Resistor Color Code Calculator

How to use it

1. Identificar the values of entrada
2. Aplicar the fórmula correspondiente
3. Realizar the cálculo
4. Obtain the 2 results

Common mistakes

• ⚠️ Entering values in the wrong units — check that all measurements use the same unit system.
• ⚠️ Forgetting to include a waste or safety margin — add 5-10% extra for real-world projects.
• ⚠️ Using incorrect default values — verify the suggested defaults match your specific situation.
• ⚠️ Rounding intermediate values too early — keep full precision until the final result.

Worked example

Decode red-red-black-brown-gold.

Result of the cálculo codigo colores resistance.