Resistor Color Band Calculator
Select color bands to calculate the resistance value (Ω) and tolerance.
Category: Life Tools
When to use?
Read color bands on a resistor to determine its exact value.
How to use
- Select 4-band or 5-band mode.
- Choose colors in order.
- See the calculated resistance and tolerance.
Usage Examples
- Read resistor values - Quickly decode resistance from color bands.
- Circuit verification - Confirm component values before soldering.
FAQ
4-band vs 5-band?
5-band resistors have 3 significant digits for higher precision.
What are gold/silver bands?
Gold = ×0.1 multiplier or ±5% tolerance; Silver = ×0.01 or ±10%.
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