Kilowatt-hours to Kilowatts Calculator
Convert energy in kilowatt-hours (kWh) to power in kilowatts (kW). Enter the energy consumed and the time period it was consumed over, and press Calculate to get the average power draw in kW. Everything runs locally in your browser.
Enter the energy
Type the energy consumption in kilowatt-hours (kWh) — the number on your electricity meter or bill for the period you care about.
Enter the time period
Type the consumption time period in hours (h) — e.g. 24 for one day or 720 for a 30-day month. Any positive duration works, including fractions of an hour like 0.5.
Press Calculate, read kW
The average power P in kilowatts appears instantly: P(kW) = E(kWh) ÷ t(h). Press Reset to clear all fields and start over.
KWh to kW calculation
- How do you convert kWh to kW?
- The power P in kilowatts (kW) is equal to the energy E in kilowatt-hours (kWh), divided by the consumption time period t in hours (h): P(kW) = E(kWh) / t(h). For example, 3 kWh consumed over 5 hours gives 3 / 5 = 0.6 kW.
- What does the result actually mean?
- It is the average power over the time period, not an instantaneous reading. A device that uses 10.8 kWh in 12 hours drew 10.8 / 12 = 0.9 kW on average — its real draw at any moment may have been higher or lower.
- A worked example for a whole month?
- A household that consumes 720 kWh in a 30-day month (720 h) averaged 720 / 720 = 1 kW continuous. The same 720 kWh compressed into 300 h of operation would mean 720 / 300 = 2.4 kW average while running.
- Can I use time periods shorter than an hour?
- Yes — hours are the unit, not a minimum. 2.4 kWh used in 0.5 h gives 2.4 / 0.5 = 4.8 kW. Minutes just need converting to hours first (30 min = 0.5 h, 15 min = 0.25 h).
- What is a kilowatt-hour?
- A kilowatt-hour is the energy consumed by a 1 kW load running for 1 hour. That is exactly why dividing kWh by hours returns kW: energy = power × time, so power = energy ÷ time.
Privacy: every calculation runs in your browser tab — no value you type is sent anywhere. Results are averages over the period you enter; check nameplate or meter data for instantaneous power.