Resistance Calculator (R = V / I)
Calculate resistance from voltage and current using Ohm's Law (R = V / I). Free, instant, with power dissipation.
Resistance Calculator (R = V / I)
Voltage UV
Current IA
Resistance
6Ω
Voltage
12V
Current
2A
Resistance
6Ω
Power
24W
More about: Resistance Calculator (R = V / I)
What it calculates
The “Resistance Calculator (R = V / I)” calculator computes Resistance in Ω from 2 parameters: voltage u (V), current i (A).
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Voltage U = 12 V, Current I = 2 A the result is 6 Ω (R = U / I).
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.