Current Calculator (I = V / R)
Calculate electric current from voltage and resistance using Ohm's Law (I = V / R). Free online calculator with power output.
Current Calculator (I = V / R)
Voltage UV
Resistance RΩ
Current
0.12A
Voltage
12V
Resistance
100Ω
Current
0,12A
Power draw
1,44W
More about: Current Calculator (I = V / R)
What it calculates
The “Current Calculator (I = V / R)” calculator computes Current in A from 2 parameters: voltage u (V), resistance r (Ω).
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Voltage U = 12 V, Resistance R = 100 Ω the result is 0.12 A (I = U / R).
How to use
- Enter voltage u and resistance r — each field above is adjustable with a slider.
- Current (A) 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.
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FAQ
How is Current Calculator (I = V / R) calculated?
The Current Calculator (I = V / R) calculator computes Current (in A) from voltage u, resistance r. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Current Calculator (I = V / R) calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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