Plan your home project or car costs before you spend
Calculators that turn your measurements into what you actually buy: cans, boxes, bags, sheets and litres, then into a budget in your own currency.
Example estimate
12 × 10 ft bedroom, 8 ft walls, two coats
- Paint to buy
- 2 × 1 gal
- Area to paint
- 301 sq ft
- Paint with 10% extra
- 1.89 gal
- At $42 a gallon
- $84.00
From the paint calculator. Switch to metric or your currency in the header.
Popular calculators
Free, no sign-up, works on your phone.
- Paint CalculatorGallons or litres and cans for several rooms, minus doors and windows.
- Concrete CalculatorSlabs, footings and round columns in cubic yards or m³ and bags.
- Flooring CalculatorLaminate or vinyl plank boxes for several areas, plus underlay.
- Trip Fuel Cost CalculatorFuel used and cost for a trip, round trip and split per person.
- Roofing CalculatorRoof area from the footprint and pitch, squares and bundles.
- AC BTU CalculatorAir conditioner size in BTU/h, kW and tons for one room.
- EV Charging Cost CalculatorCost to charge at home or at a public charger, and per mile or km.
- Tile CalculatorTiles, boxes, grout and adhesive for floors and walls.
All calculators by section
Home & DIY
Eighteen calculators for paint, flooring, concrete, fences, decks, roofs, energy use and remodel budgets.
Car & Fuel
Seven calculators for what a car costs after you drive it away: fuel, charging, finance and depreciation.
How our estimates work
Measure
Enter sizes in feet or metres. Each calculator says what to measure and where to measure it.
Get quantities
Area and volume become what shops sell: cans, boxes, bags, sheets, rolls and litres.
Add your prices
Example prices for five regions, empty price fields everywhere else. Your own prices give your own budget.
Keep a buffer
Waste allowances stay visible and editable. Use the result to brief licensed pros and compare quotes.
Why plan costs before you spend
Most home projects go over budget for one of two reasons: the quantities were guessed, or the prices were. CostPulse Hub tackles the first problem directly. Each calculator turns a few measurements into the amounts you actually buy, from cans of paint and boxes of flooring to bags of concrete, bundles of shingles and litres of fuel, with the waste allowance shown openly so you can change it.
Prices are the second problem, and we treat them with care. For the United States, the United Kingdom, Canada, the eurozone and Australia, calculators start with example prices in the local currency, and the fuel and electricity tools use published averages with the source and date beside them. Everywhere else the price fields start empty. We never convert US prices into rupees, dirhams or pesos, because a bag of cement or a litre of paint does not cost the same once the currency is swapped. Type the price from your local store and every cost line fills in.
The site is written for the US, UK and Canada first. Product sizes, terms and examples follow those markets, such as 4 × 8 ft drywall sheets, 80 lb concrete bags, emulsion tins and 3.78 L paint cans. Switch to metric in the header and every calculator converts your numbers instead of clearing them. The fuel tools also handle UK miles per gallon, which uses a larger gallon than the US one.
The car section covers what a vehicle costs once you own it: fuel for a trip, charging an electric car, leasing against financing, depreciation and the full cost of ownership per month and per mile or kilometre.
Every calculator shows its formula and a worked example that matches its own output, so you can check the arithmetic. Nothing you type is sent anywhere: the maths runs in your browser, and a share link simply carries your inputs in the address bar.
These are planning estimates, not quotes. Codes, permits, site conditions and labour rates vary, and electrical, gas, roofing and structural work belongs with licensed professionals. Use the numbers to set a budget and to ask contractors sharper questions.