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Capacitor Testers

10 Best Capacitor Testers 2025 in the United States

#1

Winner

9.7 score

Fluke 15B+ Digital Multimeter, for Electrical Applications, Measures AC/DC Voltage and Current Measurements up to 1000V and 10A, Along with Resistance, Continuity, Diode, and Capacitance Capabilities

9%OFF

Fluke 15B+ Digital Multimeter, for Electrical Applications, Measures AC/DC Voltage and Current Measurements up to 1000V and 10A, Along with Resistance, Continuity, Diode, and Capacitance Capabilities

Fluke

9.7 score

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The Fluke 15B+ Digital Multimeter is a solid choice for those looking to perform a variety of electrical measurements, including capacitance testing. With a capacitance range that caters to many everyday uses, this multimeter stands out for its ability to measure AC/DC voltage up to 1000V and current up to 10A, making it quite versatile for both residential and commercial electrical applications.

Rating
9.7
Chosen by1,201
Accuracy

Most important from
309 reviews

Accuracy
The accuracy of the Fluke 15B+ is impressive, differing by only 0.02 volts from a 30-year-old Fluke 76.
#2
9.4 score

GME Professional in Circuit ESR Capacitor Tester, Capacitance ESR Meter, Fully Assembled ESR Tester - Designed and Engineered in The USA, Fully Assembled ESR Tester

GME Professional in Circuit ESR Capacitor Tester, Capacitance ESR Meter, Fully Assembled ESR Tester - Designed and Engineered in The USA, Fully Assembled ESR Tester

GME

9.4 score

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The GME Professional in Circuit ESR Capacitor Tester is a solid choice for those needing an accurate and portable tool for measuring capacitance and ESR in both in-circuit and out-of-circuit applications. One of its main strengths is its microprocessor control that ensures precise testing at a frequency of 100 kHz while maintaining a low output voltage, which is critical for working with active components without interference. This feature can be especially beneficial for hobbyists and professionals who work with sensitive electronics.

#3
9.2 score

Atlas ESR70

Atlas ESR70

Velleman

9.2 score

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The Velleman Atlas ESR70 is a specialized tool designed for measuring capacitance and equivalent series resistance (ESR), making it a solid choice for hobbyists and electronics professionals alike who work with various types of capacitors. It has a capacitance range of 1uF to 22000uF, allowing users to test a wide variety of capacitors, including motor and electrolytic types, which is a significant advantage for those needing versatility in their measurements.

Rating
9.2
Capacitance Range
Accuracy
Additional Features

Most important from
210 reviews

Capacitance Range
It's a reliable in-circuit tester with a wide range of capacitor values and ease of operation.
Accuracy
No more desoldering capacitors to test them - it accurately tests in circuit, cutting troubleshooting time significantly.
Additional Features
This is the best Capacitor ESR meter that I have used. It truly saves time by implementing in-circuit testing.

Top 10 Best Capacitor Testers 2025 in the United States

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Slide 1

UEi Test Instruments

UEi Test Instruments Em201Spkit Static Pressure Kit

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11% OFF
#1

Winner

9.7 score

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Fluke

Fluke 15B+ Digital Multimeter, for Electrical Applications, Measures AC/DC Voltage and Current Measurements up to 1000V and 10A, Along with Resistance, Continuity, Diode, and Capacitance Capabilities

Display Type: clear display
Additional Features: CAT III 600V, AC/DC voltage 1000V, current 10A
Portability: 460 grams

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9% OFF

Chosen by 1201 this week

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UEi Test Instruments

UEi Test Instruments Em201Spkit Static Pressure Kit

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11% OFF
#2

9.4 score

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GME

GME Professional in Circuit ESR Capacitor Tester, Capacitance ESR Meter, Fully Assembled ESR Tester - Designed and Engineered in The USA, Fully Assembled ESR Tester

Capacitance Range: 0.47µF to 2200µF
Accuracy: precise
Test Frequency: 100 kHz
Additional Features: microprocessor control, auto calibration, buzzer
Portability: lightweight, rugged, one-handed tweezers

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#3

9.2 score

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Velleman

Atlas ESR70

Capacitance Range: 1uF to 22000uF
Accuracy: 0.01 ohms
Display Type: Digital
Additional Features: Audible alerts for ESR levels
Portability: 0.1 kg, battery-powered

