Resistor finder
Finds a combination of two series or parallel connected resistors for a custom value. Returns a list of the best values found.
| Example 1: Must calculate the combination of 1% resistors to produce a resistance of 66 kilo-ohms | View example |
You may use one of the following SI prefix after a value: p=pico, n=nano, u=micro, m=milli, k=kilo, M=mega, G=giga
| Configuration | Resistor R1 | Resistor R2 | Total resistance | Error-% |
| Parallel | 1.1 kilo-ohms | 110 ohms | 100 ohms | 0% |
| Parallel | 300 ohms | 150 ohms | 100 ohms | 0% |
| Parallel | 200 ohms | 200 ohms | 100 ohms | 0% |
| Series | 82 ohms | 18 ohms | 100 ohms | 0% |
| Parallel | 9.1 megaohms | 100 ohms | ~99.998901 ohms | ~-0.001% |
| Parallel | 8.2 megaohms | 100 ohms | ~99.998781 ohms | ~-0.001% |
| Parallel | 7.5 megaohms | 100 ohms | ~99.998667 ohms | ~-0.001% |
| Parallel | 6.8 megaohms | 100 ohms | ~99.998529 ohms | ~-0.001% |
| Parallel | 6.2 megaohms | 100 ohms | ~99.998387 ohms | ~-0.002% |
| Parallel | 5.6 megaohms | 100 ohms | ~99.998214 ohms | ~-0.002% |
| Parallel | 5.1 megaohms | 100 ohms | ~99.998039 ohms | ~-0.002% |
| Parallel | 4.7 megaohms | 100 ohms | ~99.997872 ohms | ~-0.002% |
| Parallel | 4.3 megaohms | 100 ohms | ~99.997674 ohms | ~-0.002% |
| Parallel | 3.9 megaohms | 100 ohms | ~99.997436 ohms | ~-0.003% |
| Parallel | 3.6 megaohms | 100 ohms | ~99.997222 ohms | ~-0.003% |
| Parallel | 3.3 megaohms | 100 ohms | ~99.99697 ohms | ~-0.003% |
| Parallel | 3 megaohms | 100 ohms | ~99.996667 ohms | ~-0.003% |
| Parallel | 2.7 megaohms | 100 ohms | ~99.996296 ohms | ~-0.004% |
| Parallel | 2.4 megaohms | 100 ohms | ~99.995834 ohms | ~-0.004% |
| Parallel | 2.2 megaohms | 100 ohms | ~99.995455 ohms | ~-0.005% |
| Parallel | 2 megaohms | 100 ohms | ~99.995 ohms | ~-0.005% |
| Parallel | 1.8 megaohms | 100 ohms | ~99.994445 ohms | ~-0.006% |
| Parallel | 1.6 megaohms | 100 ohms | ~99.99375 ohms | ~-0.006% |
| Parallel | 1.5 megaohms | 100 ohms | ~99.993334 ohms | ~-0.007% |
| Parallel | 1.3 megaohms | 100 ohms | ~99.992308 ohms | ~-0.008% |
| Parallel | 1.2 megaohms | 100 ohms | ~99.991667 ohms | ~-0.008% |
| Parallel | 1.1 megaohms | 100 ohms | ~99.99091 ohms | ~-0.009% |
| Parallel | 1 megaohms | 100 ohms | ~99.990001 ohms | ~-0.01% |
| Parallel | 910 kilo-ohms | 100 ohms | ~99.989012 ohms | ~-0.011% |
| Parallel | 820 kilo-ohms | 100 ohms | ~99.987806 ohms | ~-0.012% |
| Parallel | 750 kilo-ohms | 100 ohms | ~99.986668 ohms | ~-0.013% |
| Parallel | 680 kilo-ohms | 100 ohms | ~99.985296 ohms | ~-0.015% |
| Parallel | 620 kilo-ohms | 100 ohms | ~99.983874 ohms | ~-0.016% |
| Parallel | 560 kilo-ohms | 100 ohms | ~99.982146 ohms | ~-0.018% |
| Parallel | 510 kilo-ohms | 100 ohms | ~99.980396 ohms | ~-0.02% |
| Parallel | 470 kilo-ohms | 100 ohms | ~99.978728 ohms | ~-0.021% |
