A multimeter under $100 is the meter most electricians actually carry. The $400 bench-grade units stay on the truck or in the shop; the sub-$100 meter is the one that rides in the pouch, gets dropped, and reads a few hundred circuits a week. The good news is that the floor for a usable meter has risen sharply. The bad news is that the marketing has gotten loud enough that it is hard to tell which specs matter and which are filler. This is a field-oriented guide to spending that hundred dollars well.
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What actually matters under $100
Three specifications separate a meter you trust from a meter you replace in six months:
- CAT rating and voltage. For residential and light commercial work, CAT III 600 V is the practical minimum. CAT III 600 V / CAT IV 300 V covers service-entrance work where you are upstream of the main. Do not buy a CAT II meter for panel work no matter how good the price looks – the rating describes how the meter fails under a transient, and that is a safety spec, not a feature.
- True RMS. Average-responding meters read correctly only on a clean sine wave. The moment you measure a VFD, a dimmer, an LED driver, or any non-linear load, an average-responding meter reads low – sometimes 10 to 40 percent low. If any part of your work touches drives or electronic loads, true RMS is not optional.
- Resolution and count. A 6000-count display resolves low readings far better than a 2000-count display. On a 3 A branch circuit, the difference between 2.9 and 3.1 A is the difference between a meter that helps you troubleshoot and one that just confirms power is present.
Everything else is convenience
Auto-ranging, a backlight, a non-contact voltage mode, a flashlight, low-impedance (LoZ) mode to kill ghost voltage, min/max capture – these are all genuinely useful, but they are tie-breakers, not deciding factors. Buy the CAT rating, true RMS, and resolution first; then pick the convenience features that match how you work. An electrician doing a lot of troubleshooting will value min/max and LoZ. A residential service tech will value a built-in NCVT and a bright display for dim basements.
The brands worth your money
Fluke, Klein, and Brymen dominate this price band for a reason: their meters survive drops, their leads do not crack at the strain relief in the first winter, and their fuse protection is real rather than nominal. Fluke’s entry meters carry the strongest service reputation and resale value. Klein’s meters frequently bundle a built-in NCVT and tend to undercut Fluke by ten or twenty dollars. Brymen is the quiet favorite of people who read datasheets – often the best raw specification per dollar, sometimes sold under other brand names.
The trap to avoid is the no-name meter with an impossible spec sheet: CAT IV 1000 V, 0.5 percent accuracy, true RMS, for $25. The category rating on those is frequently aspirational rather than tested, and the fuse is often a glass automotive fuse that will not interrupt a fault. The few dollars saved are not worth standing in front of a panel trusting a number from a meter that has never been independently verified.
Our picks under $100 (June 2026 street prices)
Prices move. These are typical Amazon and supply-house numbers as of mid-2026, not MSRP. One note up front: the Fluke 117 and 115 – long the default recommendations in this band – now list well above $200 on Amazon. If you want Fluke branding on a real budget, the 15B+ is the honest entry point today.
Klein MM420 (~$65) – best value
The Klein MM420 is the successor to the old MM600 line and the pick I would hand a new apprentice. CAT III 600 V, true RMS, auto-ranging, 600 V AC/DC voltage, 10 A current, and a readable backlight. It does not have LoZ mode or a built-in NCVT, but it hits the safety and accuracy floor at roughly half the ceiling of this budget. For residential service and light commercial troubleshooting where you already carry a separate NCVT pen, this is the meter that covers 90 percent of what you measure.
Klein MM720 (~$100) – best Klein overall
The Klein MM720 sits right at the $100 line and adds what the MM420 skips: low-impedance (LoZ) mode for chasing ghost voltage, a faster continuity buzzer, and a higher 1000 V rating on the voltage ranges. If your work includes shared neutrals, dim basements, or any troubleshooting where phantom voltage wastes an hour, the LoZ mode alone justifies the step up. This is the Klein I would buy for myself if the budget stopped at a hundred.
Fluke 15B+ (~$117) – budget Fluke
The Fluke 15B+ is technically a few dollars over $100 on Amazon, but it is the realistic Fluke entry in 2026 now that the 115 and 117 have climbed past $200. True RMS, CAT III 600 V, 4000-count display, and the Fluke fuse protection and service network. You lose the 117’s built-in NCVT and LoZ, but you keep the brand reputation and build quality that still matters when a reading decides whether you re-pull a circuit. Pair it with a dedicated voltage tester if you need NCVT in the same pocket.
Brymen BM235 (~$80-95) – best specs per dollar
The Brymen BM235 (also sold direct from Brymen and through the EEVblog store) is the datasheet crowd’s favorite in this price band: 6000-count display, true RMS, CAT IV 300 V / CAT III 600 V, contactless voltage detection, and a continuity buzzer fast enough to use in a noisy panel. Amazon stock on the EEVblog listing comes and goes; if it is unavailable, buy from Brymen directly at roughly the same price. Availability is the only reason this is not the default first pick – when you can get one, the raw specification per dollar is hard to beat.
Pair it with clamp and NCV tools
A pouch multimeter handles voltage, resistance, and continuity; daily current work usually rides on a clamp meter. We compared the two common $70 clamps in Fluke 323 vs Klein CL390 – equivalent measurement performance, decision comes down to whether the Klein’s built-in NCVT fits your workflow. For the always-in-pocket hot/cold check, see our Klein NCVT-5 vs Fluke T6-1000 write-up: they solve different problems and layer well with any of the meters above.
Match the meter to the work
If you do mostly residential service and troubleshooting, prioritize a bright display, a built-in NCVT, and LoZ mode to chase down ghost voltage on shared neutrals. If you do light commercial with any motor or drive content, prioritize true RMS and a higher count. If you are buying your first meter and want one tool that does most things acceptably, a CAT III 600 V, 6000-count, true-RMS auto-ranging meter from one of the three brands above will cover the overwhelming majority of what you measure.
Pair it with the right calculations
A meter tells you what a circuit is doing now; the design side tells you what it should be doing. When you are sizing a conductor or checking whether a long run is going to sag under load, run the numbers before you pull wire. Our free voltage drop calculator and wire size calculator handle the common cases in a few seconds, so the meter reading you take in the field matches the design you expected.
Bottom line
Under $100 in 2026, the short list is: Klein MM420 if you want the most meter for the least money, Klein MM720 if LoZ mode matters to your troubleshooting, Fluke 15B+ if you want Fluke service reputation on a stretched budget, and Brymen BM235 if you care about count and CAT rating more than brand recognition. Buy CAT III 600 V minimum, insist on true RMS if you touch any electronic load, and spend whatever is left on good leads and a case. The meter is the tool you bet your readings on every day – it is worth getting right.
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