Top 10 Best amp meter in 2026

Last Updated - 6/6/2026

🏆Best Choice

KLEIN TOOLS

Klein Tools CL120VP Electrical Voltage Test Kit with Clamp Meter, Three Testers, Test Leads, Pouch and Batteries

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•VERSATILE CLAMP METER: CL120 measures AC current and NCVT via clamp; AC/DC voltage, resistance, and continuity via test-leads
•ACCURATE MEASUREMENTS: Auto-ranging technology selects the appropriate measurement range for accurate results
•CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
•GFCI RECEPTACLE TESTER: Cat. No. RT210 detects common wiring issues in standard and GFCI receptacles, including open ground, reverse polarity, and more
•NON-CONTACT VOLTAGE DETECTOR: Cat. No. NCVT3P features dual-range capabilities to detect a wide range of AC voltages for various applications
•BRIGHT FLASHLIGHT: Illuminate the work area with a built-in flashlight, independent of voltage detection
•VOLTAGE TESTER: Cat. No. ET40 tests both AC and DC voltages at multiple levels for comprehensive electrical testing

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$79.98

$89.98

-11%

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KLEIN TOOLS

Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging, 400 Amp, NCVT Tester, Hi-Viz LCD Display, TRMS, Continuity Resistance, Temperature and More

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•VERSATILE CLAMP METER: Measures AC/DC current and NCVT via clamp; AC/DC voltage, resistance, continuity, frequency/duty cycle, DC microamps, diode test and capacitance via test-leads; temperature via thermocouple
•NON-CONTACT VOLTAGE TESTING: Integrated into the clamp jaw for convenient electrical testing
•REVERSE-CONTRAST DISPLAY: High-visibility reverse-contrast LCD ensures improved viewability in all lighting conditions
•ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements
•CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
•ADDITIONAL FEATURES: Max/Min, Rel/Zero, Data Hold capability for enhanced functionality and auto-power off after 10 minutes to conserve battery life
•COMPLETE PACKAGE: Includes carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 3 x AAA batteries

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$69.99

$99.97

-30%

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KLEIN TOOLS

Klein Tools CL810 Pro Digital Clamp Meter, 600A AC/DC Auto-Ranging, True RMS, NCVT, Measures Current, LOZ,Temperature, with Flashlight and Illuminated Dial

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•ACCURATE AND RELIABLE PRECISION: Clamp meter delivers precise readings for various applications and complex signals with True RMS technology and LoZ (Low Impedance) mode
•DURABLE METER FOR DIVERSE APPLICATIONS: Measures AC/DC voltage, current, resistance, micro amps, temperature, diode test, continuity, capacitance, frequency/duty cycle, and inrush with 6.6-Foot (2 m) drop protection and IP40 ingress protection
•ENHANCED VISIBILITY: Transflective reverse-contract display for clear data in any light; lighted dial ensures clear visibility and easy reading in low-light environments
•BUILT IN WORKLIGHT: Illuminate work area to enhancing visibility in dark or confined spaces
•NON-CONTACT VOLTAGE DETECTION: Integrated into the clamp jaw with audible and visual indicators that intensify near the voltage source
•ADDITIONAL FEATURES: Offers Max/Min values, relative mode, DC zero function, data hold, auto power-off, integrated lead holder, worklight, and a mount for an optional magnetic attachment
•COMPLETE PACKAGE: Includes carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 3 x AAA batteries

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$139.92

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KLEIN TOOLS

Klein Tools CL120 Digital Clamp Meter, Auto-Ranging 400 Amp AC, AC/DC Voltage, Resistance, Continuity, Non-Contact Voltage Tester Detection

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•VERSITILE CLAMP METER: Measures AC current and NCVT via clamp; AC/DC voltage, resistance, and continuity via test-leads
•NON-CONTACT VOLTAGE TESTING: Integrated into the clamp jaw for convenient electrical testing
•BACKLIT DISPLAY: LCD shows clear readings in low-light conditions for enhanced visibility
•ACCURATE MEASUREMENTS: Auto-ranging technology selects the appropriate measurement range for accurate results
•CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
•ADDITIONAL FEATURES: Max, Data Hold capability for enhanced functionality and auto-power off after 10 minutes to conserve battery life
•COMPLETE PACKAGE: Includes carrying case, test leads with CAT III/CAT IV safety caps, instructions, and 3 x AAA batteries

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$61.89

$64.98

-5%

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KLEIN TOOLS

Klein Tools 69409 Line Splitter for Clamp Meter, Measures up to 15A Current Draw, 10x Measurement, Designed for North American Outlets

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Allows the measuring of current draw up to 15A without splitting the load's power cord
•For use with all Klein clamp meters
•Can be used to perform voltage checks with standard multimeter probes
•Provides 10X measurement mode
•For North American-style outlets only

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$16.96

$19.99

-15%

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KLEIN TOOLS

Klein Tools CL800 Digital Clamp Meter, Auto Ranging TRMS, AC/DC Volt/Current, LoZ, Continuity, Frequency, Capacitance, NCVT, Temp, More 1000V

