Area Converter

Square and land-area units

This converter covers square kilometers, square meters, square centimeters and square millimeters, plus square miles, acres, square yards, square feet and square inches. The hectare and acre make it perfect for real estate, farming and surveying.

All values derive from exact length definitions, so 1 acre = 4046.8564224 m² and 1 hectare = 10,000 m² are handled precisely.

Common area conversions

• Square meters to square feet
• Acres to hectares and hectares to acres
• Square feet to square meters for floor plans

Key features at a glance

• Metric units: square km, m², cm², and mm²
• Imperial units: square miles, yards, feet, and inches
• Land-area units: acres and hectares
• Live conversion table updates as you type
• Exact results derived from precise length definitions
• Runs entirely in your browser, even offline

Why area conversions square the ratio

Area conversions have a twist that catches people out: the conversion factor is the square of the length factor. Because one foot is 0.3048 meters, one square foot is 0.3048 squared — about 0.0929 — square meters, not 0.3048. This squaring applies to every area conversion, so the numbers grow or shrink much faster than the corresponding length conversions.

Forgetting to square the factor is one of the most common measurement errors. The converter handles it automatically, deriving every area unit from the exact definition of its underlying length, so 1 acre = 4046.8564224 square meters and 1 hectare = 10,000 square meters come out precisely. You never have to remember to square anything; you just read the correct result.

Acres, hectares, and land measurement

Land is measured in its own traditional units. The acre, historically the area a yoke of oxen could plough in a day, is still standard for real estate and farming in the United States and United Kingdom. The hectare, equal to 10,000 square meters or about 2.47 acres, is the metric land unit used almost everywhere else, especially in agriculture.

Because property and farmland are bought, sold, and taxed by area, converting accurately between acres and hectares matters financially. A small percentage error on a large parcel can represent a significant amount of land, which is why this converter uses exact definitions. Surveyors, farmers, and real-estate professionals all rely on precise area conversions to avoid costly mistakes.

Square units for floor plans and projects

On a smaller scale, square meters and square feet dominate construction, interior design, and DIY. Flooring, paint, tiling, and carpeting are all sold and estimated by area, so converting a room measured in feet into square meters — or vice versa — is a routine task when plans or materials come from different systems.

Getting these conversions right prevents over- or under-ordering materials, which wastes money or stalls a project. Because the converter shows a full table at once, you can take a floor area in square feet and immediately see it in square meters, square yards, and more, matching whatever unit your supplier or plan uses without recalculating each time.

Tips for converting area

• Remember the conversion factor is squared — square it from the length factor
• One square meter is about 10.76 square feet
• An acre is about 0.405 hectares; a hectare is about 2.47 acres
• Use square meters and square feet for rooms and flooring
• Use acres and hectares for land, fields, and real estate

Why choose our area converter?

Our converter is completely free with no signup, no limits, and no subscription. It runs entirely in your browser, so conversions are instant, it works offline, and the values you enter never leave your device.

It is one of more than 200 free tools on ToopTools, and you can pin it to your My Workspace, a personalized workspace where you keep the tools you use most in a single dashboard. Beside the other unit converters, it covers every area conversion from a room to a farm in one place.

Common use cases

People use the area converter for real estate and land deals where plot sizes are quoted in acres or hectares, for home projects like flooring and painting measured in square feet or square meters, and for farming and surveying. It removes the squaring math that area conversions require.

Architects and builders convert floor areas between systems, gardeners and farmers work in hectares and acres, and students solve geometry problems involving area units. Because every unit appears at once, a measurement in one system instantly reads across all the others.

Is the area converter free?

Yes. It is completely free with no account, no sign-up, and no usage limits. Convert as many areas as you like at no cost.

How many square feet are in a square meter?

One square meter is about 10.764 square feet. The factor is the square of the meter-to-foot ratio, which is why it is so much larger than the roughly 3.28 used for length.

How big is an acre compared to a hectare?

One hectare equals about 2.471 acres, and one acre is about 0.405 hectares. A hectare is 10,000 square meters, while an acre is about 4,047 square meters.

Why is the area conversion factor squared?

Because area is length multiplied by length. If one unit is some factor of another in length, the area factor is that number squared, so converting requires squaring the length ratio — something the converter does automatically.

Which unit should I use for a room?

Square meters or square feet are standard for rooms and floor areas, depending on your country. The converter lets you enter one and read the other, which is handy when plans and materials use different systems.

Are my conversions kept private?

Yes. Everything is computed in your browser and nothing is uploaded, so the values you enter stay private and the tool works without an internet connection.

How do I convert acres to square feet?

Enter the area in acres and select square feet as the target, and the converter shows the result instantly. It also covers square meters, hectares, square kilometers, and square miles, so you can switch between land and building area units in one step.

Does the area converter work offline?

Yes. The conversion runs entirely in your browser, so once the page has loaded the tool works without an internet connection, and nothing you enter is uploaded — it stays private on your own device.