Put in your measurements
Type the room in feet and inches - whichever your tape gives you. Odd shapes? Break the room into rectangles and add them up; the calculator keeps a running total.
From a tape measure to a shopping list.
Every calculator here does the same job an estimator does on a takeoff sheet: turn the size of a room into the right amount of material to buy. The difference is it shows you the sum, so you are never trusting a black box with your money.
Three steps
What you do, what it does
Tell it what you are buying
Pick a tile size, plank, board, box or tin - or open advanced mode and type the exact dimensions off the packaging. The result is the materials you can actually order, not a generic average.
Read the count, and the working
You get the number to buy, plus the sum behind it: area, coverage per unit, the waste added, and the rounding up to a whole box or tin. Nothing is hidden, so you can sanity-check it before you spend.
A worked example
Nothing up our sleeve
Here is the whole calculation a tile job runs through - the same four lines you would scribble on the back of an envelope. Measure the floor, divide by the size of one tile, add the waste for the layout, then round up to whole tiles. That last number is what you carry to the counter.
// TILE.FORMULA
area = 5.0 × 4.0 = 20.0 m²
per_tile = 0.6 × 0.6 = 0.36 m²
tiles = ⌈ 20 ÷ 0.36 × 1.10 ⌉
→ 61 tiles
The rules we follow
Why you can trust the number
Wastage that fits the job
A straight grid layout wastes less than a herringbone or diagonal one, so the allowance changes with the pattern instead of a flat “add 10% and hope”.
Units that never lie
Everything is worked out in metric behind the scenes and converted only for display. Flip between feet and metres as often as you like - the answer underneath stays the same.
Rounded the way you order
You cannot buy two-thirds of a tin or half a box. We round up to whole packs, the same as the trade counter will, so you come home with enough.
Estimates, and we say so
These tools get you a tight, defensible number - but walls are rarely square and tiles get broken. Always eyeball the result against the room before you place the order.