A resistor color code calculator reads IEC 60062 bands. 4-band: digit, digit, multiplier, tolerance. 5-band adds a third digit. 6-band adds temperature coefficient. Reverse mode maps a value back to digits and multiplier.
Brown 1, black 0, red ×100, gold ±5% is 1.0 kΩ ±5%. A 5-band 1.00 kΩ is brown-black-black-brown-brown (±1%).
Decoded
1 kΩ
Results can be wrong. This calculator is unofficial. Figures can be incomplete, rounded, or not updated. Use them at your own risk and check a tape, datasheet, ball band, or official chart before cutting, mixing, buying, or publishing. Limits of liability are in the terms of service.
The tolerance band is usually gold or silver and sits apart. Read from the other end.
Publisher notes · reviewed 29 October 2026
4-band: two digits, multiplier, tolerance. 5-band adds a third digit. Gold multiplier is 0.1. Brown-black-red-gold is 1 kΩ ±5%. Reverse mode maps a value to digits.
Tolerance gold/silver usually sits apart. Start from the other end.
1 kΩ ±5%
Brown, black, red, gold.
