Flooring calculator
Flooring is sold by the pack. Cutting waste depends far more on the layout than on the room size.
m2
Packs needed
10
- Floor area
- 20.00
- Area including waste
- 22.00
- Area you will actually buy
- 22.00
- Spare material
- 2.00
- Cost
- 320.00
- Skirting or beading needed
- 18.00
- Underlay
- 21.00
Show the working
- Room length = 5
- Room width = 4
- Coverage per pack = 2.2
- Layout = 10
- Price per pack = 32
- Floor area = 5 * 4 = 20
- Area including waste = 20 * (1 + 10/100) = 22
- Packs needed = ceil(22 / 2.2) = 10
- Area you will actually buy = 10 * 2.2 = 22
- Spare material = 22 - 20 = 2
- Cost = 10 * 32 = 320
- Skirting or beading needed = 2 * (5 + 4) = 18
- Underlay = 20 * 1.05 = 21
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
Scenarios & local history
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The formula
- packs = ceil(area x (1 + waste) / coverage per pack)
Keep a spare pack. Discontinued ranges are the reason people re-floor whole rooms after one damaged board.