10 Best Capacitor Testers 2025 in the United States

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.

The Extech 380405 Capacitance Substitution Box is designed for those who need a reliable tool for measuring capacitance. It covers a wide range, which is great for various applications. The accuracy should be dependable thanks to the automatic zero adjustment feature, which ensures precise readings. The large dual display with backlight makes it easy to read results even in low-light conditions, adding to its usability. The test hold function is a handy feature for making operations simpler and more efficient.

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.