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Best Multimeter of 2021

Credit: David Wise
By David Wise ⋅ Senior Review Editor  ⋅  Dec 15, 2020
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We researched over 30 different digital multimeters, then bought the 10 best products available in 2021 to test head-to-head. We compared the measurement capabilities of these products side-by-side, trying them out with everything from delicate digital circuits to typical residential electronics. We rated and scored their convenience and ease of operation, included probes, and AC & DC measurement functions, as well as any other testing capabilities they included. Check out the full review to find out which meter is the best for beginners, which is the best for high-end applications, and which one has the most functionality and features for testing electrical systems.

1

Best Overall Multimeter


AstroAI 6000


AstroAI 6000
Editors' Choice Award
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$35.99
(5% off)
at Amazon
See It

Auto-Ranging?: Yes | True RMS?: Yes
Very easy to use
Tons of measurement capabilities
Large display
The kickstand is hard to open
Universal socket for component measurements is finicky

Claiming the top spot overall, the AstroAI 6000 is our all-around favorite multimeter. Compared to some of the other first-rate products, this top-tier multimeter combines an impressive set of both AC and DC measurement capabilities in a package that is both convenient and relatively inexpensive. This meter has plenty of other functionality and allows you to check components like transistors, diodes, resistors, and capacitors, as well as measure temperatures using the thermocouple. For DIY electronic projects, household wiring repair, or working on 12/24 VDC systems found on cars and boats, this meter is an excellent option.

However, we did find a few flaws with this product. The magnetic hanger isn't super strong, so there is a possibility that you could accidentally knock it off if you are using it to hold the meter. We also noticed that the magnet tends to collect metal flakes, component leads, and other loose metallic objects. The kickstand can be tricky to unfold, and it is very hard to pull the probe covers off if you need longer ones. It has a greater tolerance than some other products out there, but this shouldn't matter much unless you are doing very high-end technical work. All in all, for most people, the AstroAI 6000 is an exceptional digital multimeter. It's a great tool for troubleshooting all sorts of circuits and wiring and is a product that we highly recommend.

Using a meter to measure a resistance can be a bit more foolproof...
Using a meter to measure a resistance can be a bit more foolproof than relying on the color codes for beginners -- and if you have a hard time actually seeing the colors.
Credit: David Wise

2

Another Excellent Option


KAIWEETS TRMS 6000 HT118A


KAIWEETS TRMS 6000 HT118A
Editors' Choice Award
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$29.70
(20% off)
at Amazon
See It

Auto-Ranging?: Yes | True RMS?: Yes
Illuminated ports to show where to connect test leads
Non-contact voltage probe
Tons of AC-specific features
The interface can be a bit more confusing

The KAIWEETS TRMS 6000 HT118A is another one of our all-time favorite multimeters. This meter is auto-ranging and has a solid set of voltage and current measurements for both DC and AC. It also can measure frequency, temperature, continuity, and resistance, along with diodes and capacitors. Even better, this multimeter has a non-contact voltage sensor and a live wire detector, both of which will illuminate the backlight orange once it registers over 80V or so, alerting you to the presence of significant amounts of AC running through the wires you're measuring. We also really like the large and very easy to read display, along with the fact that the connectors will light up to show you where to plug in the test leads, helping prevent some of the most common mistakes when using these products. On top of all that, this unit even has an integrated flashlight.

However, this meter might not be the best option if you are doing lots of projects with digital circuitry, as it lacks the ability to directly measure transistor gain. We also found the interface to be a bit confusing since it has so many features and functions. It does make it easy for beginners to use when it comes to their knowledge of electrical theory but the meter itself has a bit of a learning curve and takes a little time to figure out where all the different measurement tools are and how to use them. Them. All in all, the KAIWEETS TRMS 6000 HT118A is a fantastic meter and we readily recommend it.

