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Capacitor Code Decoder

Decode capacitor markings like 104K or 2A472J.

Runs in your browser — nothing is uploaded
e.g. 104, 472J, 2A104K, 4n7, 22p

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For learning, hobby and prototyping use. Not professional electrical design advice — follow applicable codes and standards.

How to use Capacitor Code Decoder

  1. Enter your values — the unit for each field is shown next to it.
  2. The result updates instantly as you type.
  3. Copy the results, or change inputs to compare scenarios.

Formula & assumptions

3-digit code: first two digits × 10^(third) pF (8 = ×0.01, 9 = ×0.1)

Example: 104 = 10 × 10⁴ pF = 100 nF.

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