Area Converter — Convert Square Feet, Meters, Acres, Hectares

How Area Conversion Works

Area measures two-dimensional space — the amount of surface a shape covers. Area units are the squares of linear units: a square meter is the area of a 1-meter × 1-meter square, and a square foot is a 1-foot × 1-foot square. This is why area conversions involve squaring the linear conversion factor: there are 10.764 square feet in a square meter because 1 meter = 3.281 feet, and 3.281² ≈ 10.764.

In the United States, real estate and land area are measured in square feet (for buildings and homes) and acres (for land). One acre equals exactly 43,560 square feet, roughly the size of an American football field without end zones. In most other countries, floor area is listed in square meters and land in hectares (1 hectare = 10,000 square meters = 2.471 acres).

For geographic and scientific applications, square kilometers and hectares are the metric standards worldwide. Countries report agricultural land, national parks, and urban districts in hectares or square kilometers. The United States uses square miles for geographic areas (1 square mile = 640 acres = 258.999 hectares) and acres for farmland and real estate parcels.

Area conversions are essential when buying property abroad, interpreting apartment listings from foreign countries (square meters vs. square feet), reading architectural plans from different systems, understanding land-use data from international sources, or comparing city or country sizes across different geographic databases.

Key Facts About Area

The world's extremes: Vatican City is the world's smallest country at about 0.44 km² (44 hectares, or 109 acres). Russia is the largest at 17.1 million km² — over 38 billion acres, or about 1.8 times the size of Antarctica.
The acre's origin: An acre was historically defined as the amount of land a yoke of oxen could plow in one day — roughly a strip 1 furlong (201 m) long and 1 chain (20.1 m) wide, which multiplies to 4,047 m² (close to the exact 4,046.86 m²).
Sports field areas: An NBA basketball court is about 4,700 sq ft (437 m²). An American football field including end zones is roughly 1.32 acres (0.535 hectares). A FIFA regulation soccer pitch ranges from 0.62 to 0.82 acres.
One square mile: Exactly 640 acres, 2.590 km², or 258.999 hectares. Many western US cities were planned on a 1-mile grid, making square-mile city blocks a common reference.

Frequently Asked Questions

How many square feet are in an acre?

One acre equals exactly 43,560 square feet. This is a standard measurement used in real estate in the United States. One acre is also approximately 4,047 square meters or 0.405 hectares.

How do I convert square meters to square feet?

To convert square meters to square feet, multiply by 10.7639. For example, 100 square meters = 100 × 10.7639 = 1,076.39 square feet.

How many hectares are in a square kilometer?

There are exactly 100 hectares in one square kilometer. One hectare equals 10,000 square meters, and one square kilometer equals 1,000,000 square meters.

What is the difference between an acre and a hectare?

One hectare equals approximately 2.471 acres. A hectare is 10,000 square meters, while an acre is approximately 4,047 square meters. The hectare is a metric unit, while the acre is primarily used in the US and UK.

How many square meters are in a square mile?

One square mile equals exactly 2,589,988.11 square meters (approximately 2.59 square kilometers). There are 640 acres in one square mile.