We think the KAIWEETS is an excellent DMM.
We think the KAIWEETS is an excellent DMM.
Credit: David Wise

3

Best for Tight Budgets


AstroAI AM33D


AstroAI AM33D
Best Buy Award
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$11.98
(8% off)
at Amazon
See It

Auto-Ranging?: No | True RMS?: No
Low cost
Unique features
Harder to use
No auto-off

If you only have the occasional electrical project and are searching for a low-cost option to toss in your toolbox, then the AstroAI AM33D is a great option. This simple multimeter can help with troubleshooting AC and DC circuits and has the crucial audible continuity check to help you track down a broken wire or loose connection. It includes a set of simple probes and has some of the basic convenience features we want in a multimeter, like an integrated backlight and a data hold function. On top of all that, it also has a square wave generator, though most people probably aren't going to use it all that much.

Unfortunately, this meter isn't auto-ranging, which in our minds is its biggest flaw. This can make it much more difficult for beginners to use — and can even trip up some more advanced users if they aren't paying attention. We also wish the backlight was a little bit brighter and the integrated stand held the meter at a better viewing angle. Despite these flaws, this meter can get the job done at a fraction of the cost of the top-tier models and is a good choice if you infrequently use one of these tools.

The AM33D by AstroAI has a built-in square wave generator.
The AM33D by AstroAI has a built-in square wave generator.
Credit: David Wise

4

Great Value for Beginners


Crenova MS8233D


Crenova MS8233D
Best Buy Award
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$25.99
(7% off)
at Amazon
See It

Auto-Ranging?: Yes | True RMS?: No
Easy to use
Compact
Reduced measurement functions

If you are a beginner DIYer getting started with electrical projects, then we strongly recommend the Crenova MS8233D. This capable multimeter is jam-packed with functionality at a price that won't break the bank. It can measure resistance, alternating and direct current, and voltage, as well as frequency. It has a diode test and continuity check, as well as handy features like a backlight, hold, and max functions. The Crenova MS8233D includes not only the typical point probes but also a pair of alligator clip test leads and a nice storage case.

This meter does lack some of the more advanced features, like a temperature probe or a dedicated transistor test. It only has a maximum function — no minimum function. However, with great value and ease of use, we think the Crenova MS8233D more than makes up for this, making it our top recommendation to beginners or anyone shopping on a budget.

The MS8233D includes alligator clip probes, which can take the...
The MS8233D includes alligator clip probes, which can take the hassle out of measuring resistors.
Credit: David Wise

5

Best for Electricians and Advanced Users


Fluke 117 Electricians True RMS Multimeter


Fluke 117 Electricians True RMS Multimeter
Top Pick Award
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$189.98
(14% off)
at Amazon
See It

Auto-Ranging?: Yes | True RMS?: No
Allows you to take very technical measurements
An exceptional suite of AC measurement abilities
Integrated non-contact voltage probe
Expensive
No dedicated transistor sockets

If you need a highly technical meter for highly technical work, then the Fluke 117 is a fantastic option. Offering plenty of advanced features and functions, this DMM is designed with electricians in mind, especially when it comes to taking AC measurements. We love that this multimeter features an integrated non-contact AC probe and comes with a clear and easy to understand interface. This true-RMS meter also has a low-impedance input that can automatically detect the type of voltage being measured and choose the appropriate range. You can also purchase a current probe separately if you need to measure anything above 10 amps.

While the Fluke 117 has an impressive set of technical measurement functions, it's geared more towards anyone working on home — or even commercial — wiring rather than a hobbyist playing around with DC circuits. It is more expensive than an amateur might want to pay and doesn't have dedicated NPN/PNP transistor testing. All in, this is a fantastic professional-grade multimeter; it's just a bit more specialized than many people's electrical projects might require.

The Fluke 117 is a high-tech multimeter designed with electricians...
The Fluke 117 is a high-tech multimeter designed with electricians in mind.
Credit: David Wise

6

Best for Automotive Work


INNOVA 3320


INNOVA 3320
Top Pick Award
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$29.99
(14% off)
at Amazon
See It

Auto-Ranging?: Yes | True RMS?: No
Convenient to carry
Handy battery test feature
Integrated probe storage
No component test feature
Can't measure large AC currents

If you are looking for a meter for electrical work on your car or boat, then we definitely recommend the INNOVA 3320 Auto-Ranging Digital Multimeter. This meter features a handy wrist mount that makes it incredibly easy to use and convenient when working on a car or boat's electrical system. It has some built-in battery test settings for the most common battery voltages for a quick and easy visual reference. The INNOVA 3320 has an auto-ranging resistance measurement and is a Category II meter rated up to 600 VAC, which makes it more than suitable for working on typical household circuits.

