General tools
kWh To Pence Calculator UK
Use this when an appliance label or smart meter already gives consumption in kWh.
Estimated running cost
- Per hour
- 24.67p
- Per day
- 24.67p
- Per week
- £1.73
- Per month
- £7.40
- Per year
- £90.05
Formula: kWh used × electricity price per kWh.
Cost table
| Scenario | Power | Use time | Cost at 24.67p/kWh |
|---|---|---|---|
| 0.5 kWh equivalent | 500W | 1 hours | 12.34p |
| 1 kWh equivalent | 1,000W | 1 hours | 24.67p |
| 2 kWh equivalent | 2,000W | 1 hours | 49.34p |
| 5 kWh equivalent | 5,000W | 1 hours | £1.23 |
Formula
kWh used × electricity price per kWh = running cost
For example, a 1,000W electricity use used for 1 hour at 24.67p/kWh costs 1 x 1 x 24.67p = 24.67p.
Ways to reduce the cost
- Use annual kWh labels to estimate yearly appliance cost.
- Multiply by your own tariff for the most accurate figure.
- Compare kWh rather than wattage alone when buying appliances.
- Track repeat uses, not just one-off costs.
FAQs
How much is 1 kWh in the UK?
Using the current average electricity rate here, 1 kWh is 24.67p.
What is 2 kWh in pounds?
At 24.67p/kWh, 2 kWh is about 49p.
Is kWh the same as kW?
No. kW is power; kWh is power used over time.
Can I use this for gas?
This calculator is for electricity. Gas has a different unit rate and appliance efficiency matters.
Last reviewed 3 May 2026. Source: Ofgem energy price cap. Figures are estimates. Actual prices vary by region, supplier, tariff, payment method and meter type.