Resistor Colour Code Calculator

This calculator converts the colour bands which are found on resistors into their values.

colour codes

Code Band Spacer Code Band 1 Code Band Spacer Code Band 2 Code Band Spacer Code Band 3 Code Band Spacer Code Band 4 Code Band Spacer Code Band 5 Code Band Spacer Code Band 6 Code Band Spacer

Resistance = n/a

Tolerance = n/a

Temperature Coefficient = n/a

Prefered Resistor Values

Resistors are available in a number of standard (Prefered) ranges or series and these are: E3, E6, E12, E24, E48 and E96. The E denotes the number of values the series contains per decade.

E3: 50% tolerance
10 22 47
E6: 20% tolerance
10 15 22
33 47 68
E12: 10% tolerance
10 12 15
18 22 27
33 39 47
56 68 82
E24: 5% tolerance
10 11 12
13 15 16
18 20 22
24 27 30
33 36 39
43 47 51
56 62 68
75 82 91
E48: 2% tolerance
100 105 110
115 121 127
133 140 147
154 162 169
178 187 196
205 215 226
237 249 261
274 287 301
316 332 348
365 383 402
422 442 464
487 511 536
562 590 619
649 681 715
750 787 825
866 909 953
E96: 1% tolerance
100 102 105
107 110 113
115 118 121
124 127 130
133 137 140
143 147 150
154 158 162
165 169 174
178 182 187
191 196 200
205 210 216
221 226 232
237 243 249
255 261 267
274 280 287
294 301 309
316 324 332
340 348 357
365 374 383
392 402 412
422 432 442
453 464 475
487 499 511
523 536 549
562 576 590
604 619 634
649 665 681
698 715 732
750 768 787
806 825 845
866 887 909
931 953 976

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