Best Multimeters of 2026
Finding a reliable multimeter is essential for diagnosing electrical faults, testing circuits, and ensuring safety. We have analyzed specifications, owner reviews, and brand reliability to bring you the top models for home and professional use.
Quick answer
The Fluke 117 is the best overall multimeter for electricians due to its True-RMS accuracy and safety rating. For DIYers, the Klein Tools MM400 offers the best balance of features and value, while the Milwaukee 2217-20 is the top choice for job site durability.
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Research updated June 2026.
Fluke 117
Industry-standard True-RMS meter trusted by professionals for accuracy and safety.
| Product | Best For | Display Counts | Rating | Price |
|---|---|---|---|---|
| Fluke 117 | Professional Electricians | 6000 | 4.8/5 | Premium |
| Klein Tools MM400 | DIY & Homeowners | 4000 | 4.6/5 | Mid-Range |
| Milwaukee 2217-20 | Job Site Durability | 6000 | 4.5/5 | Mid-Range |
| Bosch GLM 50 C | Auto-Ranging & Features | 4000 | 4.4/5 | Budget |
| DeWalt DWM120K | Basic Electrical Work | 2000 | 4.3/5 | Budget |
Fluke 117
Best OverallPros
- Excellent accuracy with True-RMS
- Built-in non-contact voltage detection
- Rugged build with holster
Cons
- Higher price point
- No low-impedance mode
The Fluke 117 is the gold standard for electricians. It features a 6000-count display with True-RMS for accurate readings on non-linear loads. Owner reviews consistently highlight its reliability and the clear, backlit screen.
Safety is paramount with a CAT III 600V rating and built-in VoltAlert technology for non-contact voltage detection. While it is the most expensive option here, its build quality and accuracy make it a long-term investment for serious users.
Klein Tools MM400
Best for DIYPros
- Great value for the features
- Includes temperature and capacitance
- Easy-to-use interface
Cons
- Lead quality could be better
- Not as rugged as Fluke
The Klein Tools MM400 is a feature-packed multimeter ideal for homeowners and DIY enthusiasts. It offers True-RMS, a 4000-count display, and measures AC/DC voltage, current, resistance, capacitance, frequency, and temperature.
Owner reviews praise its clear display and affordable price point. It is a versatile tool for troubleshooting appliances, automotive work, and basic electrical projects. The included thermocouple is a nice bonus for HVAC checks.
Milwaukee 2217-20
Best for Job SitesPros
- Rugged overmold construction
- Integrated flashlight
- Works with Milwaukee ecosystem
Cons
- Battery not included
- Higher price than Klein
The Milwaukee 2217-20 is built for tough job sites. Its overmold housing protects against drops up to 10 feet, and the integrated LED flashlight is useful for working in dark panels. It features a 6000-count display with True-RMS.
Owner reviews highlight its durability and easy-to-read display. It is part of the Milwaukee tool system, which is a plus for users already invested in the brand. The auto-ranging function works smoothly, making it a fast tool for professional electricians.
Bosch GLM 50 C
Best Auto-RangingPros
- Very affordable
- Compact and lightweight
- Good for basic tasks
Cons
- No True-RMS
- Lower display count
The Bosch GLM 50 C is a budget-friendly option that is perfect for basic electrical checks. It offers auto-ranging on a 4000-count display and measures AC/DC voltage up to 600V. It is very compact and easy to store in a tool bag.
Owner reviews note it is excellent for checking outlet voltage and continuity. It lacks True-RMS, so it is not suitable for sensitive electronics, but for general household use, it is a reliable and inexpensive tool from a trusted brand.
DeWalt DWM120K
Best BudgetPros
- Lowest price point
- Simple manual ranging
- Good for automotive use
Cons
- No auto-ranging
- Limited features
The DeWalt DWM120K is a straightforward, manual-ranging multimeter designed for basic electrical and automotive troubleshooting. It has a 2000-count display and measures AC/DC voltage, resistance, and battery tests.
Owner reviews appreciate its low cost and simplicity. It is a great tool for users who just need to check if a wire is live or test a car battery. It is not for complex electronics, but for the price, it is a dependable backup meter.
What to check before buying a multimeter
Choosing the right multimeter depends on your skill level and the tasks you need to perform. The most important factor is safety: always look for a meter with a CAT III or CAT IV safety rating for work on mains electricity. A higher category rating means better protection against electrical surges.
For accuracy, True-RMS (Root Mean Square) is essential for measuring non-linear signals found in modern electronics and variable speed drives. A higher display count (e.g., 6000 vs 2000) provides more precise readings. Auto-ranging is a convenience feature that automatically selects the correct measurement range, which is helpful for beginners.
Mistakes to avoid when using a multimeter
A common mistake is using the wrong input jack. Always ensure the test lead is plugged into the correct port for the measurement you are taking (e.g., voltage vs. current). Plugging a lead into the 10A jack when trying to measure voltage can cause a short circuit and damage the meter.
Another error is not setting the dial to the correct function. Attempting to measure resistance on a live circuit can blow the meter's fuse. Always start with the highest range and work down to avoid overloading the meter. Finally, never use a multimeter on circuits that exceed its rated voltage category.
FAQs
What does True-RMS mean on a multimeter?
True-RMS allows the meter to accurately measure AC voltage and current on non-sinusoidal waveforms, which is common in modern electronic devices.
What is the difference between CAT III and CAT IV safety ratings?
CAT III is for distribution level circuits like fixed equipment, while CAT IV is for utility level connections. A higher rating offers better surge protection.
Can I use a multimeter to test a car battery?
Yes, set the meter to DC voltage and connect the leads to the battery terminals. A healthy battery should read around 12.6 volts when the engine is off.
What is auto-ranging on a multimeter?
Auto-ranging automatically selects the correct measurement range for the voltage or current being tested, so you do not have to manually adjust the dial.
How do I measure continuity with a multimeter?
Set the dial to the continuity symbol (usually a sound wave), and touch the probes together. The meter will beep if the circuit is complete.
Why does my multimeter show "OL"?
"OL" stands for Over Limit, meaning the reading exceeds the current range selected. Switch to a higher range to get a valid measurement.
Are cheap multimeters safe to use?
Cheap meters may lack proper fusing and safety ratings. Always choose a meter from a reputable brand with a clear CAT rating for electrical work.
What is the best multimeter for home use?
The Klein Tools MM400 is the best for home use, offering a great balance of features, accuracy, and affordability for DIY projects.
Do I need a clamp meter instead of a multimeter?
A clamp meter measures current without breaking the circuit, which is useful for high-current applications. A standard multimeter is better for voltage and resistance.
How often should I replace my multimeter?
Replace your meter if it shows signs of physical damage, fails calibration checks, or if the leads are frayed. A quality meter can last many years with proper care.
Our verdict
For professional electricians, the Fluke 117 is the best overall multimeter, offering unmatched accuracy and safety. For DIYers and homeowners, the Klein Tools MM400 provides the best value with a full feature set at a reasonable price. If job site durability is your priority, the Milwaukee 2217-20 is the toughest choice.