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Resistor Color Code

Decode 4-band and 5-band colour codes, or enter a value to see which bands to look for. · in Resistors

color bandsdecode

Decode 4-band and 5-band colour codes, or enter a value to see which bands to look for. Also handles SMD 3-digit, 4-digit and EIA-96 codes. Shows value, tolerance and the E-series the part belongs to.

How to use

Two modes — Colour bands and SMD.

What it's for

Decode 4/5-band colour codes and SMD markings — in both directions.

You enter

  • Colour bands: pick the colours to read a value, or enter a value to see which bands to look for. Handles 4-band and 5-band.
  • SMD: enter the printed code (103, 4R7, 01C), including EIA-96 three-character codes.

You get

  • Resistance, tolerance, the real-world value range, and whether the value belongs to a standard E-series.
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