Resistor Calculator
The following are tools to calculate the ohm value and tolerance based on resistor color codes, the total resistance of a group of resistors in parallel or in series, and the resistance of a conductor based on size and conductivity.
Resistor color code calculator
Use this calculator to find out the ohm value and tolerance based on resistor color codes.
Color Code Reference
| Color | 1st, 2nd Band | Multiplier | Tolerance |
|---|---|---|---|
| Black | 0 | × 1 | - |
| Brown | 1 | × 10 | ±1% (F) |
| Red | 2 | × 100 | ±2% (G) |
| Orange | 3 | × 1K | ±0.05% (W) |
| Yellow | 4 | × 10K | ±0.02% (P) |
| Green | 5 | × 100K | ±0.5% (D) |
| Blue | 6 | × 1M | ±0.25% (C) |
| Violet | 7 | × 10M | ±0.1% (B) |
| Grey | 8 | × 100M | ±0.01% (L) |
| White | 9 | × 1G | - |
| Gold | - | × 0.1 | ±5% (J) |
| Silver | - | × 0.01 | ±10% (K) |