However, compared to some of the other products, the INNOVA 3320 is limited when it comes to features. It doesn't have any options for testing transistors or capacitors, so there are better options out there if you are doing electrical projects on the component level. It can't measure more than 200 mA of alternating current, and the 10A direct current plug is unfused, which gives us some cause for concern. Still, the INNOVA 3320 is a fantastic choice if you are primarily looking for a multimeter to help with your work on 12 or 24 VDC electrical systems in cars, boats, or RVs — along with the occasional home outlet or switch replacement.

The wrist strap on the 3320 can be very handy when working on cars...
The wrist strap on the 3320 can be very handy when working on cars or other machinery.
Credit: David Wise

7

Best for High Current AC Applications


Etekcity MSR-C600


Etekcity MSR-C600
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$27.99
(7% off)
at Amazon
See It

Auto-Ranging?: Yes | True RMS?: No
Carrying case included
Non-contact AC measurements
Max and Hold functions are handy
No stand or probe holders
Feels more awkward to use

If you routinely measure large AC currents, then the Etekcity MSR-C600 is the multimeter for you. The key feature of this machine is the integrated non-contact current clamp, which is capable of measuring much higher AC currents than just about every other meter in this review. For the best results, you simply set the dial and then clamp it around a non-shielded single conductor, allowing you to measure higher currents without worrying about breaking the circuit or blowing a fuse.

However, the Etekcity MSR-C600's current measuring capabilities come at a bit of a cost. Its inability to measure current for DC applications and frequency, capacitance, or transistor gain, make this meter a one-hit-wonder when it comes to electrical measurements. This meter also just feels a bit more awkward to use when you aren't using the clamp probe compared to a traditional DMM. It is hard to beat when it comes to measuring large alternating currents, but it isn't the best option if you don't do this all the time or if you are just starting.

The integrated non-contact clamp is a quick and easy way to measure...
The integrated non-contact clamp is a quick and easy way to measure the amount of alternating current flowing through a wire, though its accuracy can be impacted by the number of conductors and the type of wire.
Credit: David Wise

8

Another Great Beginner Option


Neoteck NT8233D Pro


Neoteck NT8233D Pro
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$21.99
(4% off)
at Amazon
See It

Auto-Ranging?: Yes | True RMS?: No
Lots of basic functions
Awesome included probes
No integrated probe holders or case
No "Max" measurement features

The Neoteck NT8233D Pro is a very similar meter to the Crenova MS8233D, making it another excellent option for novices shopping on a budget. The Neoteck NT8233D Pro even has a capacitance measurement — something the Crenova MS8233D lacks. Inexpensive and easy to use, this meter is a great option for the DIYer just getting started, with the safety covers on the point probes as a bonus.

However, we did give the Crenova MS8233D a slight edge over the Neoteck NT8233D Pro for a few reasons. The Neoteck NT8233D doesn't include a case or an integrated probe holder, which can make it a bit difficult to keep organized. It also doesn't have a "Max" function, which we found to be just a bit more useful to beginners than a capacitance measurement. If you are just starting, it's worth considering, especially if you happen to find it on sale for a better price than the Crenova MS8233D.

The continuity function is key for chasing down issues in PCBs...
The continuity function is key for chasing down issues in PCBs, letting you know what is electrically connected with an audible beep.
Credit: David Wise

9

Inexpensive Semiconductor Testing


WeePro Vpro850L


WeePro Vpro850L
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$10.18
(7% off)
at Amazon
See It

Auto-Ranging?: No | True RMS?: No
Rubberized guard for drop protection
Integrated transistor testing
Higher than the average mA measurement range
Unintuitive interface
Harder to use

The WeePro Vpro850L is a rather run-of-the-mill product. We like the integrated kickstand and the rugged protector, as well as its bright backlight. Weighing approximately 6 ounces, the Vpro850L is a compact digital multimeter (DMM) that can easily fit in most toolboxes. It has plenty of DC voltage and current measurement capabilities, along with component test features. There are dedicated functions to test diodes and transistors, as well as a "Hold" feature to save your data.

