Area Converter

Area converter: square meters, square feet, acres, and hectares

This converter moves any area between ten units that span everyday rooms, building floor-plans, and large parcels of land: square millimeters, square centimeters, square meters, square kilometers, square inches, square feet, square yards, acres, hectares, and square miles. Edit whichever row you have a number for, and the surface area is re-expressed across all ten. The factors below, and notes on where each unit turns up, follow.

The most-used area conversion factors

• 1 m² = 10.7639 ft² = 1,550 in²
• 1 ft² = 0.092903 m² = 144 in²
• 1 acre = 4,046.8564 m² = 43,560 ft² = 0.40469 hectares
• 1 hectare = 10,000 m² = 2.47105 acres
• 1 km² = 100 hectares = 247.105 acres = 0.386102 mi²
• 1 mi² = 2.58999 km² = 640 acres

Why area uses squared conversion factors

A common mistake is to convert area using a length factor. Because area is two-dimensional, the conversion factor is squared. One foot is 0.3048 meters, so one square foot is 0.3048 × 0.3048 = 0.092903 square meters — not 0.3048. The same logic explains why a room that is twice as long and twice as wide has four times the floor area, not twice.

Real estate and floor plans

Property listings in the US and UK quote interior space in square feet; most other countries use square meters. To compare a 1,200 ft² apartment with a 110 m² one, convert: 1,200 ft² = 111.5 m², so they are nearly identical. When you see "carpet area" versus "built-up area" on a listing, those describe what is being measured, not different units — convert the number the same way regardless.

Land, farming, and surveying

Rural land trades in acres (US/UK) or hectares (most of the world). A useful anchor: a standard soccer pitch is about 0.7 hectares or 1.76 acres, and an American football field including end zones is about 1.32 acres. Farmers planning seed or fertilizer rates per hectare often need the acre figure for equipment calibrated in imperial units — multiply hectares by 2.471 to get acres.

Small areas: tiling, glass, and materials

For tiling, glazing, and material estimates you usually work in square meters or square feet, with square centimeters and square inches for offcuts. Remember 1 m² = 10,000 cm² and 1 ft² = 144 in². When buying tile, add 10% for cuts and waste before converting your wall or floor area into the number of boxes you need.

Related converters

• Length Converter — convert the sides of a plot before computing its area.
• Volume Converter — for capacity and three-dimensional space.
• Unit Price Calculator — compare price per square foot or square meter across listings.