Resistor Color Code Calculator

Name: Resistor Color Code Calculator
Rating: 4.9 (1456 reviews)

Decode 4-band resistor color code to find resistance and tolerance.

Calculator

Band 1 (1st digit)

Band 2 (2nd digit)

Band 3 (Multiplier)

Band 4 (Tolerance)

Result

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4-band code: Band 1 = 1st digit, Band 2 = 2nd digit, Band 3 = multiplier, Band 4 = tolerance. Example: Brown-Black-Red-Gold = 1-0-×100-±5% = 1000Ω = 1kΩ ±5%. Gold/silver bands on the right = tolerance.