Resistor Color Code Tool

This is an interactive tool. Enter your inputs and it computes a detailed, accurate result tailored to your scenario.

1. 1

   Step 1

   Enter the electrical values: voltage, current, resistance.

2. 2

   Step 2

   Hit "Calculate" and the result is computed automatically.

3. 3

   Step 3

   Review the result and details below before relying on it.

• 1

  Double-check units (A, V, Ω, W).

• 2

  Use RMS values for AC where relevant.

• 3

  Account for tolerances in real components.

• Not double-checking the input units before calculating.

• Copying the result without reading the explanation.