Question 1

UK average unit rate?

Accepted Answer

~24–26p/kWh under the 2025–26 price cap. A 2kW heater 3h/day at 25p = ~£45/month.

Question 2

What uses most electricity at home?

Accepted Answer

Heating/hot water, tumble dryers and electric showers dominate; standby and lighting are minor by comparison.

Question 3

Is the kWh Cost Calculator free to use?

Accepted Answer

Yes — completely free, no signup, no account. It runs instantly in your browser and you can use it as often as you like.

Question 4

Is the kWh Cost Calculator accurate?

Accepted Answer

Results use standard published formulas and current rates where applicable. They're accurate for the inputs given, but always verify figures that affect real money or decisions — rates change and edge cases exist.

Question 5

Do you store the numbers I enter?

Accepted Answer

No. Everything is calculated in your browser — nothing is sent to or stored on our servers.

Question 6

Can I use this on my phone?

Accepted Answer

Yes — the calculator is fully responsive and works on mobile, tablet and desktop.

kWh Cost Calculator

Result

kWh Cost Calculator — FAQs

UK average unit rate?

What uses most electricity at home?

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