Flooring (laminate/vinyl) Calculator
How much flooring (laminate/vinyl) do you need? Measure any number of rooms, add a waste factor, and get the square footage, quantity and cost to order.
A worked example
A 12 × 15 ft room is 180 square feet. Adding the 10% waste factor this calculator defaults to brings that up to 198 square feet to buy — 10 boxes, at 20 sq ft each. At the mid-range price of $7.00 per square foot that is about $1,386.00.
| Grade | Price per sq ft | 180 sq ft room, installed |
|---|---|---|
| Budget | $3.00 | $594.00 |
| Mid-range | $7.00 | $1,386.00 |
| Premium | $14.00 | $2,772.00 |
Price ranges are broad US ballpark figures for material plus typical installation, gathered as placeholders and not yet verified against sourced pricing. Use them to sanity-check a quote, not to replace one. Laminate and vinyl plank are usually boxed at 18–24 sq ft. Check your product’s box label.
To compare quotes on the same basis, see how to calculate price per square foot.
From square feet to boxes
Flooring is priced per square foot but sold by the box, so the useful number is never the raw area. Take the floor area, add the waste allowance, divide by the coverage printed on the box, then round up — a 180 square foot room at 10% waste needs 198 square feet, which is ten boxes at 20 square feet each, not 9.9.
Order every box in one go. Laminate and vinyl are produced in batches, and a box bought later can differ subtly in shade or gloss even when the product code matches.
Choosing a waste factor
Ten percent covers a plain rectangular room laid straight. Fifteen is the figure to use for a room with several corners, alcoves or doorways, and for any diagonal lay, where every board meeting a wall is a mitre cut. Twenty is prudent for wide planks or a strong repeating pattern, because matching the pattern across a seam costs you material each time.
The waste is not padding — it is the offcuts you genuinely cannot use. A board cut to finish one row can often start the next, which is why a long room wastes less than a wide one.
What to measure and what to skip
Floor through closets and under free-standing appliances: you want a continuous surface, and a replacement appliance may not have the same footprint. Do not floor under a run of base cabinets fixed to the subfloor, and subtract that footprint from your total.
Measure each room to the centre of its doorway so the threshold gets counted once rather than twice, and add roughly three square feet per doorway to the room the boards will run from. Transition strips are bought per doorway, not by the square foot.
Frequently asked questions
How do I calculate how much flooring I need?
Measure each room's floor area in square feet, add them up, add a waste allowance, then divide by the coverage per box and round up to whole boxes. A 180 square foot room with 10% waste needs 198 square feet of flooring; at 20 square feet a box that is 9.9 boxes, so you order 10.
How much extra flooring should I order for waste?
Ten percent for a straightforward rectangular room, 15% for a room with many corners or for a diagonal lay, and 20% for a wide-plank or heavily patterned product where matching costs you material. Keep one unopened box after the job — a plank damaged in three years' time is far cheaper to replace from stock than from a discontinued line.
Do I measure under cabinets, appliances and closets?
Floor through closets and under free-standing appliances, since you want a continuous surface and the appliance may be replaced by a different size. Do not floor under a run of base cabinets fixed to the subfloor, and subtract that footprint from your total. If a kitchen refit is plausible within the floor's lifetime, running the flooring through anyway is cheap insurance.
How do I handle transitions between rooms?
Measure each room to the centre of its doorway, so the threshold area is counted once rather than twice or not at all. Add the doorway strip itself — typically about 3 square feet per door — to whichever room you will run the boards from. Transition strips and thresholds are bought per doorway, not by the square foot.