Resistor colour code
Identify four-, five- or six-band resistor values, reading from the first band.
Inputs
Calculations run in your browser. Your input values are not submitted or saved.
Results
- Resistance
- 1000 Ω
- Tolerance
- 5 %
Colour codes do not establish power rating or component health. Measure the component de-energized and disconnected from the circuit.
Formula & guidance
R=significant_digits × multiplier
Colour codes do not establish power rating or component health. Measure the component de-energized and disconnected from the circuit.
Change the example inputs and check each field’s units. Use equipment datasheets and applicable project standards for final decisions. Results do not establish Canadian electrical-code compliance or certify a design.