1 kΩ
- Input
- 1k
- Expected output
- brown-black-red-gold
1,000 = 10 × 100, so brown (1), black (0), red (×100).
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resistor value to color code
When you have the value and need the colors, the path runs backwards: split the significant figures from the multiplier and translate each into a band. The calculator works both ways, and opens here with 3.3 kΩ as orange, orange, red, gold, ready for you to type another value.
1,000 = 10 × 100, so brown (1), black (0), red (×100).
2,200 = 22 × 100, three reds in a row: two digits and the multiplier.
47,000 = 47 × 1,000, with orange as the multiplier.
1,000,000 = 10 × 100,000, and green is ×100,000.
4.7 = 47 × 0.1, so gold takes the multiplier position.
0.47 = 47 × 0.01, and silver is the ×0.01 multiplier.
Start from the end opposite the tolerance band. The tolerance band is usually gold or silver (or visibly set apart from the rest with a wider gap), so it's always read last, and tells you which end to begin at.
Write the value as two digits times a power of ten, then swap each digit and the power for its color. 33 × 100 becomes orange, orange, red.
Because it needs three figures (475) and four bands hold only two. The closest rounding is 4.8 kΩ, about +1.05%. With five bands it fits: yellow, violet, green, brown.
Use gold (×0.1) or silver (×0.01) in the multiplier slot. 6.8 Ω, for instance, is 68 × 0.1: blue, grey, gold.
In the E12 and E24 series it is 4.7 kΩ. The E96 series includes 4.75 kΩ itself, and the calculator shows the neighbors above and below for all three series.
This is a standard E24 value (typical tolerance ±5%).
Lookup and calculation happen locally in your browser; no color or value is ever sent to a server.