- Enter Area — Type any numeric value into the input field.
- Select Units — Choose source and target units from 10 area units: mm², cm², in², ft², yd², m², acre, hectare, km², and mi². Use swap to reverse.
- See Results — Real-time conversion with all other equivalents shown.
- Copy Result — Click 'Copy' to copy the converted value.
Area Converter — Convert Between Area and Surface Units
The Area Converter is a free, instant-use tool that converts between 10 area and surface measurement units. Whether you're working in real estate, agriculture, construction, landscaping, or scientific calculations, this tool provides accurate real-time conversions between metric and imperial area units with an intuitive interface.
All calculations use exact conversion factors and are performed entirely in your browser. No data is sent to any server, making this tool suitable for professional, educational, and personal use.
Supported Area Units
- Square Millimeter (mm²) — Used in precision engineering, electronics, and material science. Cross-sections of wires and small components are measured in mm².
- Square Centimeter (cm²) — Common in everyday measurements, medical contexts (wound sizes), and small-scale design work.
- Square Inch (in²) — Used in the US for small areas including paper sizes, screen areas, and material calculations.
- Square Foot (ft²) — The primary unit for floor area in the US real estate market. Also used for room sizes, building areas, and lot sizes.
- Square Yard (yd²) — Used for fabric, carpet, and flooring measurements. One square yard equals 9 square feet.
- Square Meter (m²) — The SI unit of area. Used internationally for floor areas, land parcels, and general area measurements. The standard in most countries' real estate markets.
- Acre (ac) — 43,560 square feet or approximately 4,047 m². Used for land area in the US, UK, and other countries. Originally defined as the area one yoke of oxen could plow in a day.
- Hectare (ha) — 10,000 square meters (100m × 100m). The international standard for agricultural and land area measurement. Approximately 2.471 acres.
- Square Kilometer (km²) — Used for geographic areas, city sizes, country areas, and large-scale land measurements. 100 hectares = 1 km².
- Square Mile (mi²) — Used in the US and UK for geographic and county areas. One square mile equals 640 acres or approximately 2.59 km².
Key Conversion Factors
- 1 m² = 10.764 ft² = 1.196 yd²
- 1 acre = 43,560 ft² = 4,046.86 m² = 0.4047 ha
- 1 hectare = 10,000 m² = 2.471 acres
- 1 km² = 100 ha = 247.1 acres = 0.386 mi²
- 1 mi² = 640 acres = 2.59 km²
Key Features
- Real-Time Conversion — Results update instantly as you type.
- All-Unit View — See all 9 other equivalents simultaneously.
- Swap Button — Reverse conversion direction instantly.
- Scientific Notation — For very large or small values.
- Copy to Clipboard — Copy results instantly.
Common Use Cases
- Real Estate — Convert between m², ft², and acres for property listings.
- Agriculture — Convert between hectares, acres, and km² for farm and crop planning.
- Construction — Convert floor areas between metric and imperial.
- Geography — Compare country, city, and region sizes across measurement systems.
- Landscaping — Calculate garden, lawn, and yard areas.
Privacy and Browser Support
All conversions run entirely in your browser. Works in all modern browsers offline.