What is the formula used?

The formula is V = (kWh × 1000) / (A × h). It comes from rearranging P = V × I (power equals voltage times current) and E = P × t (energy equals power times time) to solve for V.

Why multiply kWh by 1000?

Kilowatt-hours must be converted to watt-hours first (1 kWh = 1,000 Wh) so that units are consistent. The formula then yields volts when current is in amps and time is in hours.

Can I use this for AC and DC circuits?

Yes for DC circuits and purely resistive single-phase AC circuits with a unity power factor (PF = 1.0). For AC loads with power factor below 1.0, divide by the power factor: V = (kWh × 1000) / (A × h × PF). Three-phase AC systems also require a √3 phase correction factor.

What happens if I enter zero for amps or hours?

Division by zero is undefined. The calculator will display an error message if either amperes or hours is zero or negative. Enter positive non-zero values for both fields.

Is this the same as Ohm's Law?

Ohm's Law (V = I × R) relates voltage, current, and resistance. This calculator uses the energy relationship V = (kWh × 1000) / (A × h), which involves time and energy rather than resistance.

Kilowatt Hours to Volts Calculator

Convert kilowatt-hours, amps, and hours to volts using V = (kWh × 1000) / (A × h).

Input Values

Energy (kWh)

kWh

Current (A)

Time (h)

Result

Enter values on the left and press Calculate.

Quick Examples

Summary

This calculator converts kilowatt-hours (kWh) of electrical energy to volts by dividing the total energy by the product of current and time. The formula V = (kWh × 1000) / (A × h) rearranges the standard power relationship to solve for voltage given energy consumption data in DC circuits or AC circuits with unity power factor (PF = 1.0). It is useful for sizing batteries, evaluating generator output, and analyzing power system parameters.

How it works

Enter the energy value in kilowatt-hours (kWh) in the first field.
Enter the current in amperes (A) in the second field.
Enter the time duration in hours (h) in the third field.
The calculator applies V = (kWh × 1000) / (A × h) and displays the voltage.
Copy the result or adjust inputs to explore different scenarios.

Use cases

Determine nominal voltage of a battery bank from capacity data.
Size electrical conductors and components for a given energy load.
Verify generator output voltage from energy meter readings.
Convert energy audit data into voltage parameters for system design.
Calculate operating voltage for solar and off-grid power systems.
Cross-check metered energy consumption against rated voltage.
Support homework and exam problems in electrical engineering courses.
Quickly validate vendor specs for industrial power equipment.

Frequently Asked Questions

Last updated: 2026-05-23 · Reviewed by Nham Vu