Household Electricity Cost Calculator
Use the numbers on your electricity bill to check your household costs and see how they add up over a year.
Household electricity 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.
p per day
Example value — check your bill.
Estimated electricity cost
£71.46per month
225 kWh used, £56.25 energy + £15.21 standing charge
| Period | Used | Energy | Standing | Total |
|---|---|---|---|---|
| Hour | 0.308 kWh | £0.08 | £0.02 | £0.10 |
| Day | 7.4 kWh | £1.85 | £0.50 | £2.35 |
| Week | 51.8 kWh | £12.95 | £3.50 | £16.45 |
| Month | 225 kWh | £56.25 | £15.21 | £71.46 |
| Year | 2,700 kWh | £675.00 | £182.50 | £857.50 |
Results are estimates. Your actual bill depends on your tariff, meter readings and how you use electricity.
Checking your bill step by step
- Note the kWh used and the number of days the bill covers.
- Note your unit rate and standing charge.
- Enter the usage with the matching period and compare the estimate with your bill's electricity total.
If the numbers don't match
Check whether the bill used an estimated reading, whether prices changed during the period, and whether there are credits or adjustments. Our guide on why electricity bills vary covers the common reasons.