A multimeter helps you troubleshoot electrical systems by measuring voltage, current, resistance, continuity, and other electrical values. A quality multimeter can help you identify wiring issues, test outlets, and diagnose faulty components without having to call an electrician for every problem.
Basic handheld multimeters designed for simple household tasks typically cost less than $20, while advanced models with rugged construction, digital displays, and expanded testing capabilities can reach more than $250. To help you choose the right tool, we found the best multimeters on Amazon and compared their accuracy, features, durability, and ease of use.
Key Takeaways
- The Fluke Digital Multimeter is our top pick for its non-contact voltage detection technology and ability to automatically distinguish between alternating and direct currents without manual dial selection.
- Multimeter prices range from under $20 for basic portable models to over $250 for durable units with comprehensive features and digital displays, with most handheld versions costing between $30 and $100.
- Voltage testing capability and display type are the most important factors to consider when shopping for a multimeter.
Our Top 5 Multimeters
We researched available models on Amazon to put together the following list of top-rated multimeters:
- Fluke Digital Multimeter: Best Overall
- Klein Tools Digital Clamp Meter: Best Clamp Meter
- AstroAI Digital Multimeter: Most Versatile
- Klein Tools MM325 Multimeter: Best Value
- AstroAI Multimeter: Best Basic Digital Multimeter
Compare Our Top Multimeter Picks
To help you compare our top-ranked multimeters, we put together a side-by-side comparison with information about each model’s display, battery needs, and weight.
| Product | Display | Batteries | Weight |
|---|---|---|---|
Fluke Digital MultimeterCheck Price | Digital | AAA (x1) | 1.2 pounds |
Klein Tools Digital Clamp MeterCheck Price | Digital | AA (x3) | 0.5 pounds |
AstroAI Digital MultimeterCheck Price | Digital | Lithium (x1) | 1.3 pounds |
Klein Tools MM325 MultimeterCheck Price | Digital | AAA (x2) | 0.5 pounds |
AstroAI MultimeterCheck Price | Digital | Lithium (x1) | 0.4 pounds |
Our Reviews of the Best Multimeters
Learn more about our top multimeter picks, including the pros and cons of each model, key features, and customer experiences, below.
Best Overall
Fluke Digital Multimeter
Good for: Users seeking professional-grade readings
This high-end, compact Fluke multimeter features professional-grade reading functionality while fitting in one hand. It also uses unique technology to make measuring voltage easier. For example, you don’t have to make contact with the circuit for testing—you just have to put the multimeter nearby. We also like that this device can tell whether you’re measuring alternating current (AC) or direct current (DC), so you don’t have to select one on the dial.
Pros and Cons of Fluke Digital Multimeter
- Features a digital readout
- Runs on a single AAA battery
- Has a low input impedance to help reduce false readings
- Lacks clear instructions
- Price point is on the higher end
Key Features
- 400-hour battery life
- Automatic AC/DC selection
- Non-contact voltage detection
- True RMS for accurate readings
What People Are Saying About The Fluke Digital Multimeter
Most customers value the durability of this digital multimeter. They also say that it provides fast, consistent, and accurate readings. However, some users said the instructions were unclear, and others had difficulty reading the screen.
Best Clamp Meter
Klein Tools Digital Clamp Meter
Good for: Jobs that involve high voltage readings
We like that this high-quality multimeter, with its hands-free clamp design, measures voltage, resistance, frequency, temperature, continuity, and more. To ensure accurate readings every time, the device uses True Root Mean Squared (TRMS) measurement technology. It also includes test leads for diode testing.
Pros and Cons of Klein Tools Digital Clamp Meter
- Features a digital readout
- Weights a light 0.5 pounds
- Has an optional magnetic hanger for hands-free operation
- Requires three AA batteries
- Screen may be difficult for some to read
Key Features
- Auto-ranging TRMS for precise readings
- Built-in, non-contact voltage testing
- High-visibility, reverse-contrast display
- Measures up to 400 amps
What People Are Saying About The Klein Tools Digital Clamp Meter
Several reviewers report that this multimeter is well-made, provides accurate readings, and is user-friendly. They also mention that the clamp is durable and rugged. However, some customers said they struggle to read the measurements on the multimeter’s screen, and others say the automatic shutoff activates too quickly.
Most Versatile
AstroAI Digital Multimeter
Good for: Hands-free testing on simple projects
This digital multimeter from AstroAI uses a lithium-ion battery and features a kickstand and a magnet for hands-free testing. Our team found that the rubber sleeve reduces slippage and cushions the instrument to prevent breakage if dropped. It also features double ceramic fuses that protect against current overload.
