10 Best Capacitor Testers 2025 in the United States

The Fluke 117 Digital Multimeter is a versatile tool that includes capacitance measurement among many other functions, making it a good choice if you want a multi-purpose device rather than a dedicated capacitor tester. It offers a decent capacitance range with an accuracy of about +/-0.5%, which is reliable enough for most professional and home repair tasks. The large backlit digital display makes reading measurements easy, especially in low-light environments. A notable strength is its True RMS capability, which ensures accurate readings even with complex electrical signals, plus features like Low Input Impedance help avoid false readings from stray voltages.

While portable and compact, weighing just over half a kilogram and powered by standard AA batteries, it’s slightly bulkier than some single-purpose capacitor testers. Additional features like non-contact voltage detection and automatic AC/DC voltage selection add great value for broader electrical work but don’t directly enhance capacitor testing.

If you’re mainly focused on checking capacitors, a dedicated capacitor tester might offer more specialized functions and possibly more detailed capacitance ranges or test frequencies. The Fluke 117 serves as a solid, dependable tool for those wanting a reliable all-in-one multimeter with decent capacitor testing capabilities included.

The B&K Precision 891 Benchtop LCR Meter is a versatile and accurate tool for measuring inductance (L), capacitance (C), and resistance (R). It offers a wide capacitance range, making it suitable for a variety of testing needs in both professional and industrial settings. The high test frequency of up to 300 kHz ensures precise measurements, which is essential for detailed analysis and diagnostics.

Additionally, its accuracy is quite reliable, which is a critical factor for users requiring precise data for their tasks. The device features a clear and easy-to-read display, which simplifies the process of monitoring measurements and settings. One of its standout characteristics is that it is a benchtop model, which means it is designed for stability and robustness during extended use in a fixed location.

The B&K Precision 891 includes additional features such as test signal levels and selectable measurement parameters, enhancing its functionality and customization options for different testing scenarios. If your primary need is a reliable and accurate benchtop LCR meter with advanced capabilities, this model is an excellent choice.

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.

One of the biggest strengths of the Fluke 15B+ is its accuracy, which many users appreciate when diagnosing electrical issues. The clear display makes it easy to read measurements, even in poorly lit situations. Additionally, the CAT III 600V safety rating ensures users can work on electrical systems with a degree of confidence, which is especially important for those less experienced in handling electric components.

While the multi-functionality is a plus, it may not be as specialized for capacitor testing as some dedicated capacitor testers. Users who only need to measure capacitance may find that this multimeter includes additional features that could complicate its use. Portability is a minor concern too; although it's relatively lightweight at about 460 grams, it may still be bulkier compared to handheld, dedicated capacitance meters.