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10 Best Clamp Meters 2025 in the United States
#1
Winner
Fluke 323 Clamp Meter For Commercial/Residential Electricians, Measures AC Current To 400 A,Measures AC/DC Voltage To 600 V, Resistance And Continuity, Includes 2 Year Warranty And Soft Carrying Case
The Fluke 323 Clamp Meter is an excellent choice for both commercial and residential electricians seeking a reliable tool for measuring electrical parameters. It effectively measures AC current up to 400 amps and AC/DC voltage up to 600 volts, making it versatile for various applications. One of its key strengths is the true RMS capability, which ensures accurate readings even with non-linear loads. This is particularly useful in real-world scenarios where waveforms can vary significantly. The jaw opening size, which accommodates conductors up to 30 millimeters, allows for easy measurement without the need to interrupt or touch the circuit, enhancing safety and convenience.
Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!#2
AstroAI Digital Clamp Meter Multimeter 2000 Counts Amp Voltage Tester Auto-ranging with AC/DC Voltage, AC Current, Resistance, Capacitance, Continuity, Live Wire Test, NCV, Black
The AstroAI Digital Clamp Meter is a versatile tool designed to address both industrial and household electrical issues. It effectively measures AC current, AC/DC voltage, resistance, capacitance, diode continuity, and performs live wire tests. However, it's important to note that it does not measure DC current, which could be a limitation for some users.
Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!#3
Fluke 376FC AC/DC Clamp Meter with iFlex For Industrial/Commercial Electricians, VFD Low Pass Filter For Accurate Measurements, Inrush Measurements, Bluetooth Connectivity For Remote Measurements
The Fluke 376FC AC/DC Clamp Meter is designed for industrial and commercial electricians, offering a range of features that cater to their specific needs. It measures both AC and DC currents, with a robust current measurement range, making it versatile for various electrical applications. The inclusion of the iFlex current probe allows measurements in tight spaces, thanks to its flexible design. This can be particularly useful when dealing with complicated wiring setups.
Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Top 10 Best Clamp Meters 2025 in the United States
#1
Winner
10.0 score
Fluke 323 Clamp Meter For Commercial/Residential Electricians, Measures AC Current To 400 A,Measures AC/DC Voltage To 600 V, Resistance And Continuity, Includes 2 Year Warranty And Soft Carrying Case
Fluke 323 Clamp Meter For Commercial/Residential Electricians, Measures AC Current To 400 A,Measures AC/DC Voltage To 600 V, Resistance And Continuity, Includes 2 Year Warranty And Soft Carrying Case
Current Measurement Range: AC current up to 400 amps
AC/DC Measurement: AC/DC voltage up to 600 volts
Jaw Opening Size: 30 millimeters
True RMS: Yes
Additional Functions: audible continuity sensor
Safety Ratings: CAT IV 300V, CAT III 600V
Chosen by 1247 this week
AstroAI Digital Clamp Meter Multimeter 2000 Counts Amp Voltage Tester Auto-ranging with AC/DC Voltage, AC Current, Resistance, Capacitance, Continuity, Live Wire Test, NCV, Black
AstroAI Digital Clamp Meter Multimeter 2000 Counts Amp Voltage Tester Auto-ranging with AC/DC Voltage, AC Current, Resistance, Capacitance, Continuity, Live Wire Test, NCV, Black
AC/DC Measurement: AC current, AC/DC voltage
Jaw Opening Size: large
Additional Functions: resistance, capacitance, diode continuity, live wire
Display and Readability: LCD backlit screen, built-in flashlight
Safety Ratings: pollution degree 2, overvoltage category III 600V
Fluke 376FC AC/DC Clamp Meter with iFlex For Industrial/Commercial Electricians, VFD Low Pass Filter For Accurate Measurements, Inrush Measurements, Bluetooth Connectivity For Remote Measurements
Fluke 376FC AC/DC Clamp Meter with iFlex For Industrial/Commercial Electricians, VFD Low Pass Filter For Accurate Measurements, Inrush Measurements, Bluetooth Connectivity For Remote Measurements
Current Measurement Range: robust
AC/DC Measurement: Yes
True RMS: Yes
Additional Functions: iFlex probe, inrush, Bluetooth, logging
Display and Readability: generally good
Klein Tools CL810 Pro Digital Clamp Meter with Flashlight and Illuminated Dial, 600A AC/DC Auto-Ranging, True RMS, NCVT, Measures Current, LOZ,Temperature
Klein Tools CL810 Pro Digital Clamp Meter with Flashlight and Illuminated Dial, 600A AC/DC Auto-Ranging, True RMS, NCVT, Measures Current, LOZ,Temperature
Current Measurement Range: 600A
AC/DC Measurement: Yes
True RMS: Yes
Additional Functions: temperature, diode, capacitance
Display and Readability: transflective display, illuminated dial, worklight
Safety Ratings: CAT III/CAT IV
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Fluke 117/323 Kit Multimeter and Clamp Meter Combo Kit For Residential And Commercial Electricians, AC/DC Voltage, AC Current 400 A, Includes Test Leads, TPAK And Carrying Case
Fluke 117/323 Kit Multimeter and Clamp Meter Combo Kit For Residential And Commercial Electricians, AC/DC Voltage, AC Current 400 A, Includes Test Leads, TPAK And Carrying Case
Current Measurement Range: AC up to 400A, voltage up to 600V
AC/DC Measurement: AC and DC voltage and current
True RMS: Yes
Additional Functions: Low input impedance
Display and Readability: Readable
Safety Ratings: UL, CSA, CE
Fluke 902 FC HVAC True-RMS Clamp Meter
Fluke 902 FC HVAC True-RMS Clamp Meter
Current Measurement Range: 200 DC
AC/DC Measurement: AC/DC
True RMS: Yes
