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Decode resistor color bands to ohms — or find the bands for any resistance value.
4.7 kΩ ±5%
Minimum (-5%)
4.465 kΩ
Maximum (+5%)
4.935 kΩ
Band 1 — 1st digit — Yellow (4)
Band 2 — 2nd digit — Violet (7)
Band 3 — multiplier — Red (×10²)
Band 4 — tolerance — Gold (±5%)
Standard IEC 60062 color code: 4-band (2 digits + multiplier + tolerance), 5-band (3 digits), 6-band adds a temperature coefficient. Everything runs entirely in your browser.
Decode 4-band, 5-band and 6-band resistor color codes into resistance values with tolerance ranges and temperature coefficients, or work in reverse: enter a resistance and get the matching color bands. Features clickable color swatches and a live SVG resistor drawing that updates as you pick colors. Runs entirely in your browser.
The Resistor Color Code Calculator provides an immediate, browser-based solution for decoding 4-band, 5-band, and 6-band resistors or finding matching bands for target resistance values. Featuring interactive color swatches and a dynamic SVG preview, it eliminates manual calculation errors without requiring any software installation or user accounts.
Good to know: This tool is focused exclusively on color code conversion and does not substitute for physical multimeters or advanced circuit simulation software.
Decode resistor color bands to resistance values or find color bands for any target resistance in seconds.
Open the resistor color code tool
Navigate to the online Resistor Color Code Calculator in your web browser to start decoding or encoding.
Select your resistor band count
Choose whether you are working with a 4-band, 5-band, or 6-band resistor configuration.
Click color swatches for each band
Use the interactive color swatches to select the exact color for each sequential band on your resistor.
View the live resistance and tolerance
Check the live SVG resistor drawing and calculated output to instantly see the resistance value, tolerance range, and temperature coefficient.
Estimated time: PT1M
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