However, because the WeePro Vpro850L doesn't automatically detect and set the measurement range for current, voltage, or resistance, it can be a bit more difficult to use than some of the other products. This DMM also can't measure alternating current levels at all and won't automatically shut off if you leave it on, which always seems to lead to a dead battery at the most inopportune times.

It can be a little trickier to measure resistance with the Vpro850L...
It can be a little trickier to measure resistance with the Vpro850L since you need to select the appropriate range -- the meter doesn't do it automatically for you.
Credit: David Wise

10

A Bare-Bones Budget Alternative


Etekcity MSR-R500


Etekcity MSR-R500
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$12.49
at Amazon
See It

Auto-Ranging?: No | True RMS?: No
A decent set of features
Inexpensive
More difficult to operate
Lacks automatic shut-off

This basic model has a bare-bones set of functions that can help with simple electrical systems and that's about it. We like that it's one of the cheapest models of the group and includes some acceptable probes and a molded boot around the meter to give it some impact protection. This model has a backlight and a data hold feature as well.

The interface is equally hard to use since you need to select the correct range and interpret the results correctly. Auto-ranging meters do this for you, making them a much better option for someone just starting. The Etekcity MSR-R500's main selling point is that it's fairly affordable, though, again, a much better meter can be had for just a bit more. However, this could be a good option if you are searching for a secondary meter to throw in a toolbox or just want to have an extra around.

Checking the forward voltage drop of a typical diode in a breadboard...
Checking the forward voltage drop of a typical diode in a breadboard using the MSR-R500.
Credit: David Wise

A Word of Warning
Working with high voltages, currents, and electrical systems, in general, can be an extremely risky and dangerous task. Using a multimeter is no substitute for proper training and knowledge. If you feel unsure or confused about what you are doing, then you most likely shouldn't be doing it. At some point, you do just need to leave it to the licensed professionals.

Why You Should Trust Us


Our expert multimeter tester, David Wise, has well over a decade of experience designing electronic circuits and building electromechanical systems. Graduating with a Bachelor of Science in Mechanical and Ocean Engineering from MIT in 2014, he worked on the electronics systems for deepwater ocean gliders, electric Formula-style race cars, and developed hands-on electronics curriculum for local schools. He is a published author in the American Society of Mechanical Engineers' Young Engineers Paper contest for his work on the design and prototype of an electromagnetic gallium pump and has a wide background in both digital and power electronics. Additionally, he is an avid DIYer, undertaking plenty of electrical projects and improvements on his own home — with only the occasional unexpected spark. He has spent more hours than he would like debugging and testing all of those systems with practically every type of multimeter imaginable, bringing his extensive experience to this review.

We spent dozens of hours comparing and scoring these products side-by-side, completing a handful of electrical projects along the way. We checked the resistance, capacitance, and gain of a plethora of electrical components, as well as the voltage of just about every outlet and battery we could find. This also gave us a fairly good idea — and some strong opinions — about the included probes and the overall ease of use and user-friendliness of each meter.

While all of these products have the same basic features, there are...
The AstroAI DM6000AR includes a K-type thermocouple probe that can...
Using the diode check function on the Etekcity Measure UP.

Analysis and Test Results


To determine which multimeter is the best of the best, we tested them head-to-head to score all of their different functions and rank these machines. We compared their electrical testing abilities, ease of use and operation, and included probes, with our side-by-side analysis in the following sections. We have divided electrical measurement capabilities into DC and AC voltage and current, as well as other functions for ease of understanding. While there are a few features that can fall into multiple categories, we've left these in the most commonly used category for clarity.

DC Voltage and Current


In this metric, we consider the Direct Current (DC) measurement abilities of each device. Most electronics hobbyists get started with low-voltage DC circuits, given their less risky and much more forgiving nature. We rated and compared the DC voltage and current measuring abilities of each product, as well as any other unique DC-specific features for each model.

