⚡ Electrical Engineering
Current Calculator
Calculate electrical current, voltage, resistance, and power using Ohm's Law.
Calculation Mode
Select which two values you want to enter
Voltage (V)
V
Voltage in volts (V)
Current (I)
A
Current in amperes (A)
Resistance (R)
Ω
Resistance in ohms (Ω)
Power (P)
W
Power in watts (W)
Power
0%
Power (P)
0 W
calculated power
Voltage
0 V
Current
0 A
Resistance
0 Ω
Mode
V, I → R, P
📐 Ohm's Law Formulas
V = I × R
Voltage = Current × Resistance
I = V ÷ R
Current = Voltage ÷ Resistance
R = V ÷ I
Resistance = Voltage ÷ Current
P = V × I
Power = Voltage × Current
📊 Calculation Breakdown
| Parameter | Value | Formula |
|---|
How the formula works
V = I × R | I = V ÷ R | R = V ÷ I | P = V × I
- Ohm's Law = V = I × R — Voltage = Current × Resistance
- Current = V ÷ R — Current = Voltage ÷ Resistance
- Resistance = V ÷ I — Resistance = Voltage ÷ Current
- Power = V × I — Power = Voltage × Current
- Select a mode to choose which two values to enter