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 17B+ Digital Multimeter is designed for a broad range of electrical applications, which makes it quite versatile. One of its major strengths lies in its accuracy and range, with the ability to measure AC/DC voltage up to 1000V and current up to 10A. This makes it suitable for both household and industrial use. Additionally, it covers key measurements such as resistance, continuity, capacitance, diode testing, and temperature, offering a comprehensive toolkit for troubleshooting various electrical issues.

The inclusion of a type K thermocouple for temperature measurement up to 400C is a notable feature for those working with heating and cooling systems. The CAT III 600V safety rating is a critical safety feature, ensuring protection while working on electrical systems in different environments. Its input impedance is designed to give accurate readings without affecting the circuit, which is important for precise measurements.

There are a few drawbacks. The product's weight (450 grams) might be on the heavier side for some users who prefer lighter tools for prolonged use. The battery-powered nature of the multimeter means that ensuring you have spare batteries is crucial to avoid downtime. Additionally, some users may find the lack of advanced features like Bluetooth connectivity or data logging a limitation, especially for more complex tasks requiring detailed records over time. Despite these minor drawbacks, the Fluke 17B+ stands out as a reliable, accurate, and safe tool for both professionals and DIY enthusiasts needing a robust multimeter for various electrical applications.

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.