Length & Area Converter
Convert lengths and areas between metric and imperial units — for reading specifications, sizing materials and checking a BOQ.
Enter a value to convert.
Building specifications mix units across markets: panel sizes in millimetres, ceiling heights in metres, board sheets quoted as 8′×4′ and areas in both m² and ft². This converter moves a value cleanly between millimetres, centimetres, metres, inches and feet for length, and between mm², cm², m², in² and ft² for area, so a metric drawing and an imperial datasheet line up.
Common conversions for building materials
1 metre = 3.281 feet, and 1 foot = 0.3048 metres. 1 inch = 25.4 mm. For area, 1 m² = 10.764 ft², and a standard 8′×4′ board (2.438 m × 1.219 m) is 2.97 m².
When you size a job in the coverage estimator, you can use this converter first to bring an imperial drawing into metres, or to express a metric result back in feet for a client who works imperially.
Why precision matters on a façade or floor
Small rounding errors compound across a large elevation. Converting at full precision — then rounding only the final quantity — avoids ordering a panel too few across a run, or a box too many.
If you are unsure which unit a specification uses, send it over with your enquiry; we read drawings and BOQs in either system and quote in the one you prefer.
Frequently asked questions
How do I convert square metres to square feet?
Multiply m² by 10.764 to get ft². To go the other way, multiply ft² by 0.092903. The converter does this instantly for any value.
How many millimetres are in an inch?
Exactly 25.4 mm. So a ½-inch board is 12.7 mm and a ¾-inch board is 19.05 mm.
What is a standard 8 by 4 board in metres?
An 8′×4′ sheet is 2.438 m × 1.219 m, an area of about 2.97 m² — the basis for the cement-board coverage in our estimator.
Need the materials — not just the maths?
Tech Serve Solutions supplies wall panels, WPC cladding, uPVC, cement boards and roofing to EN, ASTM and ISO standards — specified, sampled and exported worldwide.