10 Best Multimeters 2026 in the United States

The Klein Tools MM420 is a reliable digital multimeter designed for users who need accurate and versatile electrical measurements. It measures AC/DC voltage up to 600 volts and current up to 10 amps, making it suitable for most household, HVAC, and light industrial tasks. The 50 megaohms resistance range covers common testing needs. Its True RMS technology ensures precise readings even with complex signals, and auto-ranging simplifies use by automatically selecting the correct measurement scale. The meter includes safety features like lead-alert LEDs to confirm proper test lead connections, which helps prevent errors and enhances user safety. The device meets CAT III and CAT IV safety ratings, indicating it is safe for use in tighter electrical environments like residential and commercial settings.

Additional functions such as continuity, temperature, capacitance, frequency, and diode testing add useful flexibility. The backlit LCD screen improves visibility in dim conditions, and physical design elements like a kickstand, test lead holders, and compatibility with magnetic hangers make it convenient to use hands-free. It’s also built to handle drops from up to 2 meters, showing good durability.

The product runs on AAA batteries which may require replacement more often than rechargeable options, and while it covers many features, it might not satisfy users needing advanced industrial-level specs or very high-precision lab measurements. The MM420 serves as a solid choice for electricians, HVAC technicians, and DIY enthusiasts who want a dependable, easy-to-use multimeter with a useful range of functions and strong safety features.

The Fluke 117/323 Kit is designed for both residential and commercial electricians, making it a solid choice for anyone needing reliable electrical measurements. This combo includes a multimeter and a clamp meter, offering versatility for various tasks. The 117 multimeter provides true RMS measurements, which is essential for accurate readings on non-linear loads, and it also features low input impedance to reduce false readings from ghost voltage. It measures AC and DC voltage and current, making it comprehensive for electrical diagnostics.

The 323 clamp meter complements the multimeter well, with the ability to measure up to 400 A of AC current and 600 VAC and DC voltage, which should satisfy the needs of most electricians. Both tools have excellent safety ratings, ensuring use is safe even in challenging environments.

On the downside, the accuracy rating of 0.5% can be a bit limiting for precision work, especially in situations where high accuracy is critical. Additionally, its reliance on 9V batteries may necessitate regular replacements, and while batteries are included, the ongoing cost could be a minor inconvenience. The combination kit is slightly heavier at just under 2 pounds, which may be a consideration for users who need to carry it around frequently.

The Fluke 323 Clamp Meter is designed with both commercial and residential electricians in mind. It excels in measuring AC current up to 400 amps and AC/DC voltage up to 600 volts, making it a practical choice for various electrical tasks. One of its strengths is the true RMS sensing, which ensures accurate readings for both linear and non-linear loads—even with complicated waveforms. This feature is particularly beneficial in today's diverse electrical environments.

The clamp meter's jaw opening allows it to measure current in a conductor up to 30 millimeters without the need to break the circuit, which adds convenience and safety during measurements. It also includes an audible continuity sensor, which is helpful for quickly determining if a circuit is conductive.

In terms of safety, the Fluke 323 meets IEC safety standard 61010 1, and its CAT IV and CAT III ratings provide confidence when working in various environments. However, it does not measure DC current, which could limit its usability for some users who need to work with DC systems. The resistance measurement is limited to 4 kilo ohms, which is adequate for most residential applications, but some professional electricians may require a higher range. The meter is lightweight at 200 grams and comes with a soft carrying case, enhancing its portability.

The Fluke 323 is a solid option for electricians and DIY enthusiasts; those needing to measure DC current or more extensive resistance ranges should explore other models. For general AC measurements and residential projects, it stands out as a reliable tool with good accuracy and ease of use.