The AstroAI 6000, the KAIWEETS TRMS 6000 HT118A, the Crenova MS8233D, the Etekcity MSR-C600, and the Fluke 117 all impressed us in this regard. When it comes to taking a DC voltage, these four meters are all auto-ranging, making them very easy to use.

However, the KAIWEETS does have a separate setting for measuring millivolts and milliamps, so it is slightly less auto-ranging than the others. The Crenova MS8233D, the KAIWEETS HT118A, and the Fluke 117 also are both very accurate, having a listed tolerance for most ranges of plus/minus 0.5%.

While this product is mainly useful for measuring large AC currents...
While this product is mainly useful for measuring large AC currents, you can still measure other things, like the voltage of an SLA battery.
Credit: David Wise

However, when measuring current with the AstroAI 6000, the KAIWEETS HT118A, and the Crenova MS8233D, you do need to set the correct range — something you don't need to do with the Fluke 117, which can automatically select the range for you.

Also standing out in this metric with its series of common sized built-in battery load testers is the INNOVA 3320. One of three LEDs will light up to let you know if the battery is charged, on the border, or is depleted.

The Innova 3320 gives you a visual LED indicator for the amount of...
The Innova 3320 gives you a visual LED indicator for the amount of charge in a few common batteries.
Credit: David Wise

The AstroAI AM33D is rated to measure up to 500V with a Category II insulation rating. However, it isn't auto-ranging, so you need to set the appropriate scale for your measurement, choosing between 0-200mV, 0-2000mV, 0-20V, 0-200V, 0-500V, with the precision (number of decimal places) of each measurement changing for each range.

AC Voltage and Current


Next, we compared how these products did with Alternating Current (AC) circuits. Two products immediately stand out when it comes to measuring AC voltage and current: the Fluke 117 and the Etekcity MSR-C600. The Fluke 117 is a true electrician's True-RMS multimeter, featuring a series of advanced AC measurement tools, like an Auto-volt feature with a low-impedance input and a non-contact voltage sensor. It is auto-ranging for alternating current and voltage and is also able to measure frequency.

The non-contact VoltAlert sensor is a quick and easy way to check if...
The non-contact VoltAlert sensor is a quick and easy way to check if there is power, though it can sometimes be fooled by shielded conductors or other circumstances, so you should always double-check before working on the circuit.
Credit: David Wise

However, when it comes to measuring large alternating currents, even the Fluke 117 is outperformed by the Etekcity MSR-C600. While the Fluke 117 can only measure up to 10 amps of current in its stock configuration, the Etekcity MSR-C600 can measure up to 400 amps using its non-contact current clamp. Even better, you don't need to break the circuit and wire the meter in series when using a non-contact clamp. This feature works best when you only measure a single, unshielded wire at a time. However, you can buy a current clamp separately for other products, like the Fluke 117 or the AstroAI 6000, if you want to measure higher currents with other products.

The KAIWEETS HT118A also deserves some praise when it comes to working with AC. This meter, like the Fluke 117, also has a non-contact voltage sensor and has a live wire detector using a single test probe, making it very handy for seeing which circuits are live — particularly if you are working in a tight spot.

The backlight turns orange whenever measuring higher voltages.
The backlight turns orange whenever measuring higher voltages.
Credit: David Wise

It is also worth noting that, like the Fluke 117, the AstroAI 6000 and the KAIWEETS HT118A are both True-RMS meters. This means that they can accurately measure complex non-sinusoidal waveforms, like those found in HVAC systems and variable motor drives.

Other Functions


While AC and DC measurement abilities are critical for any good multimeter, it is important not to disregard all of the other measuring capabilities these products have. All of the models that we tested have a diode, resistance, and audible continuity check, with a few meters going even further. The AstroAI 6000 can also measure capacitance, transistor gain, duty cycle, and temperature using its K-type thermocouple. The KAIWEETS HT118A also can measure temperature with a similar thermocouple.

