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 | ~2.824859:1 |
| Resistor R1 | Resistor R2 | Output voltage | Error % | Power loss |
| 15 kilo-ohms | 8.2 kilo-ohms | ~2.12069 volts | ~0.155854% | ~1.551724 milliwatts |
| 2 kilo-ohms | 1.1 kilo-ohms | ~2.129032 volts | ~0.236924% | ~11.612903 milliwatts |
| 20 kilo-ohms | 11 kilo-ohms | ~2.129032 volts | ~0.236924% | ~1.16129 milliwatts |
| 22 kilo-ohms | 12 kilo-ohms | ~2.117647 volts | ~0.299103% | ~1.058824 milliwatts |
| 33 kilo-ohms | 18 kilo-ohms | ~2.117647 volts | ~0.299103% | ~705.882353 microwatts |
| 3.3 kilo-ohms | 1.8 kilo-ohms | ~2.117647 volts | ~0.299103% | ~7.058824 milliwatts |
| 2.2 kilo-ohms | 1.2 kilo-ohms | ~2.117647 volts | ~0.299103% | ~10.588235 milliwatts |
| 24 kilo-ohms | 13 kilo-ohms | ~2.108108 volts | ~0.748206% | ~972.972973 microwatts |
| 2.4 kilo-ohms | 1.3 kilo-ohms | ~2.108108 volts | ~0.748206% | ~9.72973 milliwatts |
| 3.6 kilo-ohms | 2 kilo-ohms | ~2.142857 volts | ~0.887813% | ~6.428571 milliwatts |
| 1.8 kilo-ohms | 1 kilo-ohms | ~2.142857 volts | ~0.887813% | ~12.857143 milliwatts |
| 2.7 kilo-ohms | 1.5 kilo-ohms | ~2.142857 volts | ~0.887813% | ~8.571429 milliwatts |
| 18 kilo-ohms | 10 kilo-ohms | ~2.142857 volts | ~0.887813% | ~1.285714 milliwatts |
| 36 kilo-ohms | 20 kilo-ohms | ~2.142857 volts | ~0.887813% | ~642.857143 microwatts |
| 27 kilo-ohms | 15 kilo-ohms | ~2.142857 volts | ~0.887813% | ~857.142857 microwatts |
| 4.3 kilo-ohms | 2.4 kilo-ohms | ~2.149254 volts | ~1.18897% | ~5.373134 milliwatts |
| 43 kilo-ohms | 24 kilo-ohms | ~2.149254 volts | ~1.18897% | ~537.313433 microwatts |
| 10 kilo-ohms | 5.6 kilo-ohms | ~2.153846 volts | ~1.405186% | ~2.307692 milliwatts |
| 100 kilo-ohms | 56 kilo-ohms | ~2.153846 volts | ~1.405186% | ~230.769231 microwatts |
| 91 kilo-ohms | 51 kilo-ohms | ~2.15493 volts | ~1.456195% | ~253.521127 microwatts |
| 9.1 kilo-ohms | 5.1 kilo-ohms | ~2.15493 volts | ~1.456195% | ~2.535211 milliwatts |
| 56 kilo-ohms | 30 kilo-ohms | ~2.093023 volts | ~1.458415% | ~418.604651 microwatts |
| 5.6 kilo-ohms | 3 kilo-ohms | ~2.093023 volts | ~1.458415% | ~4.186047 milliwatts |
| 30 kilo-ohms | 16 kilo-ohms | ~2.086957 volts | ~1.744043% | ~782.608696 microwatts |
| 3 kilo-ohms | 1.6 kilo-ohms | ~2.086957 volts | ~1.744043% | ~7.826087 milliwatts |
| 11 kilo-ohms | 6.2 kilo-ohms | ~2.162791 volts | ~1.826304% | ~2.093023 milliwatts |
| 6.2 kilo-ohms | 3.3 kilo-ohms | ~2.084211 volts | ~1.873327% | ~3.789474 milliwatts |
| 62 kilo-ohms | 33 kilo-ohms | ~2.084211 volts | ~1.873327% | ~378.947368 microwatts |
| 3.9 kilo-ohms | 2.2 kilo-ohms | ~2.163934 volts | ~1.880152% | ~5.901639 milliwatts |
| 39 kilo-ohms | 22 kilo-ohms | ~2.163934 volts | ~1.880152% | ~590.163934 microwatts |
| 12 kilo-ohms | 6.8 kilo-ohms | ~2.170213 volts | ~2.175742% | ~1.914894 milliwatts |
| 68 kilo-ohms | 36 kilo-ohms | ~2.076923 volts | ~2.216428% | ~346.153846 microwatts |
| 51 kilo-ohms | 27 kilo-ohms | ~2.076923 volts | ~2.216428% | ~461.538462 microwatts |
| 6.8 kilo-ohms | 3.6 kilo-ohms | ~2.076923 volts | ~2.216428% | ~3.461538 milliwatts |
| 5.1 kilo-ohms | 2.7 kilo-ohms | ~2.076923 volts | ~2.216428% | ~4.615385 milliwatts |
| 16 kilo-ohms | 9.1 kilo-ohms | ~2.175299 volts | ~2.415198% | ~1.434263 milliwatts |
| 8.2 kilo-ohms | 4.3 kilo-ohms | 2.064 volts | ~2.824859% | 2.88 milliwatts |
| 82 kilo-ohms | 43 kilo-ohms | 2.064 volts | ~2.824859% | 288 microwatts |
| 8.2 kilo-ohms | 4.7 kilo-ohms | ~2.186047 volts | ~2.921211% | ~2.790698 milliwatts |
| 82 kilo-ohms | 47 kilo-ohms | ~2.186047 volts | ~2.921211% | ~279.069767 microwatts |
| 7.5 kilo-ohms | 4.3 kilo-ohms | ~2.186441 volts | ~2.939768% | ~3.050847 milliwatts |
| 75 kilo-ohms | 43 kilo-ohms | ~2.186441 volts | ~2.939768% | ~305.084746 microwatts |
| 68 kilo-ohms | 39 kilo-ohms | ~2.186916 volts | ~2.962142% | ~336.448598 microwatts |
| 6.8 kilo-ohms | 3.9 kilo-ohms | ~2.186916 volts | ~2.962142% | ~3.364486 milliwatts |
| 13 kilo-ohms | 6.8 kilo-ohms | ~2.060606 volts | ~2.984649% | ~1.818182 milliwatts |
| 4.7 kilo-ohms | 2.7 kilo-ohms | ~2.189189 volts | ~3.069171% | ~4.864865 milliwatts |
| 47 kilo-ohms | 27 kilo-ohms | ~2.189189 volts | ~3.069171% | ~486.486486 microwatts |
| 13 kilo-ohms | 7.5 kilo-ohms | ~2.195122 volts | ~3.348491% | ~1.756098 milliwatts |
| 75 kilo-ohms | 39 kilo-ohms | ~2.052632 volts | ~3.360095% | ~315.789474 microwatts |
| 7.5 kilo-ohms | 3.9 kilo-ohms | ~2.052632 volts | ~3.360095% | ~3.157895 milliwatts |
