Quick guide
Try an example
You enter
- Voltage (V)
12
- Resistance (Ω)
6
You get
- Voltage (V)
12
- Current (A)
2
- Resistance (Ω)
6
- Power (W)
24
How it works and limits
Fill in exactly two fields with positive values. The calculator applies V = I × R and P = V × I.