Resistor Calculator

Color bands • Value lookup • Series/Parallel • LED calculator

█ Color Bands to Value
--
Select bands above
↔ Value to Color Bands
Ω
--
Enter a resistance value
≡ Series / Parallel Calculator
R1
R2
Series (total)
--
Parallel (total)
--
◈ LED Resistor Calculator
R = (Vs - Vf) / If
150 Ω
Nearest standard: 150Ω (E24)
Power dissipated: 0.06 W
☰ Reference Tables
E12 Base Values (10% tolerance)
E24 Base Values (5% tolerance)
Click a value to look up its color bands
Band ColorToleranceSeries
Brown±1%E96
Red±2%E48
Gold±5%E24
Silver±10%E12
None±20%E6
Green±0.5%E192
Blue±0.25%E192
Violet±0.1%E192
Gray±0.05%--