Resistor Color Code Calculator (4, 5 & 6 Band)

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4 band is the most common; 5 and 6 band parts add a third digit and (6 band) a temperature coefficient.
Used only for 5 and 6 band resistors. Ignored in 4 band mode.
Only on 6 band resistors. Ignored for 4 and 5 band.
Optional. Estimate how much the value drifts when the part heats up by this many degrees (6 band only).
°C
Resistance
1 kΩ

Nominal value with an engineering prefix (Ω, kΩ, MΩ).

Resistance in ohms1,000Ω
Tolerance5%
Allowed range950 Ω, 1.05 kΩ
5% %
Ultra precision<0.5Precision0.5-2Standard2-5General5-10Loose10+

This resistor reads 1 kΩ at ±5% tolerance.

  • The digit bands form 1 kΩ after the multiplier is applied.
  • A ±5% tolerance means the true value may fall anywhere from 950 Ω to 1.05 kΩ.
  • Read the bands from the end where they are grouped closest together; the lone tolerance band sits slightly apart.

Next stepConfirm with a multimeter on a known-good circuit, aged or heated resistors can drift outside their rated tolerance.

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