Best Digital Multimeter 2026: 10 Ranked, and the Number That Doesn't Measure Anything

At £39.99 this is the most expensive meter in the line-up, and the only one claiming both CAT III 1000V and CAT IV 600V. Crucially, it also reads AC current as well as DC — something the £11.99 meter at the bottom of this list cannot do. A digital multimeter without AC current is fine for batteries and continuity, and not much else.

The 6000-count resolution, 2.9in backlit LCD, dual display with bar graph and the LED lights that show which jack to use are all built for speed. It measures AC/DC voltage, AC/DC current, resistance, continuity, frequency, capacitance, duty cycle, diodes and temperature, with non-contact voltage detection and a live-wire mode that turns the screen red. It weighs 550g and measures 20.4 x 13 x 6.2cm, so it lives in a toolbox rather than a pocket. KAIWEETS offers 36 months of after-sale service and lifetime technical support.

That said, the same sheet lists an upper temperature rating of 250°C, below the figures printed on cheaper listings here. Anyone who mainly checks batteries, sockets and fuses is paying for ranges they will never use. Buy this if you want the highest safety category and every range on one dial; skip it if you want something light.

Meanwhile, £21.92 buys 6000 counts, true RMS, AC/DC current, capacitance, frequency, duty cycle and temperature, plus 19,497 ratings at 4.6 — the second-largest review base here. On paper that is the widest function list per pound in the top half of the ten.

In practice the extras are the ones that matter at the consumer unit: data hold, a backlit LCD, a kickstand and auto shut-off, plus two ceramic fuses rated F400mA/600V and F10A/600V. The 9V battery, test leads and a multi-function socket are in the box, and the support team is US-based and quotes a 24-hour reply. It weighs 492g, the second-heaviest here.

The catch is that its own specification contradicts its title. The name says CAT III 600V; the sheet gives a maximum operating voltage of 1000V. The same sheet lists a lower temperature rating of 40°C and an upper of 1370°C. As with every digital multimeter listing here, read the table rather than the headline.

Third at £17.99, and the value pick of the three AstroAI meters here. It claims the same true RMS, the same auto-ranging and the same AC/DC current and temperature coverage as the £21.92 model above, in a 145g body.

The headline difference is resolution: 4000 counts against 6000. It still covers AC/DC voltage, AC/DC current, resistance, continuity, capacitance, frequency, temperature and diodes, with data hold, a backlit LCD, a kickstand and a low-battery indicator. Two fuses rated F500mA/600V and F10A/600V, overload protection on all ranges, CE, RoHS and UL marks, and a three-year warranty from AstroAI. It measures 15.5 x 10.8 x 3.9cm.

By contrast with the marketing, the bullets promise temperature measurement while the specification gives an upper temperature rating of 40°C. That is the clearest contradiction in the category. It also carries the fewest reviews of the three AstroAI models — 8,850 against 55,860 for the cheap one. Skip it if you need 6000-count resolution.

Fourth, and the meter most people will recognise: 13,613 ratings at 4.6, the third-largest base here, at £16.99. It is also the lightest of the ten, at 100g, and runs on two AAA batteries.

The idea is simplicity. Smart Auto Mode switches between AC/DC voltage, resistance and continuity with no dial work, and non-contact voltage detection gives an audible and visual alarm without touching a conductor. Data hold, automatic shutdown, a backlit screen, a torch, a storage bag and a user manual are all included. Safety is stated as CAT II 600V with CE and RoHS.

That said, the function list stops at voltage, resistance and continuity — no current, no capacitance, no frequency and no temperature. For a multimeter for home electrical testing around sockets, switches and fuses, that is enough. If you need to measure current, or you work near the consumer unit, note that CAT II is the lowest safety category here and you should look further up the list. Its 4000 counts are also below the three meters above it.

Fifth because of a price that does not match its resolution. At £19.99 this is a 2000-count meter — the same count as the £11.99 model at the bottom — and it costs more than the £17.99 AstroAI above it.

What you do get is range: DC and AC voltage and current, resistance, capacitance, frequency, duty cycle, continuity, diode, temperature, live wire and NCV, with DC voltage accuracy stated at ±0.5%. It switches between manual and automatic ranging, holds data, shuts down after 15 minutes idle and carries a torch. CAT III 600V, CE and RoHS, with overload and short-circuit protection. The box includes a temperature probe and a 10A alligator clip. It weighs 195g and measures 14 x 7.2 x 3.7cm.

