Practical, easy-to-use calculators to help you plan, compare and save.
See what your home costs to run.
Electricity CostEstimate your monthly and annual electricity costs.
Solar PanelSee what solar saves and how long it takes to pay back.
EV Charging CostWhat it costs to charge an electric car, vs petrol.
Heating CostCompare gas, oil and heat pump running costs.
Appliance Running CostWhat a tumble dryer, kettle or heater costs to run.Fuel CostWhat a car journey costs in petrol or diesel.BTU & Radiator SizeHow much heat a room needs, and the radiator to fit.Plan, budget and price your next home project.
Room Renovation CostEstimate decorating and flooring for a single room.
PaintCalculate how much paint your project needs.
FlooringEstimate flooring material and installation costs.
TileCalculate tile, adhesive and labour costs.
Roofing CostEstimate roofing materials and installation.Square MeterArea of any room or space in m² and square feet.ConcreteCubic metres, bags, cement, sand and gravel.DeckingDeck boards, joists and screws for any deck.GravelTonnes and bags of gravel, slate or chippings.BrickBricks or blocks, plus sand, cement and ties.WallpaperHow many rolls a room or feature wall needs.
Official sources, market rates and real-world benchmarks.
We review and update our data on a fixed schedule.
100% free to use. No account or personal details needed.
Every calculator, every region, no paywall and no upsell.
Most household running costs come down to one number: the price of a kWh. The electricity cost calculator turns your usage, unit rate and standing charge into a daily, monthly and yearly bill. The appliance running cost calculator shows where that money goes — a tumble dryer or plug-in heater usually dwarfs the fridge and TV combined.
The same kWh price decides what it costs to charge an electric car: the EV charging cost calculator compares home, overnight and public charging against petrol. The heating cost calculator puts gas, oil and a heat pump side by side, and the solar panel calculator works out how many of those kWh your roof could supply, and how long the panels take to pay back.
Project quotes vary widely because the quantities are rarely worked out the same way twice. The paint calculator, tile calculator and flooring calculator start from measurements, add the wastage a real job needs, and price materials and labour separately so you can see which half of a quote is out of line.
For a whole room, the room renovation cost calculator combines decorating and flooring across budget, mid and premium finishes. For the biggest single job most houses need, the roofing cost calculator works from footprint and pitch, and our guide to new roof cost in the UK explains why quotes for the same house can differ by thousands.
For a 65kWh battery, a full charge is about £5.50 on an overnight EV tariff, around £17 on a standard price-cap tariff and about £52 on a public rapid charger.
A 2.5kW vented or condenser dryer uses roughly 4kWh a load, so about £1 a load at the price-cap rate. A heat pump dryer uses around half that.
They default to UK prices, such as the Ofgem price cap and UK market rates, and can switch to US or EU figures. Every rate can be overwritten with your own.
They are planning figures, not quotes. Each shows its source and review date, and splits materials from labour so you can compare it against real quotes line by line.
Want the detail behind the numbers? Start with how much it costs to charge an electric car, how much paint you need or heat pump vs boiler, or browse all guides.
