Free energy bill calculators for UK homes. Find out what an appliance costs to run, compare a heat pump with a gas boiler, test Economy 7 savings, size solar panels and estimate your annual bill from your own unit rates and standing charges.
In This Guide
Quick picks
Not sure where to start? These are the tools people use most in this category.
| I want to | Use this tool |
|---|---|
| Cost to run an appliance | Electricity Cost Calculator |
| Heat pump against a gas boiler | Heat Pump Running Cost Calculator |
| Estimate a yearly bill | Energy Bill Calculator |
| Test an Economy 7 tariff | Economy 7 Savings Calculator |
Running costs and bills
4Turn kWh and unit rates into pounds and pence.
Heating and renewables
2Compare low carbon options for your home.
Household bills
1Other regular household costs.
Frequently asked questions
Which unit rates do the calculators use?
You can enter the unit rate and standing charge from your own bill. Where a default is shown, it is based on the current Ofgem price cap and is labelled on the tool.
How do I find my unit rate?
Your unit rate in pence per kWh and your daily standing charge are printed on your energy bill and shown in your supplier app.
Do the results include VAT?
Domestic energy carries 5% VAT. Each tool states whether its result includes VAT so you can compare it with your bill.
Why does my real bill differ?
Real bills depend on the weather, how you use your home and any tariff changes in the year, so treat the results as a guide.
How we build and check these tools
Every tool is built by hand by the Tools Veria Editorial Team, tested with worked examples and checked against official guidance. Read our editorial policy to see how we review figures when rules change. Key sources for this category:
Explore more categories
Browse all tools or read our practical guides.