Decorating calculators
Plan paint, wallpaper and flooring purchases from measured rooms, wall widths and product coverage.
Paint calculator
Calculate litres or US gallons and whole tins from the walls and openings you measure.
Calculate materials →Wallpaper calculator
Count full-height drops and rolls with trimming and pattern repeat.
Calculate materials →Flooring calculator
Combine rectangular areas and calculate whole flooring packs.
Calculate materials →Measure first. Order with confidence.
Start with your site measurements, then check any supplier-specific pack yield, density or product dimensions. These calculators give material estimates, not structural or safety certification. You can switch between UK and USA units without having a separate formula for each market.
How estimates are calculated →