How it works
Start with the length, width and wall height of one rectangular room. Enter the total area of doors and windows to subtract those openings from paintable walls. Your room follows you between the calculators, so changing the measurements updates every material estimate. Use the coverage, container size and pack quantity from the products you actually intend to buy. Add your own allowance for waste, then compare whole-pack costs. The shopping list combines paint with either tiles or flooring, keeping alternative floor finishes separate. Everything runs in your browser, without an account or uploaded measurements.
Assumptions and limitations
Use the coverage and pack size printed on your product label. Output estimates, not a cutting or installation plan. Materials only. Labor, delivery, tax, primer, adhesive and underlay are excluded.
Frequently asked questions
Are my measurements uploaded?
No. Your room measurements, product settings, units and currency are stored in this browser. Clear this site’s data to remove them.
Does changing units change the room?
No. Dimensions stay in metres internally. Metric and imperial views convert lengths, areas, litres and US gallons without changing the stored room.
Are the coverage and waste defaults guaranteed?
No. Defaults are examples. Use your product label and adjust for the surface, layout, cuts and installation instructions.