| Parallel | 430 kilo-ohms | 100 ohms | ~99.97675 ohms | ~-0.023% |
| Parallel | 390 kilo-ohms | 100 ohms | ~99.974366 ohms | ~-0.026% |
| Parallel | 360 kilo-ohms | 100 ohms | ~99.97223 ohms | ~-0.028% |
| Parallel | 330 kilo-ohms | 100 ohms | ~99.969706 ohms | ~-0.03% |
| Parallel | 300 kilo-ohms | 100 ohms | ~99.966678 ohms | ~-0.033% |
| Parallel | 270 kilo-ohms | 100 ohms | ~99.962977 ohms | ~-0.037% |
| Parallel | 240 kilo-ohms | 100 ohms | ~99.958351 ohms | ~-0.042% |
| Parallel | 220 kilo-ohms | 100 ohms | ~99.954566 ohms | ~-0.045% |
| Parallel | 200 kilo-ohms | 100 ohms | ~99.950025 ohms | ~-0.05% |
| Parallel | 180 kilo-ohms | 100 ohms | ~99.944475 ohms | ~-0.056% |
| Parallel | 160 kilo-ohms | 100 ohms | ~99.937539 ohms | ~-0.062% |
| Parallel | 150 kilo-ohms | 100 ohms | ~99.933378 ohms | ~-0.067% |
| Parallel | 130 kilo-ohms | 100 ohms | ~99.923136 ohms | ~-0.077% |
| Parallel | 120 kilo-ohms | 100 ohms | ~99.916736 ohms | ~-0.083% |
| Parallel | 110 kilo-ohms | 100 ohms | ~99.909173 ohms | ~-0.091% |
| Parallel | 100 kilo-ohms | 100 ohms | ~99.9001 ohms | ~-0.1% |
| Series | 91 ohms | 9.1 ohms | 100.1 ohms | 0.1% |
| Parallel | 91 kilo-ohms | 100 ohms | ~99.890231 ohms | ~-0.11% |
| Parallel | 82 kilo-ohms | 100 ohms | ~99.878197 ohms | ~-0.122% |
| Parallel | 75 kilo-ohms | 100 ohms | ~99.866844 ohms | ~-0.133% |
| Parallel | 68 kilo-ohms | 100 ohms | ~99.853157 ohms | ~-0.147% |
| Parallel | 62 kilo-ohms | 100 ohms | ~99.838969 ohms | ~-0.161% |
| Parallel | 56 kilo-ohms | 100 ohms | ~99.821747 ohms | ~-0.178% |
| Parallel | 430 ohms | 130 ohms | ~99.821429 ohms | ~-0.179% |
| Parallel | 51 kilo-ohms | 100 ohms | ~99.804305 ohms | ~-0.196% |
| Parallel | 47 kilo-ohms | 100 ohms | ~99.787686 ohms | ~-0.212% |
| Parallel | 43 kilo-ohms | 100 ohms | ~99.767981 ohms | ~-0.232% |
| Parallel | 39 kilo-ohms | 100 ohms | ~99.744246 ohms | ~-0.256% |
| Parallel | 36 kilo-ohms | 100 ohms | ~99.722992 ohms | ~-0.277% |
| Parallel | 33 kilo-ohms | 100 ohms | ~99.697885 ohms | ~-0.302% |
| Parallel | 30 kilo-ohms | 100 ohms | ~99.667774 ohms | ~-0.332% |
| Parallel | 27 kilo-ohms | 100 ohms | ~99.630996 ohms | ~-0.369% |
| Parallel | 24 kilo-ohms | 100 ohms | ~99.585062 ohms | ~-0.415% |
| Parallel | 22 kilo-ohms | 100 ohms | ~99.547511 ohms | ~-0.452% |
| Parallel | 270 ohms | 160 ohms | ~100.465116 ohms | ~0.465% |
| Parallel | 20 kilo-ohms | 100 ohms | ~99.502488 ohms | ~-0.498% |
| Parallel | 620 ohms | 120 ohms | ~100.540541 ohms | ~0.541% |
| Parallel | 18 kilo-ohms | 100 ohms | ~99.447514 ohms | ~-0.552% |
| Parallel | 16 kilo-ohms | 100 ohms | ~99.378882 ohms | ~-0.621% |
| Parallel | 15 kilo-ohms | 100 ohms | ~99.337748 ohms | ~-0.662% |
| Parallel | 1.2 kilo-ohms | 110 ohms | ~100.763359 ohms | ~0.763% |
| Parallel | 13 kilo-ohms | 100 ohms | ~99.236641 ohms | ~-0.763% |
