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Ohm's Law Calculator

Pick which two values you know, enter them, and the rest are calculated automatically.

Voltage
230.00 V
Current
2.000 A
Resistance
115.00 Ω
Power
460.00 W

This tool gives a quick estimate for planning purposes only — it doesn't account for every site condition (ambient temperature, conduit fill, local code). For a final specification or anything connected to your mains, have it checked by a licensed electrician — talk to us.