Capacitor Code Calculator

Use this capacitor code calculator to find the value of a capacitor from the code printed on it, or to find the code for a value.

Small capacitors are too small to have their value printed on them, so they get a code. The most common one has three digits. The first two are the value, and the third is how many zeros to add. The result is in picofarads:

104 = 10 \cdot 1 0^{4} pF = 100, 000 pF = 100 nF

Code to value

Code on the Capacitor

Picofarad (pF): -
Nanofarad (nF): -
Microfarad (µF): -
Tolerance: -

Value to code

Capacitance

Code: -

Other Markings

A letter after the code is the tolerance. For example, J means ±5% and K means ±10%.

Some capacitors use a letter as the decimal point instead: 4n7 is 4.7 nF and 2u2 is 2.2 µF. Older capacitors often show their value in microfarads, like 0.1 for 0.1 µF. The calculator understands all of these.

Want to learn more? Check out capacitor values, or convert between units with the capacitor converter.