The thermocouple, probes, and universal socket for component testing...
The thermocouple, probes, and universal socket for component testing all are included with the AstroAI.
Credit: David Wise

The Neoteck NT8233D, Fluke 117, the KAIWEETS HT118A, and the Crenova MS8233D can all measure capacitance as well. The WeePro Vpro850L or the AstroAI 6000 can be useful with their NPN/PNP transistor gain functions if you are doing lots of circuits with surplus transistors. While this isn't the most useful, it can be handy for getting a rough idea of the DC gain when using surplus parts or other semiconductors that you can't locate the datasheet for. We did think the universal socket on the AstroAI 6000 is a little more finicky — and something that we would easily lose — than the integrated sockets on the WeePro Vpro850L.

The Vpro850L can measure the gain (hFe) on both NPN and PNP...
The Vpro850L can measure the gain (hFe) on both NPN and PNP transistors.
Credit: David Wise

While this isn't necessarily a measurement function, both the AstroAI AM33D and the Etekcity MSR-R500 have a dedicated square wave output, which is useful for testing amplifier circuits. These also have a diode check — handy if you are working with LEDs.

The square wave function can be very useful for testing...
The square wave function can be very useful for testing oscilloscopes or amplifiers.
Credit: David Wise

Ease of Use


After the electrical measurement tests, we rated and scored how easy it is to use each of these devices. We considered how simple or challenging it is to set the range, if it comes with a "Max", "Min", or "Hold" option, whether or not there is a backlight, the quality of the kickstand, and the overall user interface. When it comes to setting the range, you can't beat any of the auto-ranging meters, like the AstroAI 6000, the Crenova MS8233D, the Fluke 117, the KAIWEETS HT118A, or the Neoteck NT8233D Pro. The Etekcity MSR-C600 is also auto-ranging.

"Hold", "Min", "Max" functions are also quite handy when diagnosing circuits, something the Fluke 117, the KAIWEETS HT118A, and the AstroAI 6000 all have. Except for the INNOVA 3320 and the Etekcity MSR-C600, most of the products have a backlight.

While it's not recommended to work on electrical projects without...
While it's not recommended to work on electrical projects without proper lighting, the integrated backlight can make it easier if you absolutely have to.
Credit: David Wise

The KAIWEETS HT118A has a particularly easy-to-read screen and has a backlight that will change colors depending on your measured results. Additionally, it also has a built-in flashlight and a light will illuminate around the ports you should be connecting your test leads to whenever you change the measurement type, helping prevent you from plugging a lead into the wrong port.

Lights show you where to plug in the test leads.
Lights show you where to plug in the test leads.
Credit: David Wise

While most of these devices also include a kickstand, we like that the AstroAI 6000 has a magnetic hanging strap as well. The Fluke 117 has this too, but is sold separately. However, we do like the integrated probe holders on the Fluke 117, which keeps the test leads nice and organized.

The DM6000AR has both a kickstand and a magnetic hanging attachment.
The DM6000AR has both a kickstand and a magnetic hanging attachment.
Credit: David Wise

Included Probes


Finally, we assessed the quality of the included probes. Since you can always get higher quality probes separately, this isn't a huge differentiator. However, there are a few standouts that are worth mentioning. We liked the safety covers that come with some probes, such as the ones on the Fluke 117 and the Neoteck NT8233D Pro.

You can remove the insulating cover to expose more of the probe if...
You can remove the insulating cover to expose more of the probe if necessary.
Credit: David Wise

These let you change the amount of conductive surface exposed to match the application. We also like that the Neoteck NT8233D Pro and the Crenova MS8233D include the typical point probes as well as a pair of alligator clip probes.

Checking the value of an electrolytic capacitor with the Neoteck's...
Checking the value of an electrolytic capacitor with the Neoteck's included alligator clip probes is a breeze.
Credit: David Wise

These can be exceptionally convenient for measuring components or other circuits and give you a reliable way to get a good connection without holding the probes in position, freeing up your hands, and reducing the likelihood of an intermittent connection.

Regardless of what type of electrical project you have in mind...
Regardless of what type of electrical project you have in mind, there's the perfect meter for you!
Credit: David Wise

Conclusion


We hope that this review has helped you narrow down your options for your next digital multimeter. Working on electrical circuits and systems can be extremely dangerous and should only be done if you have the proper knowledge and training. With that in mind, stay safe, and best of luck on your next DIY project.

David Wise