Loading…
Convert square meters, feet, acres, hectares and more.
Convert square meters, feet, acres, hectares and more.
Enter values above and click Calculate — results will appear here with the formula explained.
Area units are length units squared, so their conversion factors square too: a meter is 3.28 feet, but a square meter is 10.76 square feet. Forgetting to square is the classic real-estate arithmetic blunder.
Land measurement adds agricultural history: the acre descends from what oxen could plow in a day (now fixed at 4,046.86 m²), while the hectare neatly packs 100×100 meters — ten thousand square meters, or about 2.47 acres.
Listing-area definitions differ by country and decide what you're actually buying: US gross living area (ANSI, above-grade finished), UK gross internal area, continental living-plus-balcony-half rules, and Japan's wall-center (壁芯) versus inner (内法) methods differing ~5%. Same floor, different numbers — always ask which standard a listing uses.
Carpet versus built-up versus super built-up (India) stack further: carpet is walkable inside walls, built-up adds walls, super built-up adds a share of lobbies and stairs (loading factor 25–40%). A 1,000 sq ft super-built-up flat may offer 700 sq ft carpet — compare like with like.
Everyday anchors: a parking space ~12.5 m² (135 sq ft), tennis court ~261 m², football pitch ~7,140 m², Manhattan block ~8,000–20,000 m² depending on avenue. Anchoring abstract figures to these keeps listings honest in your head.
Paper, screens and pixels use area too: A4 (210×297 mm ≈ 0.062 m²) halves geometrically down the A-series, screen inches measure diagonals (a 55-inch TV is ~0.82 m² of panel), and megapixels are literally millions of pixel-area units. Squaring applies everywhere length does.
Convert square meters, feet, acres, hectares and more. Formula: result = value × (from²-factor ÷ to²-factor), anchored on square meters. Example: An 850 m² plot equals 9,150 sq ft ≈ 0.21 acres.
Area units are length units squared, so their conversion factors square too: a meter is 3.28 feet, but a square meter is 10.76 square feet. Forgetting to square is the classic real-estate arithmetic blunder.
Land measurement adds agricultural history: the acre descends from what oxen could plow in a day (now fixed at 4,046.86 m²), while the hectare neatly packs 100×100 meters — ten thousand square meters, or about 2.47 acres.
Listing-area definitions differ by country and decide what you're actually buying: US gross living area (ANSI, above-grade finished), UK gross internal area, continental living-plus-balcony-half rules, and Japan's wall-center (壁芯) versus inner (内法) methods differing ~5%. Same floor, different numbers — always ask which standard a listing uses.
Carpet versus built-up versus super built-up (India) stack further: carpet is walkable inside walls, built-up adds walls, super built-up adds a share of lobbies and stairs (loading factor 25–40%). A 1,000 sq ft super-built-up flat may offer 700 sq ft carpet — compare like with like.
Everyday anchors: a parking space ~12.5 m² (135 sq ft), tennis court ~261 m², football pitch ~7,140 m², Manhattan block ~8,000–20,000 m² depending on avenue. Anchoring abstract figures to these keeps listings honest in your head.
Paper, screens and pixels use area too: A4 (210×297 mm ≈ 0.062 m²) halves geometrically down the A-series, screen inches measure diagonals (a 55-inch TV is ~0.82 m² of panel), and megapixels are literally millions of pixel-area units. Squaring applies everywhere length does.
An 850 m² plot equals 9,150 sq ft ≈ 0.21 acres. Conversely a quarter-acre lot spans about 1,012 m². A 1,000 sq ft super-built-up flat at 30% loading offers just 700 sq ft carpet — the number that decides furniture fit.
Formulas are standard public references (see our methodology). External standards are cited in the text where they apply.
Last reviewed: September 2026 · Report an error