Ohm's Law Calculator
Calculate voltage, current, resistance, or power using Ohm's Law. Enter any two known values and the calculator solves for the third and fourth.
Solve for
Known Values (enter any two)
Power
24 W
Formula used: P = V × I
Formula Reference
V = I × R = P / I = √(P × R)I = V / R = P / V = √(P / R)R = V / I = V² / P = P / I²P = V × I = I² × R = V² / R- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Ohm's Law Calculator really free?
Yes. Ohm's Law Calculator is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Ohm's Law Calculator upload my data?
No. Ohm's Law Calculator runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Ohm's Law Calculator is ready to use on desktop or mobile.
Does Ohm's Law Calculator work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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