Resistor Calculator — Free Online Calculator with Step-by-Step Guide
Decode 4/5/6-band resistor color codes to ohms or reverse-calculate the color bands from any resistance value. Free, instant, and accurate.
Resistor Calculator
Results below
Enter Values
Tolerance
±1%
Min Value
9.90 Ω
Max Value
10.10 Ω
Color Bands
["Brown","Black","Black","Brown"]
Numeric Value
10 Ω
Scenario Comparison
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Resistance
10.00 Ω
Tolerance
±1%
Value Range (based on tolerance)
Min
9.90 Ω
Nominal
10.00 Ω
Max
10.10 Ω
Band Legend
E-series Reference
Standard resistor values follow the E-series (E12, E24). E12 has 12 values per decade (10, 12, 15, 18, 22, 27, 33, 39, 47, 56, 68, 82). E24 has 24 values for higher precision.
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