kWh Cost Calculator
Convert kWh into pounds. Enter an amount of electricity, choose the period and add your price per kWh.
Convert kWh to cost
kWh
Find this on your bill or smart meter.
p per kWh
Example rate shown — replace it with the unit rate on your bill.
Estimated electricity cost
£25.00per week
100 kWh used
| Period | Used | Energy | Total |
|---|---|---|---|
| Hour | 0.595 kWh | £0.15 | £0.15 |
| Day | 14.3 kWh | £3.57 | £3.57 |
| Week | 100 kWh | £25.00 | £25.00 |
| Month | 435 kWh | £108.63 | £108.63 |
| Year | 5,214 kWh | £1,303.57 | £1,303.57 |
Results are estimates. Your actual bill depends on your tariff, meter readings and how you use electricity.
kWh to £ in one step
Cost (£) = kWh × price per kWh (p) ÷ 100
If you just want a quick table of prices for common amounts, see electricity cost per kWh.