Voltage Conversions
Part of the Circuitbuilding Do-It-Yourself For Dummies Cheat Sheet
Here are some handy mathematical formulas to help you figure out what those waveforms mean, and how to convert them to other measurements, when you're measuring voltage in your batteries or other electronic devices.
| Sine or square wave | VPEAK-TO-PEAK = 2 × VPEAK |
| Sine wave | VRMS = 0.707 × VPEAK, VPEAK = 1.414 × VRMS |
| Square wave | VRMS = VPEAK |
| Power to decibels | dB = 10 log10 (Power 1 / Power 2) |
| Voltage to decibels | dB = 20 log10 (Voltage 1 / Voltage 2) |
| Decibels to power | Power 1 = Power 2 × antilog10 (dB / 10) |
| Decibels to voltage | Voltage 1 = Voltage 2 × antilog10 (dB / 20) |
