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Resistor Color Code Calculator

Type a resistance value to see live color bands update on the resistor — or spin the dials to decode a physical component.

Calculator

Mode
Bands
Resistance value
E-Series
Exact Match
📋 E-Series First Decade  ·  1 Ω – 10 Ω  ·  Click to calculate
E12 · ±10%
E24 · ±5%

Live Preview

Component
Select a value or spin dials

Color Reference

SMT / SMD Resistor Codes

SMT / SMD Resistor Code Calculator

Surface-mount resistors use printed numeric codes instead of color bands. Decode any 3-digit, 4-digit or EIA-96 code — or generate the code from a resistance value.

Printed Code

Chip Visual

SMT Component
0603
Package size
Display format