About the Area Converter
Area Converter changes a surface area between square millimetres, centimetres, metres and kilometres, hectares, square inches, feet and yards, acres and square miles. Enter a number, choose its unit and every other unit appears. It is made for property and land sizes, room and floor plans, farm plots, garden beds and school geometry, where a listing may use square feet and a plan square metres. The factors are exact, built from the international inch and foot.
Updated October 2026
How to use the Area Converter
- 1Type the an area you want to convert.
- 2Choose the unit it is in from the From unit list.
- 3Read the result in every other unit straight away.
- 4Press Copy to keep the answer, or change the number to try another.
When you need a an area converter
Area Converter changes a surface area between square millimetres, centimetres, metres and kilometres, hectares, square inches, feet and yards, acres and square miles. Square units confuse people because the factor is squared. One foot is 0.3048 m, but one square foot is 0.3048 squared, which is 0.0929 square metres. That is why you cannot just multiply an area by the length factor, and it is a good reason to use a converter instead of working it out by hand.
Units and what they mean
Property sizes are quoted in different units around the world. Homes in the US and UK are often given in square feet, in most other countries in square metres, and land in acres or hectares. A 1,000 sq ft flat is about 92.9 m², and a 5 acre plot is about 2.02 hectares.
- Square metre and hectare: a hectare is a 100 m by 100 m square
- Square foot, square yard: 9 square feet per square yard
- Acre: 43,560 square feet, or about 4,047 square metres
- Square kilometre and square mile: for towns, parks and countries
Tips for accurate results
If you only have the lengths, find the area first (length times width for a rectangle) and convert it here. For irregular rooms, split them into rectangles and add the areas. Use the Area Calculator for shapes and the Flooring Calculator when you also need to allow for waste.
Round only at the end of a calculation. If you convert and then convert again, keep the full number in between so small errors do not add up.
Related conversions
Land measures differ between regions: some places use older units, such as the bigha or the cent, that are not included here. Always check what a local unit means before you use it in a contract. Related tools: Length Converter, Area Calculator, Flooring Calculator, Volume Converter and Unit Converter.
Features
- 10 units in one list
- Every result shown at once
- Exact factors, no rounding until you read it
- Works with decimals and negative-free values
- Copy button for the answer
- Calculated in your browser, so nothing is uploaded.
Frequently asked questions
How do I convert an area?
Type the number, pick the unit you start with and read the answer in every other unit below. Each unit is stored as an exact factor of one base unit, so a result is the number times its factor divided by the target unit's factor.
How many square feet are in an acre?
43,560 square feet.
How many square metres are in a hectare?
Exactly 10,000 square metres, which is about 2.471 acres.
How do I convert square feet to square metres?
Multiply by 0.09290304, or divide by 10.7639. This page does it for you.
Is the result exact?
The factors used are the official or standard definitions, so the maths is exact. The page rounds what it shows to about 10 significant digits so numbers stay readable.
Does it work on my phone?
Yes. The page is built for small screens, with large inputs and a list of units you can scroll.
Is anything sent to a server?
No. The conversion is plain arithmetic in your browser, so nothing you type leaves your device.