Worth noting: its upper temperature rating is listed as 1000°C. The £11.99 meter says 250°C; the £17.99 AstroAI says 40°C. Three meters, three numbers for the same field, which is exactly why none of them can be compared directly. For a multimeter for beginners the function list is generous, but 2000 counts is still 2000 counts.

Sixth, and the clearest case of a listing arguing with itself. The item highlight calls it an auto ranging multimeter; the second bullet and the style name, '6000Counts 20A-Manual Range', describe manual range selection. Both cannot be right, so check before you buy.

The rest of the spec is solid for the money: 6000 counts, 750V AC and 1000V DC, 20A AC/DC current, resistance, capacitance, frequency, duty cycle, temperature, continuity, NCV, diode, hFE and an infrared test. Two spare fuses sit in the battery compartment, with two spare fuse access points. A magnetic back, fold-out stand, alligator clips, temperature probe, screwdrivers and a cloth bag are included, and Proster gives 18 months of warranty. It weighs 380g.

The catch is that manual ranging means you select the measurement interval yourself for every reading — accurate and repeatable, slower in a hurry. At £27.98 it costs more than both AstroAI meters above it, and its 1,750 ratings are among the smallest samples in the roundup. Skip it if you want point-and-read. If you want an electrical tester that behaves identically every time on a bench, this is the one.

Seventh on price and second on stars: £33.97 for a 6000-count meter rated 4.7, the joint-highest score in the roundup, from 664 ratings. It is also the heaviest meter here at 820g.

The kit is the reason to look at it. Crenova ships the meter with a K-type thermocouple, a pair of probe test leads, a pair of alligator clip leads, two AA batteries, a carrying box and a manual. The meter itself covers AC/DC current, AC/DC voltage, resistance, frequency, capacitance, continuity, diode, transistor hFE and temperature, with NCV and a buzzer. CAT III rated, double-fused, with a silicone cover and a low-battery indicator.

As a result, this is a bench or toolbox meter, not a pocket one. It is sold on its title as a true rms multimeter, and 664 ratings is a small sample next to a digital multimeter carrying 22,442. The 4.7 is genuine, but it rests on thinner evidence. Skip it if you want light and cheap; buy it if you want the accessories included.

Eighth at £23.02, and the only meter here with an IP67 rating, alongside CAT IV 600V, true RMS and 6000 counts. It weighs 255g and measures 15 x 4.8 x 7cm.

Even so, the details are good: a low-pass filter (VFD) for variable-frequency drives, max/min, relative and data hold modes, a measurement-saving function and a built-in thermometer with a Type K probe. The box contains test leads, a 9V battery, a carrying case, the Type K temperature probe, a waterproof plug for the jack and a user manual. CE, FCC and RoHS marked.

The odd part is that the description limits itself to voltage and frequency measurements. No current, no resistance, no continuity and no capacitance is claimed anywhere in the bullets. A 6000-count true RMS meter with a CAT IV rating normally implies more. If you need to measure current, buy one that says so. This is the smallest review sample in the roundup at 398, and it costs £1.10 more than the digital multimeter sitting second on this list.

Ninth because it is a different tool. The only clamp meter here, it reads up to 600A AC and DC through a 25mm jaw and is rated 4.4 from 405 ratings — the lowest score in the roundup, and the only one below 4.6. Its rating breakdown runs 66% at five stars and 4% at one star, so more than one buyer in twenty scored it one or two.

In theory the jaw is the selling point: no breaking the circuit, no live contact. It covers AC/DC current to 600A, AC/DC voltage to 600V, resistance to 60MΩ, capacitance to 6mF and frequency to 10MHz, plus duty cycle, continuity, diode, inrush current, a LowZ mode for ghost voltage and a VFC filter for variable-frequency drives. Temperature runs from -4°F to 1832°F with the supplied K-type probe. CAT III 600V, IEC61010 and double insulation, and the pouch, leads, alligator clips and thermocouple are all in the box. It weighs 590g.

Two caveats. Its minimum operating voltage is listed as 48V AC, and NCV detection starts at the same 48V — so it will not pick up lower-voltage live wires. And the jaw measures current only; voltage and resistance still need the test leads. If you mainly check sockets and batteries, a cheaper handheld meter from this list will do the job.