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#4

8.9 score

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Luo ke

Honeytek A6013L Capacitor Tester

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19% OFF
#5

8.6 score

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FNIRSI

FNIRSI LCR-P1 Transistor Tester, Mosfet Transistor Capacitor Tester, SMD Electronic Component Tester, Diode Triode Zener Diode Resistance Inductance Battery Test LCR Meter MOS PNP NPN ESR Meter

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25% OFF

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#6

8.3 score

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Extech

Extech 380405 Capacitance Substitution Box

Capacitance Range: wide range
Accuracy: dependable
Display Type: large dual display with backlight
Additional Features: auto zero, test hold, measures AC/DC
Portability: lightweight, modest dimensions

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#7

8.0 score

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Alignimals

Alignimals Capacitor Tester, MF470 Auto Ranging Capacitance Meter, Professional Measuring Capacitance Resistance, ESR Capacitor Meter Car Audio Farad Super Capacitor Measurment 0.01pF to 470,000,000uF

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#8

7.7 score

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WESTOBiG

Transistor Tester, WESTOBIG LCR-P1 Transistor Meter Multifunctional Capacitor Tester LCR ESR Tester Diode Triode LCR ESR NPN PNP MOSFET SMD Tester NEC Infrared Decoding Anti-Burn

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#9

7.4 score

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Geevorks

MESR-100 Capacitor Tester V2, Geevorks Professional Capacitor Tester, Ohm Meter 0.001-100.0R with SMD Test Clip, Auto-Ranging Capacitor for Measuring Capacitance Resistance Circuit

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5% OFF
#10

7.1 score

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Supco

Supco MFD10 Digital Capacitor Tester with LED Display, 0.01 to 10000mF Range, 5% Accuracy

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21% OFF
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Buying Guide for the Best Capacitor Testers

Choosing the right capacitor tester can be a bit overwhelming, but understanding the key specifications can help you make an informed decision. Capacitor testers are essential tools for measuring the capacitance of capacitors, which is crucial for ensuring that electronic circuits function correctly. When selecting a capacitor tester, consider the following key specifications to find the best fit for your needs.
Capacitance RangeThe capacitance range indicates the range of capacitor values that the tester can measure. This is important because capacitors come in a wide variety of values, from picofarads (pF) to farads (F). If you work with small capacitors, a tester with a lower range (e.g., pF to µF) will be sufficient. For larger capacitors, ensure the tester can measure up to the required value (e.g., mF to F). Choose a tester with a range that covers the capacitors you commonly use.
AccuracyAccuracy refers to how close the tester's measurements are to the actual capacitance value. This is crucial for precise work, especially in professional or high-stakes applications. Accuracy is usually expressed as a percentage. Higher accuracy (e.g., ±0.5%) is better for detailed work, while lower accuracy (e.g., ±2%) might be acceptable for general use. Consider the level of precision you need for your projects when selecting a tester.
Display TypeThe display type determines how the measurement results are shown. Common types include digital displays (LCD or LED) and analog displays. Digital displays are easier to read and often provide more precise readings, while analog displays can be useful for observing trends and changes. If you prefer clear, easy-to-read results, go for a digital display. If you need to monitor variations, an analog display might be more suitable.
Test FrequencyTest frequency is the frequency at which the tester measures the capacitance. Different capacitors may perform differently at various frequencies, so having a tester that can operate at multiple frequencies can be beneficial. For general use, a single test frequency might suffice. However, if you work with a variety of capacitors or need detailed analysis, look for a tester with multiple test frequencies.
Additional FeaturesAdditional features can enhance the functionality of a capacitor tester. These may include auto-ranging, which automatically selects the appropriate range for the measurement, and data hold, which allows you to freeze the displayed value. Other features might include a backlit display for low-light conditions or a built-in ESR (Equivalent Series Resistance) meter. Consider which additional features will make your testing process more efficient and convenient.
PortabilityPortability refers to the ease with which you can carry and use the tester in different locations. If you need to use the tester in various places, a compact and lightweight model will be more convenient. Some testers are handheld and battery-operated, making them ideal for fieldwork. If you primarily use the tester in a fixed location, portability might be less of a concern.

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