Pros and Cons of AstroAI Digital Multimeter
- Has an easy-read digital readout
- Comes with a hanging magnet and kickstand
- Runs on a rechargeable lithium battery
- Lead tips may be too small for some common jobs
- Is heavier than some other multimeters in this review
Key Features
- Auto-ranging capabilities across all functions
- Has a kickstand and magnetic hanging loop
- Measures up to 20,000 microfarad (μF) capacitance
- TRMS functionality with a 6,000-count display
What People Are Saying About The AstroAI Digital Multimeter
Several customers say using this multimeter is intuitive despite its many features. Though most users said they have received accurate readings, the manufacturer’s customer service team was responsive and helpful for customers with defective units. On the negative side, some customers said that the leads’ tips were too small to fit into standard wall sockets, while others mentioned inaccurate leads.
Best Value
Klein Tools MM325 Multimeter
Good for: Battery testing on household products
For those who want a step up from a budget multimeter, this product features versatile functionality that measures alternating current and direct current voltage up to 600 volts (V) and 10 amperes of DC current. This multimeter also stands out for its lead-protection alert system, which indicates proper test lead placement to enhance accuracy. We also like that this device has a battery test mode.
Pros and Cons of Klein Tools MM325 Multimeter
- Can also measure frequency
- Detects continuity at less than 30 ohms
- Has a five-year warranty
- Lacks the no-contact reading functionality of other multimeters
- Some customers said the rubber coating peeled off
Key Features
- Alerts for proper test lead placement
- Backlit display for low-light work
- Can withstand 6.6-foot drops
- Measures AC/DC voltage up to 600V
What People Are Saying About The Klein Tools MM325 Multimeter
Customers who gave this multimeter good reviews generally like that it produces consistent, accurate readings, has a bright display, and features a compact yet durable design. On the other hand, some others disagreed about the display, feeling it was hard to read. One customer also mentioned having a problem with the backlight’s automatic shutoff.
Best Basic Digital Multimeter
AstroAI Multimeter
Good for: Homeowners who want an entry-level multimeter
This straightforward multimeter model from AstroAI is simple yet versatile. To make using this device easier and safer, it features a battery indicator that lets you know when it’s low on power. The multimeter also has overload protection that prevents electricity from damaging the meter or circuit or injuring the user.
Pros and Cons of AstroAI Multimeter
- Features a digital readout
- Runs on a rechargeable lithium battery
- Has a double ceramic fuse that protects from overloading
- Accuracy of readout may degrade with higher voltages
- Battery indicator may falter occasionally so you may not always know when you have low battery levels
Key Features
- 2,000-count range with a backlit display
- Has a double-fuse overload protection
- Includes data hold and auto shutoff features
- Tests voltage, current, and resistance
What People Are Saying About The AstroAI Multimeter
Most reviewers were impressed with the number of features this multimeter offers, especially given its relatively low price point. However, some users said that while the multimeter reads low voltages well, it struggles to produce accurate readings for higher voltages. Other reviewers have mentioned issues with the device’s durability, saying it doesn’t hold up well over time.
Multimeter Buying Guide
A basic multimeter, which is a type of electrical tester, is a worthy addition to any tool bag. As you start shopping for a multimeter, we recommend looking at a few different factors to find the right electrical tester for your needs. First, it’s important to understand the differences between a digital and an analog multimeter. From there, look at various sizes to decide how big a device you need.
After you’ve chosen your multimeter type and size, you can start examining specific features like voltage testing capability, resistance and continuity measuring, and battery life. Read our buying guide below for more information on how to choose the best multimeter for your home.
Pro Tip
- This Old House experts stress that electrical testers are essential safety devices, not optional accessories. They recommend carrying both a non-contact pen tester for quick checks and a full multimeter for detailed diagnostics. Use the pen tester first, and then verify readings with the multimeter for an extra layer of safety.
Types of Multimeters
Most multimeters have a digital display, but you can also find analog versions.
- Digital meters display the results of your test on a liquid crystal display (LCD) screen, making them easy to read and typically featuring auto-ranging, which helps save time and ensures more accurate measurements. Digital multimeters are likely a better option for beginner users.
- Analog multimeters have a measurement chart built into the display. When you’re testing an item, a needle points to the proper measurement on the chart. Analog multimeters are more difficult to read and require manual range selection, but they’re usually more affordable.
Size and Design
The size of a multimeter affects its function. Larger units can handle more types of jobs, while smaller handheld versions tend to work best for simple projects. Below, we go over the various types of multimeters.
This is the type of multimeter that electricians, engineers, and serious hobbyists use. These devices have additional ports and settings to test more items.
