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 draw
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 voltage u and current i — each field above is adjustable with a slider.
- Resistance (Ω) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
Related calculators
FAQ
How is Resistance Calculator (R = V / I) calculated?
The Resistance Calculator (R = V / I) calculator computes Resistance (in Ω) from voltage u, current i. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Resistance Calculator (R = V / I) calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
More calculators in this category
Explore related free tools