REKON TECHNOLOGY

Ohm's Law Calculator

Calculate voltage, current, resistance, and power for low-voltage and electrical circuits.

V = I × R

INPUTS

Enter any two values

Common voltage preset

Voltage V

Current I

Resistance R

Leave one field blank. The calculator will solve for the missing value.

RESULTS

Ready

Enter any two values to begin.

Voltage — Volts

Current — Amps

Resistance — Ohms

Power — Watts

Kilowatts —

Volt-Amps —

Heat Output —

Estimated Fuse —

FORMULA USED

Enter two values to calculate. V = I × R

Voltage: V = I × R

Current: I = V ÷ R

Resistance: R = V ÷ I

Power: P = V × I

Power: P = I² × R

Power: P = V² ÷ R

Fuse recommendations are estimates only. Always follow equipment manufacturer instructions, applicable codes, and conductor ampacity requirements.