Resistor Color Code Calculator
Decode 4-band and 5-band resistor color codes into resistance, tolerance and min/max values.
How to use the Resistor Color Code Calculator
- Enter or select: Number of bands, 1st band, 2nd band, 3rd band (5-band only), Multiplier, Tolerance.
- The results (Resistance, Tolerance, Minimum, Maximum) are calculated instantly as you type.
- Use “Copy link” to share the calculation with the same input values.
Formula
- 4-band: (d₁d₂) × multiplier
- 5-band: (d₁d₂d₃) × multiplier
About this tool
Read the bands starting from the end farthest from the gold/silver tolerance band.