Interior Calculators
Material calculators for interior home projects. Each calculator provides multi-material output, waste factor adjustments, and a downloadable PDF material list.
Flooring
Tile Calculator for L-Shaped RoomsTiles, grout, and adhesive for rectangular, L-shaped, and U-shaped rooms with box rounding and waste for 4 laying patterns per BS 5385-3:2014.Laminate Flooring Calculator & WasteLaminate flooring packs for any room shape with 10% straight, 12% brick bond, or 15% diagonal waste plus expansion gap guidance per BS 8425:2003.Carpet Area Calculator for Any RoomCarpet, underlay, and gripper rod quantities for rectangular, L-shaped, and U-shaped rooms. 4m or 5m roll widths with 10% cutting waste.Vinyl Flooring Calculator with WasteVinyl flooring quantities for plank, tile, or sheet formats. Pack counts with 10% straight or 15% diagonal waste, plus underlay and adhesive.Staircase Carpet Calculator & WinderCarpet, underlay, gripper rod, and nosing strips for straight stairs or winder turns. Per-tread and per-riser waste with 4 stair-shape presets.Hardwood Floor Calculator & WasteHardwood board and pack counts for L-shaped and U-shaped rooms with waste for straight, brick bond, or herringbone patterns per BS 8201:2011.
Walls & Ceilings
Paint Calculator with Coverage RatesPaint quantities for walls and ceiling with door and window deductions, 10-14 m²/L coverage rates per Dulux/Crown, and multiple coats support.Wallpaper Calculator & Pattern RepeatWallpaper rolls including pattern repeat waste and half-drop matching, sized to standard 10.05m × 0.53m UK rolls across multiple wall sections.Grout Calculator with Coverage RateGrout weight from tile size, joint width, and joint depth. Covers sanded, unsanded, and epoxy types per BS 5385-3 with 5kg bag counts.Curtain Fabric Calculator & FullnessCurtain fabric yardage from track width, drop, fullness ratio (1.5× to 3×), and pattern repeat. Pencil pleat and pinch pleat heading support.Blind Sizing Calculator for WindowsRoller blind sizes for inside or outside mount with recess depth check, 50-75mm overlap allowance, and clearance for blackout or vertical blinds.
Trim & Mouldings
Looking for outdoor projects?
Garden Calculators