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Inductor Code Calculator

Decode SMD codes and color bands to inductance values

101
100 µH
Tolerance: ±10%
100,000
nH
100
μH
0.1
mH

Common SMD Codes

Click to try:

1R0
1 µH
2R2
2.2 µH
4R7
4.7 µH
100
10 µH
101
100 µH
102
1 mH
220
22 µH
221
220 µH
470
47 µH
471
470 µH
1001
1 mH
1002
10 mH

How SMD Codes Work

SMD inductor codes represent inductance in microhenries (µH):

Example: 101 = 10 × 101 = 100 µH

Color Code Reference

Inductors use the same color code as resistors, with value in µH:

Color Digit Multiplier Tolerance
Black 0 ×1 -
Brown 1 ×10 ±1%
Red 2 ×100 ±2%
Orange 3 ×1,000 -
Yellow 4 ×10,000 -
Green 5 ×100,000 ±0.5%
Blue 6 ×1,000,000 ±0.25%
Violet 7 - ±0.1%
Grey 8 - -
White 9 - -
Gold - ×0.1 ±5%
Silver - ×0.01 ±10%

Tolerance Codes

Letter Tolerance
F±1%
G±2%
J±5%
K±10%
M±20%