Work out what your home's energy really costs
Free calculators that use the official price for your region and show every step of the sum.
Electricity costs 26.32p per kWh under the price cap.
pence per kWh, 1 October to 31 December 2026
Great Britain average, paying by Direct Debit. See the price for your region.
Calculators
- Appliance running cost calculator What anything electrical costs to run, by the hour, day and year.
- Energy bill calculator A year's gas and electricity at the price cap for your region.
- EV charging cost calculator What a charge costs at home or away, and the cost per mile.
- Electric car vs petrol running costs What the same miles cost in an electric car and a petrol or diesel one.
- Energy prices by region Unit rates and standing charges for your postcode.
- Fixed energy deal vs the price cap What a fixed deal costs for a year against today's price cap, for your use.
- Gas meter reading to kWh calculator Turn gas meter readings into kWh and cost, for metric and imperial meters.
- Fuel cost calculator What a journey costs in petrol or diesel, at this week's pump prices.
- MPG calculator Your car's real miles per gallon from a fill-up, and the cost a mile.
- EV charging time calculator How long an electric car takes to charge on any charger.
- Plug-in solar calculator What a plug-in or balcony solar panel would make where you live, and what it is worth.
- Solar panel calculator What solar panels on your roof would make in a year, by council area, tilt and direction.
- Radiator size calculator The radiator output a room needs, in watts and BTU, by the MCS heat loss method.
- BTU calculator for a room How many BTU an hour a room needs to stay warm on a cold day.
Guides
- Energy price cap What the cap is now, what it limits and what it means for your bill.
- Warm Homes Plan: grants and loans Which government grants and loans are worth checking for your home.
- Which electric heater is cheapest to run? Why the power matters more than the type, with costs by the hour.
- Appliance running costs What 30 common appliances cost to run.
- Rules and changes Dated changes to prices, grants and rules, with sources.
Converters
- Watts to amps converter Convert between watts and amps at UK mains voltage.
- BTU to kW converter Convert heater and air conditioner output between BTU and kilowatts.
- Watts to kWh converter Turn a power rating and a time into units of electricity.
- kW to amps converter Kilowatts to amps and back, on single or three-phase supplies.
- kW to hp converter Kilowatts to horsepower and back, for cars and motors.
- kVA to kW converter Apparent power to real power with the power factor, for generators and UPS.
- kWh to joules, MJ and therms converter Convert kWh, megajoules, joules, therms and BTU.
What appliances cost to run
What each of these costs an hour, a day and a year at today's price cap, with the sum shown.
- Electric shower
- Immersion heater
- Electric heater
- Oil-filled radiator
- Dehumidifier
- Towel rail
- Heating blanket
- Kettle
- Oven
- Hob
- Grill
- Toaster
- Microwave
- Fridge-freezer
- Freezer
- Fridge
- Extractor fan
- Tumble dryer
- Washing machine
- Iron
- Vacuum cleaner
- Desktop computer
- Games console
- LCD TV
- Laptop
- TV box
- Broadband router
- Hairdryer
- Electric mower
- Light bulb
All running costs in one table
Energy prices now
| Fuel | Unit rate | Standing charge |
|---|---|---|
| Electricity | 26.32p per kWh | 54.83p a day |
| Gas | 7.97p per kWh | 29.68p a day |
Averages for Great Britain, paying by Direct Debit. Source: Ofgem: Energy price cap unit rates and standing charges. Checked 13 November 2026.
Why these calculators are different
Every price comes from a published source such as Ofgem, and we show which one and when we last checked it. Every result has a "Show the workings" button that lists each step of the sum, so you can check it yourself.