SMD Resistor Decoder
Decode common three/four-digit, R-decimal and EIA-96 resistor markings.
Numeric 3/4 digits: last digit is multiplier; all zeros mean 0 Ω. R replaces the decimal point in 3/4-character codes. EIA-96 uses 01–96 and Z/Y/X/A/B/C/D/E/F; X/S=0.1, Y/R=0.01 aliases. Select the format explicitly. Nominal resistance only; no tolerance, rating or proprietary-code inference.
R(Ω) = AB × 10^C / ABC × 10^D; R → .; EIA-96: R = T × M
Result
Supported EIA-96 domain table
Letter multipliers: Z = 0.001; Y = 0.01; R = 0.01; X = 0.1; S = 0.1; A = 1; B = 10; C = 100; D = 1000; E = 10000; F = 100000
| Code | Base value | Code | Base value | Code | Base value | Code | Base value |
|---|---|---|---|---|---|---|---|
| 01 | 100 | 25 | 178 | 49 | 316 | 73 | 562 |
| 02 | 102 | 26 | 182 | 50 | 324 | 74 | 576 |
| 03 | 105 | 27 | 187 | 51 | 332 | 75 | 590 |
| 04 | 107 | 28 | 191 | 52 | 340 | 76 | 604 |
| 05 | 110 | 29 | 196 | 53 | 348 | 77 | 619 |
| 06 | 113 | 30 | 200 | 54 | 357 | 78 | 634 |
| 07 | 115 | 31 | 205 | 55 | 365 | 79 | 649 |
| 08 | 118 | 32 | 210 | 56 | 374 | 80 | 665 |
| 09 | 121 | 33 | 215 | 57 | 383 | 81 | 681 |
| 10 | 124 | 34 | 221 | 58 | 392 | 82 | 698 |
| 11 | 127 | 35 | 226 | 59 | 402 | 83 | 715 |
| 12 | 130 | 36 | 232 | 60 | 412 | 84 | 732 |
| 13 | 133 | 37 | 237 | 61 | 422 | 85 | 750 |
| 14 | 137 | 38 | 243 | 62 | 432 | 86 | 768 |
| 15 | 140 | 39 | 249 | 63 | 442 | 87 | 787 |
| 16 | 143 | 40 | 255 | 64 | 453 | 88 | 806 |
| 17 | 147 | 41 | 261 | 65 | 464 | 89 | 825 |
| 18 | 150 | 42 | 267 | 66 | 475 | 90 | 845 |
| 19 | 154 | 43 | 274 | 67 | 487 | 91 | 866 |
| 20 | 158 | 44 | 280 | 68 | 499 | 92 | 887 |
| 21 | 162 | 45 | 287 | 69 | 511 | 93 | 909 |
| 22 | 165 | 46 | 294 | 70 | 523 | 94 | 931 |
| 23 | 169 | 47 | 301 | 71 | 536 | 95 | 953 |
| 24 | 174 | 48 | 309 | 72 | 549 | 96 | 976 |
A QUICK WALKTHROUGH
How to use this tool
- Choose the mode and enter the values.
- Read the formula and limitations before interpreting the result.
Formula and limits
Numeric 3/4 digits: last digit is multiplier; all zeros mean 0 Ω. R replaces the decimal point in 3/4-character codes. EIA-96 uses 01–96 and Z/Y/X/A/B/C/D/E/F; X/S=0.1, Y/R=0.01 aliases. Select the format explicitly. Nominal resistance only; no tolerance, rating or proprietary-code inference. R(Ω) = AB × 10^C / ABC × 10^D; R → .; EIA-96: R = T × M
GOOD TO KNOW
Common questions
Does this evaluate a real component or circuit?
No. This is a nominal calculation from the inputs, not component selection or a safety assessment.