Electricity Cost Calculator
Estimate energy use and its charge using your own electricity rate.
Formula
kWh = W × hours/day × days / 1000; cost = kWh × rate
Operating power: 1,000 W · Energy (kWh) ≈ (1,000 W)×(4)×(30)÷1000 · Usage cost ≈ (120)×(0.2)
How to use
- Enter average power while operating.
- Set daily hours, days and your rate per kWh.
- Read consumption and the usage charge.
Examples
- 1 kW × 4 h/day × 30 days = 120 kWh; at 0.2 per kWh, cost is 24.
Frequently asked questions
Which currency is used?
The result uses the same currency as your entered rate. The default is only an example.
Does it include the entire bill?
No. Fixed charges, taxes and tiered or time-based rates are excluded.
What if the appliance cycles on and off?
Use average operating watts or adjust the hours to its actual run time.
Sources
Updated: