Resistive voltage divider
Calculates resistors of the voltage divider network automatically. Assumes the required output current to be negligible.
| Example 1: Must calculate the resistors for a 5V to 1.25V voltage divider using 1% resistor series | 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
| Results |
| Division ratio | ~3.577236:1 |
| Resistor R1 | Resistor R2 | Output voltage | Error % | Power loss |
| 16 kilo-ohms | 6.2 kilo-ohms | ~1.228829 volts | ~0.095217% | ~872.072072 microwatts |
| 62 kilo-ohms | 24 kilo-ohms | ~1.227907 volts | ~0.170164% | ~225.116279 microwatts |
| 6.2 kilo-ohms | 2.4 kilo-ohms | ~1.227907 volts | ~0.170164% | ~2.251163 milliwatts |
| 10 kilo-ohms | 3.9 kilo-ohms | ~1.234532 volts | ~0.368486% | ~1.392806 milliwatts |
| 100 kilo-ohms | 39 kilo-ohms | ~1.234532 volts | ~0.368486% | ~139.280576 microwatts |
| 11 kilo-ohms | 4.3 kilo-ohms | ~1.236601 volts | ~0.536692% | ~1.265359 milliwatts |
| 3.9 kilo-ohms | 1.5 kilo-ohms | ~1.222222 volts | ~0.63234% | ~3.585185 milliwatts |
| 39 kilo-ohms | 15 kilo-ohms | ~1.222222 volts | ~0.63234% | ~358.518519 microwatts |
| 12 kilo-ohms | 4.7 kilo-ohms | ~1.238323 volts | ~0.676695% | ~1.159281 milliwatts |
| 51 kilo-ohms | 20 kilo-ohms | ~1.239437 volts | ~0.767205% | ~272.676056 microwatts |
| 5.1 kilo-ohms | 2 kilo-ohms | ~1.239437 volts | ~0.767205% | ~2.726761 milliwatts |
| 13 kilo-ohms | 5.1 kilo-ohms | ~1.239779 volts | ~0.795041% | ~1.069613 milliwatts |
| 5.6 kilo-ohms | 2.2 kilo-ohms | ~1.241026 volts | ~0.896394% | ~2.482051 milliwatts |
| 56 kilo-ohms | 22 kilo-ohms | ~1.241026 volts | ~0.896394% | ~248.205128 microwatts |
| 4.7 kilo-ohms | 1.8 kilo-ohms | ~1.218462 volts | ~0.938086% | ~2.978462 milliwatts |
| 47 kilo-ohms | 18 kilo-ohms | ~1.218462 volts | ~0.938086% | ~297.846154 microwatts |
| 3.3 kilo-ohms | 1.3 kilo-ohms | ~1.243478 volts | ~1.095794% | ~4.208696 milliwatts |
| 33 kilo-ohms | 13 kilo-ohms | ~1.243478 volts | ~1.095794% | ~420.869565 microwatts |
| 91 kilo-ohms | 36 kilo-ohms | ~1.247244 volts | ~1.401959% | ~152.440945 microwatts |
| 9.1 kilo-ohms | 3.6 kilo-ohms | ~1.247244 volts | ~1.401959% | ~1.524409 milliwatts |
| 24 kilo-ohms | 9.1 kilo-ohms | ~1.209668 volts | ~1.653035% | ~584.89426 microwatts |
| 6.8 kilo-ohms | 2.7 kilo-ohms | ~1.250526 volts | ~1.668806% | ~2.037895 milliwatts |
| 68 kilo-ohms | 27 kilo-ohms | ~1.250526 volts | ~1.668806% | ~203.789474 microwatts |
| 18 kilo-ohms | 6.8 kilo-ohms | ~1.206452 volts | ~1.914503% | ~780.645161 microwatts |
| 75 kilo-ohms | 30 kilo-ohms | ~1.257143 volts | ~2.206736% | ~184.380952 microwatts |
| 30 kilo-ohms | 12 kilo-ohms | ~1.257143 volts | ~2.206736% | ~460.952381 microwatts |
| 7.5 kilo-ohms | 3 kilo-ohms | ~1.257143 volts | ~2.206736% | ~1.84381 milliwatts |
| 3 kilo-ohms | 1.2 kilo-ohms | ~1.257143 volts | ~2.206736% | ~4.609524 milliwatts |
| 20 kilo-ohms | 7.5 kilo-ohms | 1.2 volts | ~2.439024% | ~704 microwatts |
| 82 kilo-ohms | 33 kilo-ohms | ~1.262609 volts | ~2.651113% | ~168.347826 microwatts |
| 8.2 kilo-ohms | 3.3 kilo-ohms | ~1.262609 volts | ~2.651113% | ~1.683478 milliwatts |
| 15 kilo-ohms | 5.6 kilo-ohms | ~1.196117 volts | ~2.754756% | ~939.805825 microwatts |
| 22 kilo-ohms | 8.2 kilo-ohms | ~1.194702 volts | ~2.869757% | ~641.059603 microwatts |
| 4.3 kilo-ohms | 1.6 kilo-ohms | ~1.19322 volts | ~2.990216% | ~3.281356 milliwatts |
| 43 kilo-ohms | 16 kilo-ohms | ~1.19322 volts | ~2.990216% | ~328.135593 microwatts |
| 2.7 kilo-ohms | 1 kilo-ohms | ~1.189189 volts | ~3.317952% | ~5.232432 milliwatts |
| 27 kilo-ohms | 10 kilo-ohms | ~1.189189 volts | ~3.317952% | ~523.243243 microwatts |
| 2.7 kilo-ohms | 1.1 kilo-ohms | ~1.273684 volts | ~3.551562% | ~5.094737 milliwatts |
| 27 kilo-ohms | 11 kilo-ohms | ~1.273684 volts | ~3.551562% | ~509.473684 microwatts |
| 20 kilo-ohms | 8.2 kilo-ohms | ~1.279433 volts | ~4.018913% | ~686.524823 microwatts |
| 30 kilo-ohms | 11 kilo-ohms | ~1.180488 volts | ~4.025382% | ~472.195122 microwatts |
| 3 kilo-ohms | 1.1 kilo-ohms | ~1.180488 volts | ~4.025382% | ~4.721951 milliwatts |
| 39 kilo-ohms | 16 kilo-ohms | 1.28 volts | ~4.065041% | ~352 microwatts |
| 3.9 kilo-ohms | 1.6 kilo-ohms | 1.28 volts | ~4.065041% | 3.52 milliwatts |
| 8.2 kilo-ohms | 3 kilo-ohms | ~1.178571 volts | ~4.181185% | ~1.728571 milliwatts |
| 82 kilo-ohms | 30 kilo-ohms | ~1.178571 volts | ~4.181185% | ~172.857143 microwatts |
| 33 kilo-ohms | 12 kilo-ohms | ~1.173333 volts | ~4.607046% | ~430.222222 microwatts |
| 3.3 kilo-ohms | 1.2 kilo-ohms | ~1.173333 volts | ~4.607046% | ~4.302222 milliwatts |
| 15 kilo-ohms | 6.2 kilo-ohms | ~1.286792 volts | ~4.617273% | ~913.207547 microwatts |
| 22 kilo-ohms | 9.1 kilo-ohms | ~1.28746 volts | ~4.671529% | ~622.508039 microwatts |
