kWh to kW Calculator
Convert kWh to kW by averaging the energy over the hours it took. WattSimple goes one step further and separates average demand from the peak a demand meter actually bills — the distinction that makes commercial electricity bills confusing.
730 h ≈ one billing month · 24 h = one day
Energy charge vs demand charge
Commercial tariffs only — set to 0 for residential
Averaging kWh over a period gives average kW, not billed demand. A demand meter records the highest 15-minute interval in the billing period, so the number that gets charged is a multiple of the average — typically 2× to 3× for a commercial site with normal load variation.
Average power
1.233 kW
- Energy
- 900 kWh
- Average demand
- 1.233 kW
- Likely billed peak
- 3.08 kW
- Energy charge
- $153
- Demand charge
- $46.23
- Total
- $199.23
Rates and demand charges are user inputs because both vary by utility and tariff — check your bill for the figures that apply to you. Default energy rates come from the EIA state averages.
Frequently asked questions
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Open converterSources & standards
This tool's methodology and data follow US standards and authoritative public datasets: