Capacitor Code Calculator
Small ceramic capacitors are marked with a three digit code rather than a printed value, and this calculator decodes it for you. The first two digits are the significant figures and the third is the number of zeros to append, giving a value in picofarads, so a code of 104 means 10 followed by four zeros, which is 100000 picofarads or 0.1 microfarads. This tool reads the code, works out the capacitance, and shows it converted to picofarads, nanofarads and microfarads so you can match it to a schematic or a parts bin. It also accepts an optional tolerance letter. Decoding these by hand is fiddly and easy to slip on, so an instant lookup keeps your builds accurate. Everything is computed locally in your browser as you type.
How to use Capacitor Code Calculator
- Enter the 3 digit code printed on the ceramic capacitor, such as 104.
- Read the capacitance in picofarads.
- See the equivalent value in nanofarads and microfarads.
Frequently asked questions
How does a 3 digit capacitor code work?
The first two digits are significant figures and the third is the number of zeros to add, giving a value in picofarads. For example 104 is 100000 pF.
What is 104 in nanofarads and microfarads?
A code of 104 equals 100000 picofarads, which is 100 nanofarads or 0.1 microfarads.
Does it show all three units?
Yes. It converts the coded value to picofarads, nanofarads, and microfarads at once.
What is Capacitor Code Calculator?
Small ceramic capacitors are marked with a three digit code rather than a printed value, and this calculator decodes it for you. The first two digits are the significant figures and the third is the number of zeros to append, giving a value in picofarads, so a code of 104 means 10 followed by four zeros, which is 100000 picofarads or 0.
Is Capacitor Code Calculator free to use?
Yes. Capacitor Code Calculator is completely free, with no sign-up and no usage limits.
Does Capacitor Code Calculator work in a web browser?
Yes. Capacitor Code Calculator runs in any modern web browser. There is nothing to download or install.
Is my data private with Capacitor Code Calculator?
Yes. Capacitor Code Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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