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•VERSATILE TOUGH CLAMP METER: Measures AC/DC current and NCVT via clamp; AC/DC voltage, resistance, continuity, frequency/duty cycle, diode test and capacitance via test-leads; temperature via thermocouple
•LOW IMPEDANCE MODE: LoZ mode for identifying and eliminating ghost or stray voltages
•BACKLIT DISPLAY: LCD shows clear readings in low-light conditions for enhanced visibility
•ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements
•CONVENIENT FEATURES: Integrated worklight; test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
•ENHANCED DURABILITY: IP40 ingress protection and 6.6-Foot (2 m) drop protection to meet jobsite demands for electricians
•COMPLETE PACKAGE: Includes carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 2 x AAA batteries

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$121.99

$139.96

-13%

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KLEIN TOOLS

Klein Tools CL120KIT Clamp Meter Electrical Test Kit, AC Auto Ranging 400 Amp, Backlit Display, Includes GFCI Tester-Line Splitter-Pouch-Leads-3 x AAA

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•VERSITILE CLAMP METER: CL120 measures AC current and NCVT via clamp; AC/DC voltage, resistance, and continuity via test-leads
•ACCURATE MEASUREMENTS: Auto-ranging technology selects the appropriate measurement range for accurate results
•CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
•GFCI RECEPTACLE TESTER: Cat. No. RT210 detects common wiring issues in standard and GFCI receptacles, including open ground, reverse polarity, and more
•LINE SPLITTER FUNCTION: Use the line splitter (Cat. No. 69409) to measure current draw up to 15A without splitting the load's power cord
•SAFETY RATING: CAT III 600V, Class 2, Double insulation safety rating for reliable and secure operation
•COMPLETE PACKAGE: Includes a case, test leads, and batteries, ensuring you have everything you need for immediate use

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$72.50

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KLEIN TOOLS

Klein Tools CL220 Digital Clamp Meter, Auto-Ranging 400 Amp AC, AC/DC Voltage, TRMS, Resistance, Continuity, NCVT Detection, and Temp

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•VERSATILE CLAMP METER: Measures AC current and NCVT via clamp; AC/DC voltage, resistance, and continuity via test-leads; temperature via thermocouple
•NON-CONTACT VOLTAGE TESTING: Integrated into the clamp jaw for convenient electrical testing
•BACKLIT DISPLAY: LCD shows clear readings in low-light conditions for enhanced visibility
•ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements
•CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
•ADDITIONAL FEATURES: Max, Data Hold capability for enhanced functionality and auto-power off after 10 minutes to conserve battery life
•COMPLETE PACKAGE: Includes carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 3 x AAA batteries for electricians and electrical work

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$69.97

$74.97

-7%

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KLEIN TOOLS

Klein Tools CL445 HVAC Clamp Meter, Auto-Ranging TRMS, NCVT, Measures Voltage, Current, Temperature, Micro Amps, InRush and More

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•VERSITILE HVAC CLAMP METER: Measures AC current, inrush and NCVT via clamp; AC/DC voltage, resistance, continuity, frequency/duty cycle, DC microamps, diode test and capacitance via test-leads; temperature via thermocouple
•NON-CONTACT VOLTAGE TESTING: Integrated into the clamp jaw for convenient electrical testing
•DUAL VOLTAGE + CURRENT DISPLAY: Backlit LCD shows voltage and current simultaneously for easy readings in any lighting condition
•ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements
•CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
•ADDITIONAL FEATURES: Max/Min, Inrush, Data Hold capability for enhanced functionality and auto-power off to conserve battery life
•COMPLETE PACKAGE: Includes carrying case, test leads with CAT III/CAT IV safety caps, alligator clips, K-Type thermocouple, instructions, and 3 x AAA batteries with thin clamp jaw for electrician and HVAC professionals

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$109.70

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KLEIN TOOLS

Klein Tools CL700 Auto Ranging Digital Clamp Meter, TRMS 600Amp, AC/DC Volts, Current, LoZ, Continuity, Frequency, NCVT, Temp, More, 1000V

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•VERSITILE TOUGH CLAMP METER: Measures AC current and NCVT via clamp; AC/DC voltage, resistance, continuity, frequency/duty cycle, diode test and capacitance via test-leads; temperature via thermocouple
•LOW IMPEDANCE MODE: LoZ mode for identifying and eliminating ghost or stray voltages
•BACKLIT DISPLAY: LCD shows clear readings in low-light conditions for enhanced visibility
•ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements
•CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
•ENHANCED DURABILITY: IP40 ingress protection and 6.6 ft. (2 m) drop protection to meet jobsite demands
•COMPLETE PACKAGE: Includes carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 2 x AAA batteries
•Built to withstand a 6.6-Foot (2 m) drop
•Low battery indicator and easily accessible battery compartment
•Includes a carrying pouch, test leads, thermocouple with adapter and batteries
•Meets requirements for use in basic and controlled electromagnetic environments like residential, office and light-industrial locations
•Operating Temperature: 32-degrees F to 104-degrees F (0-degrees C to 40-degrees C)

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$91.99

$109.97

-16%

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