Gratuito 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-upsNessun accesso richiestoGratis per sempre
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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Come funziona

1
Inserisci
Inserisci il tuo testo o dati.
2
Elabora
Elaborato istantaneamente nel tuo browser. Nessun server, nessuna attesa.
3
Scarica
Salva il tuo risultato. Nulla viene archiviato.

Perché il nostro?

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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