Additional Functions: Extended resistance, capture gas temperatures, Bluetooth
Fluke 378FC AC/DC TRMS Non-Contact Voltage Wireless Clamp w/PQ Indicator & iFlex
Fluke 378FC AC/DC TRMS Non-Contact Voltage Wireless Clamp w/PQ Indicator & iFlex
AC/DC Measurement: Yes
True RMS: Yes
Additional Functions: FieldSense, 3-phase tests, power quality
Display and Readability: User-friendly, visibility issues in sunlight
Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging, 400 Amp, NCVT Tester Clamp Jaw Integration, Hi-Viz LCD Display, Reverse Contrast Display, TRMS and More
Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging, 400 Amp, NCVT Tester Clamp Jaw Integration, Hi-Viz LCD Display, Reverse Contrast Display, TRMS and More
Current Measurement Range: up to 400 Amps
AC/DC Measurement: AC and DC
True RMS: True RMS
Additional Functions: voltage, resistance, continuity, frequency, duty cycle
Display and Readability: high-visibility LCD display
Safety Ratings: CAT III/CAT IV
#10
8.6 score
Fluke-301D/ESP, 600A AC/DC Clamp Meter with Slim Body and Thin Jaw Arm
Fluke-301D/ESP, 600A AC/DC Clamp Meter with Slim Body and Thin Jaw Arm
Current Measurement Range: up to 600 A
AC/DC Measurement: AC and DC
Jaw Opening Size: 10 mm
Additional Functions: voltage, resistance, continuity, capacitance
Safety Ratings: CAT III 300V
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Buying Guide for the Best Clamp Meters
Choosing the right clamp meter can be a bit overwhelming, but understanding the key specifications can help you make an informed decision. A clamp meter is a versatile tool used to measure electrical current without having to disconnect the circuit. It's essential for electricians, technicians, and even DIY enthusiasts who need to troubleshoot electrical issues safely and efficiently. When selecting a clamp meter, consider the following key specifications to ensure it meets your needs and provides accurate readings for your specific applications.Current Measurement RangeThe current measurement range indicates the maximum and minimum current the clamp meter can measure. This is important because it determines the types of electrical systems you can work with. Clamp meters typically have ranges from a few milliamps (mA) to several hundred amps (A). For residential or light commercial use, a range up to 400A is usually sufficient. For industrial applications, you might need a meter that can handle up to 1000A or more. Choose a clamp meter with a range that covers the highest current you expect to measure.
AC/DC MeasurementClamp meters can measure either AC (alternating current), DC (direct current), or both. AC measurement is common in household and commercial electrical systems, while DC measurement is essential for automotive, solar, and battery applications. If you only need to measure household currents, an AC-only clamp meter will suffice. However, if you work with a variety of electrical systems, a clamp meter that can measure both AC and DC currents will be more versatile and useful.
Jaw Opening SizeThe jaw opening size determines the maximum diameter of the conductor the clamp meter can encircle. This is crucial for ensuring the meter can fit around the wires or cables you need to measure. Jaw openings typically range from 0.5 inches to over 2 inches. For standard household wiring, a smaller jaw opening is usually adequate. For larger industrial cables, you'll need a clamp meter with a larger jaw opening. Consider the size of the conductors you'll be working with to choose the appropriate jaw opening size.
True RMSTrue RMS (Root Mean Square) capability allows the clamp meter to provide accurate readings for both sinusoidal and non-sinusoidal AC waveforms. This is important for measuring current in systems with variable frequency drives, electronic ballasts, or other non-linear loads. If you work with modern electrical systems that may have distorted waveforms, a True RMS clamp meter is essential for accurate measurements. For basic applications with purely sinusoidal waveforms, a standard clamp meter without True RMS may be sufficient.
Additional FunctionsMany clamp meters come with additional functions such as voltage measurement, resistance measurement, continuity testing, and temperature measurement. These features can add versatility to your tool, allowing you to perform multiple tests with a single device. If you need a multi-functional tool for various electrical tasks, look for a clamp meter with these additional capabilities. However, if you only need to measure current, a basic clamp meter without extra functions may be more straightforward and easier to use.
Display and ReadabilityThe display of the clamp meter should be clear and easy to read, even in low-light conditions. Look for features like a backlit display, large digits, and a high-contrast screen. Some clamp meters also have data hold functions to freeze the reading on the display, which can be helpful when working in awkward positions. Choose a clamp meter with a display that you can easily read in the environments where you'll be using it.
Safety RatingsSafety ratings, such as CAT (Category) ratings, indicate the environments in which the clamp meter can be safely used. These ratings are based on the potential transient overvoltages that the meter can withstand. For example, CAT III is suitable for distribution panels and fixed installations, while CAT IV is for outdoor installations and utility connections. Always choose a clamp meter with a safety rating appropriate for the highest category of electrical environment you will be working in to ensure your safety.