Resistor color code
Decode 4-band resistor color codes to identify resistance in Ohms and tolerance percentages according to electronic standards.
4-Band resistor visualizerStandard EIA-RS-279
1 kΩTolerance: ±5%
Resistance & tolerance calculation
How it works
1
Read color bands
Look at the resistor from left to right, starting with the band closest to the edge.
2
Set digits & multiplier
Select the first two significant digit colors and the third multiplier band.
3
Determine tolerance
Select the final gold, silver, or color band to identify allowable variation percentage.
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