The most common type of multimeter, this device has a rectangular shape with three ports and a setting dial. Since handheld multimeters have all of the measurement capabilities you need for around-the-home use, we included this type in our review.
You can hold a pen-shaped multimeter in one hand. It has a single test probe for non-contact AC/DC voltage detection, which limits its functionality.
Voltage
Multimeters test electrical voltage. You should have the option to adjust the voltage and switch between alternating current (AC) and direct current (DC). Your home’s outlets and appliances use AC voltage, while computers and some other devices use DC voltage.
Pro Tip
- When choosing between a simple, non-contact voltage tester and a full multimeter, consider the type of readings you need. As demonstrated on This Old House, a basic non-contact tester can quickly identify if voltage is present. On the other hand, a multimeter gives a precise voltage reading and can measure current and resistance, making it the better choice for diagnosing electrical problems.
Resistance and Continuity
Your multimeter should also test electrical resistance, which is measured in ohms and reads continuity versus resistance in a circuit. For example, if you’re testing a broken wire that doesn’t have current passing through it, the resistance measurement should say “infinite.” On the other hand, if you’re testing a properly functioning wire, you would see a low resistance measurement.
Other Measurements
Some multimeters measure more than just voltage and resistance. You can also find models that test for temperature, current, diodes, transistors, and other measurements.
Multimeter Components
To help you understand exactly how multimeters work, we put together a list of components so you can learn more about these devices.
- Display: The display is located on the front of the tool. It’s either digital on digital devices or quartz crystal on analog devices. The display typically has a backlight and can show both numbers and letters.
- Dial: This knob is usually located in the center of the device. You can turn it left or right to change the measurement settings.
- Ports: These are located on the front of the multimeter. There’s one port that’s labeled “common” or “COM,” which is where you connect the negative side of the probe. You can also find a “positive” port that’s used for voltage measurements.
- Probes: These describe the ends of the wire that attach to the item you’re testing. Multimeters usually come with several probes you can change depending on what attaches best to the item you’re measuring. An alligator clip is one common type of probe.
- Wires: Multimeters come with at least one red and one black wire. One end of the wire attaches to one of the ports on the multimeter, and the other end attaches to the item you’re testing.
FAQs About Multimeters
How do I know if I can test a particular item with my multimeter?
The multimeter’s maximum and current voltage ratings should be greater than the voltage of the item you plan to measure. If you use a multimeter with a voltage that isn’t greater than the item’s voltage, you risk breaking the multimeter or shocking yourself.
How much do multimeters cost?
The cost of a multimeter is mostly tied to its size. A smaller pen-shaped model costs about $10–$40. Depending on how many settings it has, a handheld model costs $15–$250. A bench or box multimeter can cost upwards of $1,500.
What do the black and the red colors of the probe wires mean?
When you’re measuring volts, a black wire usually indicates “ground,” “common,” or “negative,” while a red wire usually indicates “live.” You don’t have to follow these guidelines when you’re measuring current, but it’s safer to do so to make sure you don’t mix up the wires when you go to measure voltage.
Do I need to maintain my multimeter?
You don’t have to clean your multimeter, but we recommend storing it in a safe place. Most multimeters come with a carrying case for an added layer of protection. If you have a digital multimeter, note that you need to replace its battery every so often.
How We Selected the Best Multimeters
To provide our readers with the best multimeter recommendations possible, we rely on several key sources of information to help guide our selection process.
- Initial research: Our research process began by compiling a list of multimeters with a significant number of verified buyer reviews and an average customer rating of 4–5 stars. We looked at positive and negative reviews alike, focusing on information from both satisfied and critical buyers.
- Expert insights: Over the years, we’ve learned that listening to what others have to say is key to building accurate, well-rounded articles. To complement our in-house expertise, our team looked at reviews and videos from trusted publications and independent testers, learned from subject matter experts, and drew insights from reader contributions.
- Final product selection: We then began fine-tuning our list by replacing older models with the latest versions and eliminating any discontinued models. From there, we pared the list down further by comparing each model’s feature set and selecting the best-in-class options for a variety of buyers, budgets, and scenarios.
Why You Can Trust Us
This Old House has empowered homeowners and DIYers for more than four decades with top-notch home improvement advice through television programs, print media, and digital content.
Our team focuses on creating in-depth product and service review content. To date, we’ve published over 1,600 reviews on products in the home space, from doorbell cameras and backyard fencing to pool vacuums and snow blowers.
Once we conclude our research, we craft a comprehensive, user-friendly article of recommended products and additional information to help our readers make the right purchase.
