ResistorCode is a resistor color code calculator that decodes 4, 5 and 6 band resistors, finds the bands for any value, reads SMD codes and sizes LED resistors — with no account.
It was built to be fast and private. There are no accounts and no uploads; every calculation happens in your browser. The site may be supported by unobtrusive advertising, which never appears inside the tool itself.
Spotted a bug or want a new feature? Get in touch.