Doan Ohm's Law Calculator

Enter any two of voltage, current, resistance, and power — the other two are solved instantly using Ohm's law (V=IR) and the power equation (P=VI).

Runs in your browserNo sign-up, no pop-upsEz da saioa hasi beharBetiko libre
V
A
Ω
W
Enter any two values and the other two are solved automatically

💡 Ohm's law: V = I × R. Power adds P = V × I. Knowing any two lets you derive the rest — handy for sizing resistors, checking LED current, or working out heat dissipation.

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1
Sartu
Sartu zure testua edo datuak.
2
Prozesua
Berehala prozesatu da zure arakatzailean. Ez zerbitzaririk, ez itxaroterik.
3
Deskargatu
Gorde zure emaitza. Ez da ezer gordetzen.

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Completely free — no hidden costs, ever
No account, email, or login required
Runs entirely in your browser — no uploads
Works on any device — phone, tablet, desktop
Open and ad-supported, with no tracking
Loads fast, with no installation needed

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