Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Wallpaper Calculator (Rolls per Room)

Estimate how many rolls of wallpaper you need for a room, including a waste allowance for pattern match and trimming. Works with US double rolls and European standard rolls.

Total wall area (sq ft)

Waste allowance (%)

Coverage per roll (sq ft/roll)

Fill in the required fields to see your result.

Construction

Tile Quantity Calculator

Estimate how many tiles you need for a floor or wall, including a built-in 10% allowance for cuts and breakage. Multiply the floor area by the inverse tile area, round up, then add 10%.

Floor Length (m)

Floor Width (m)

Tile Length (m)

Tile Width (m)

Fill in the required fields to see your result.

Key differences

	Wallpaper Calculator (Rolls per Room)	Tile Quantity Calculator
Category	Construction	Construction
Inputs required	3	4
Result	Rolls needed (rolls)	Tiles Needed (with 10% waste) (pieces)
What it does	Estimate how many rolls of wallpaper you need for a room, including a waste allowance for pattern match and trimming. Works with US double rolls and European standard rolls.	Estimate how many tiles you need for a floor or wall, including a built-in 10% allowance for cuts and breakage. Multiply the floor area by the inverse tile area, round up, then add 10%.