An area converter is a calculator that translates the size of a two-dimensional surface (measured in square units) from one measurement system to another. It handles both metric units (square kilometres, square metres, square centimetres) and imperial/US units (acres, square miles, square feet, square yards), making it essential for real estate professionals, farmers, architects, and anyone comparing property or land sizes across regions.
How it works
The converter multiplies your input by a fixed conversion factor. Each pair of units has a mathematically defined ratio—for example, 1 square metre equals 10.764 square feet, and 1 hectare equals 2.471 acres. Enter your value and starting unit, select your target unit, and the tool applies the appropriate factor and displays the result instantly. All conversions are bidirectional, so you can swap input and output units at any time.
Examples
Input
Result
Notes
500 square metres to acres
0.124 acres
Useful for small farms or residential plots in European metric regions being converted to common UK/US acreage.
2 hectares to square feet
215,278 square feet
Agricultural land size in metric units converted for American contractors or property developers.
1,200 square feet to square metres
111.5 square metres
Apartment or house floor area in US units converted to the metric standard used in building codes worldwide.
How to use the Area Converter
Enter the area value you want to convert in the input field.
Select the unit your measurement is currently in (e.g. square feet, hectares).
Choose the target unit you want to convert to (e.g. square metres, acres).
The converter calculates and displays the result instantly—no button click needed.
Copy or note the result for your project, calculation, or record.
Swap units by clicking the reverse arrow if you need to convert the opposite direction.
Benefits
Eliminates manual calculation errors when comparing property sizes across countries.
Saves time for real estate agents, surveyors, and architects who regularly convert units.
Supports 24+ area units, covering every common and specialist measurement standard.
Free, browser-based tool—no app download or account needed.
Bidirectional conversion: works equally well in either direction without re-entering data.
Precise to multiple decimal places, suitable for professional and legal documents.
Tips & common mistakes
Common mistakes
Confusing square units with linear units—forgetting that 1 metre = 100 cm, but 1 square metre = 10,000 square centimetres.
Using the wrong unit button—selecting 'square feet' when you meant 'linear feet', or mixing acres with square acres.
Rounding too early when doing multi-step conversions, which compounds rounding error.
Assuming 1 hectare = 10,000 square metres (it does), but then mistakenly thinking 1 square kilometre = 100 hectares (it's actually 100).
Tips
When converting between metric and imperial (e.g. square metres to acres), the conversion factor is not a simple power of 10—use the converter rather than trying to estimate.
For large areas like farmland or real estate portfolios, convert to hectares or square kilometres first, then to the target unit, to avoid very large or very small numbers.
Bookmark this tool if you work with international properties or construction—metric and imperial measurements are still both common in global commerce.
When quoting prices per unit area (e.g. cost per square metre vs. cost per square foot), always convert the area first, then recalculate the price to avoid hidden cost differences.
Frequently asked questions
What is the difference between a hectare and a square kilometre?
1 hectare = 10,000 square metres. 1 square kilometre = 1,000,000 square metres = 100 hectares. Hectares are used for smaller land areas (farms, estates), while square kilometres measure larger regions (cities, regions).
How many square feet are in an acre?
1 acre = 43,560 square feet. An acre is roughly the size of a football field (without the end zones) and is the standard unit for measuring rural and residential land in the USA, UK, and Commonwealth countries.
Can I convert from square inches to acres?
Yes. The converter handles all combinations—even unusual ones. 1 acre = 6,272,640 square inches. Use the tool to convert from square inches to acres or any other unit.
Why does my property deed list area in both square metres and acres?
International properties, especially those bought/sold across metric and imperial countries, often include both measurements for legal clarity. Use the converter to verify they match and spot discrepancies.
Is the converter accurate enough for legal or surveying documents?
Yes, the tool uses standard international conversion factors and calculates to multiple decimal places. Always round to the precision required by your jurisdiction or contract, and check with your surveyor or solicitor for any special rounding rules.
What is a barn and why would I convert to it?
A barn is a tiny unit used in nuclear physics (1 barn = 10⁻²⁸ square metres). You'd convert to barns only in particle physics research—the area converter includes it for completeness, but it's not used in everyday land or construction measurement.