Area Unit Converter
Convert between different area units including square meters, square feet, acres, and more
Conversion Result
Converted to All Units
Common Area Conversions
Metric to Imperial
- • 1 square meter = 10.7639 square feet
- • 1 hectare = 2.47105 acres
- • 1 square kilometer = 0.386102 square miles
- • 1 square centimeter = 0.155 square inches
Imperial to Metric
- • 1 square foot = 0.092903 square meters
- • 1 acre = 0.404686 hectares
- • 1 square mile = 2.58999 square kilometers
- • 1 square inch = 6.4516 square centimeters
Understanding Area Units
Area is the measure of the extent of a two-dimensional surface. It is derived from length measurements and expressed in square units. The SI unit of area is the square meter (m²), defined as the area of a square with sides of exactly one meter. Area measurement is essential in fields such as real estate, agriculture, architecture, and land surveying.
Metric System (SI)
- Square Kilometer (km²): 1,000,000 square meters. Used for measuring large land areas such as countries, states, and geographical regions.
- Hectare (ha): 10,000 square meters (100 m × 100 m). Widely used in agriculture, forestry, and land management worldwide.
- Square Meter (m²): The SI derived unit of area. Commonly used for floor space, room sizes, and small plots.
- Square Centimeter (cm²): 1/10,000 of a square meter. Used for small surface measurements in science and everyday objects.
- Square Millimeter (mm²): 1/1,000,000 of a square meter. Used in engineering, manufacturing, and precision work.
Imperial / US Customary System
- Square Mile (mi²): 27,878,400 square feet (2,589,988.11 m²). Used for measuring large geographical areas, city sizes, and national parks in the US and UK.
- Acre (ac): 43,560 square feet (4,046.8564 m²). Originally defined as the area plowable in one day by one person with an ox. Widely used in real estate and agriculture in the US and UK.
- Square Yard (yd²): 9 square feet (0.836127 m²). Used for flooring, carpeting, and medium-sized areas.
- Square Foot (ft²): 144 square inches (0.092903 m²). The most common unit for expressing floor area and property size in the US.
- Square Inch (in²): 1/144 of a square foot (6.4516 cm²). Used for small surface areas, screen sizes, and material cross-sections.
Land Area Measurement Guide
Residential
- • Average US home lot: 0.2 acres
- • Typical apartment: 750-1,000 ft²
- • Average US home: 2,300 ft²
- • Tennis court: 2,808 ft²
Agriculture
- • Small farm: 5-50 acres
- • Average US farm: 445 acres
- • Football field: ~1.32 acres
- • Soccer field: ~1.76 acres
Geography
- • Manhattan: ~23 mi²
- • London (Greater): ~607 mi²
- • Central Park: 843 acres
- • Vatican City: 0.17 mi²
References
The conversion factors used in this calculator are based on internationally recognized standards and definitions:
Note: All conversions use exact or internationally accepted conversion factors. The square meter is the SI derived unit of area, defined as the area of a square with sides of one meter. Imperial and US customary area units are derived from the corresponding length definitions established since 1959 (1 inch = 25.4 mm exactly), ensuring precise conversion between systems.
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