Free Area Converter Online

Convert between square meters, acres, hectares, and more. Free, fast, and works entirely in your browser with no sign-up required.

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Area Converter

Convert between 23 area units — metric, imperial, land, regional & scientific. Includes real-time table, visual comparison, room calculator, favorites and history.

Common Presets

Area Converter

1 Acres

= 4046.8564 Square Meters

1 ac = 4046.8564224 m²

Favorites

4046.8564

Square Meters

43560

Square Feet

1

Acres

0.4047

Hectares

0.004

Square Kilometers

Conversion Table

Square Millimeters

mm²

Square Centimeters

cm²

Square Meters

Square Kilometers

km²

Hectares

ha

Ares

a

Square Inches

in²

Square Feet

ft²

Square Yards

yd²

Square Miles

mi²

Acres

ac

Square Nautical Miles

nmi²

Section

section
US

Rood

rood

Perch

perch

Bigha (India)

bigha
India

Rai (Thailand)

rai
Thailand

Tsubo (Japan)

tsubo
Japan

Pyeong (Korea)

pyeong
Korea

Ping (Taiwan)

ping
Taiwan

Gaj (India)

gaj
India

Barn

b

Circular Mil

cmil

Frequently Asked Questions

What is the Area Converter?

The Area Converter is a free online tool that converts between square meters, square feet, acres, hectares, and other area measurement units.

Is the Area Converter free?

Yes, it is completely free with no registration required. All conversions happen client-side in your browser.

What area units are supported?

The Area Converter supports square millimeters, square meters, square kilometers, square feet, square yards, acres, hectares, and more.

Is my data safe with this tool?

Absolutely. The Area Converter processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Does the Area Converter work on mobile devices?

Yes, the Area Converter is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

Do I need to create an account to use this tool?

No account or registration is needed. Simply open the Area Converter in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

How do I use the Area Converter?

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

Which browsers are supported?

The Area Converter works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

How many square feet are in an acre?

One acre equals exactly 43,560 square feet, which also works out to 4,046.86 square meters or about 0.4047 hectares. The acre is an old imperial unit historically defined as one furlong by one chain (660 feet by 66 feet), the area a team of oxen could plow in a day, so its size is not a round number in metric terms. That awkward ratio is exactly why people reach for a converter rather than trying the math by hand. To go the other way, divide a square-foot figure by 43,560 to get acres. Enter your value in the converter above, pick acres and square feet as your two units, and the result appears instantly along with a live table showing the same area in hectares, square meters, and every other supported unit.

What is the difference between an acre and a hectare?

An acre and a hectare both measure land, but they come from different systems and are not the same size. A hectare is a metric unit equal to exactly 10,000 square meters, roughly the size of a standard sports field. An acre is an imperial unit equal to 4,046.86 square meters. The practical takeaway is that one hectare equals about 2.471 acres, so a hectare is roughly two and a half times larger than an acre. Hectares dominate land and farm measurement across most of the world, while acres are standard in the United States and United Kingdom real estate. When a listing quotes one and you think in the other, type the number above, choose acres and hectares, and read the exact converted figure with the formula it used.

How do I convert square meters to acres?

To convert square meters to acres, divide the number of square meters by 4,046.86, since one acre is defined as 4,046.86 square meters. For example, 10,000 square meters works out to about 2.471 acres, and a 500-square-meter plot is roughly 0.1236 acres. The reverse is just as simple: multiply acres by 4,046.86 to get square meters. Because that constant is not a tidy round number, doing it on paper invites rounding mistakes, especially with large parcels where small errors compound. The converter above keeps every unit pinned to the square meter as its base, so each result is a single exact ratio. Enter your square-meter value, select acres as the target unit, and adjust the precision control to show 2, 4, or more decimal places depending on how exact you need the figure.

How big is a bigha compared to an acre?

A bigha is a traditional South Asian land unit that still appears on property documents across India, but it has no single fixed size — it varies by state and region. The standard value this converter uses is about 2,508 square meters per bigha, which works out to roughly 0.62 of an acre, so it takes a little over one and a half bighas to make one acre. Because the bigha differs locally, always confirm which regional definition a listing follows before relying on a number. Alongside the bigha, the tool also handles gaj (about 0.836 square meters, close to a square yard) and other regional units like rai, tsubo, pyeong, and ping. Enter a value above, pick bigha and acre or square feet, and you get an instant bridge between Indian land units and the metric or imperial systems.

How many acres are in a square mile?

One square mile contains exactly 640 acres, which is also equal to 2.59 square kilometers or 259 hectares. This 640-acre block is the basis of the US Public Land Survey System, where it is called a section — the grid unit used to divide and describe much of American farmland and rural property. A quarter section, a common parcel size, is therefore 160 acres. To convert in reverse, divide an acre figure by 640 to get square miles, or multiply square miles by 640 to get acres. These round relationships make the square mile useful for large rural tracts, while acres suit individual plots. Enter your value above, choose square miles and acres or the US section unit, and the converter shows the exact result plus the full conversion table across metric and imperial units at once.

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About the Area Converter

The Area Converter is a free online tool for converting a surface measurement from one unit to another — square meters to acres, hectares to square feet, square kilometers to square miles, and many more. Type a number, pick the unit you have and the unit you want, and the result appears instantly. It is built for anyone who works with land and space: buyers comparing plot listings, farmers sizing fields, architects and contractors scoping rooms and floors, students checking geometry homework, and travelers making sense of property ads written in unfamiliar units.

Everything runs locally in your browser. The values you enter are never uploaded to a server, there is no sign-up, and nothing is stored anywhere but your own device. Once the page has loaded, the converter keeps working even if you go offline.

Units and categories it covers

The converter handles 23 area units grouped into five families, so you can move between systems that rarely line up neatly:

  • Metric — square millimeters, square centimeters, square meters, and square kilometers.
  • Imperial — square inches, square feet, square yards, square miles, and square nautical miles.
  • Land and agricultural — hectares, ares, acres, the US section, rood, and perch.
  • Regional — bigha and gaj (India), rai (Thailand), tsubo (Japan), pyeong (Korea), and ping (Taiwan), which still appear on property documents across Asia.
  • Scientific — the barn (a nuclear cross-section unit) and the circular mil (used for wire gauge).

Every unit is defined against the square meter as the base, so each conversion is a single exact ratio. For reference, 1 acre is 4,046.86 m², 1 hectare is exactly 10,000 m², and 1 square mile equals 2.59 km² or 640 acres.

Working with results and large jobs

Conversions update in real time as you type, and a few features make the numbers easier to trust and reuse:

  • A live conversion table shows your value in every supported unit at once, so you can read across systems without re-entering anything.
  • A formula line spells out the exact equation behind each result, which is handy for double-checking or showing your work.
  • Precision control lets you display 2, 4, 6, 8, or 10 decimal places, and a scientific-notation toggle keeps very small or very large figures (like the barn) readable.
  • One-click swap, copy, preset quick-selects, favorites, and a recent-history list cut down repetitive entry, while visual size comparisons translate an area into familiar reference points such as a tennis court, a football field, or Central Park.

There is also a built-in room and land calculator: enter a length and width and it returns the area, which you can send straight into the converter to express that space in any other unit.

Why accurate area conversion matters

Land is priced, taxed, and zoned by area, so a unit mix-up has real consequences. A listing quoted in hectares means something very different from one in acres — one hectare is about 2.47 acres — and a buyer comparing a "5 bigha" plot in India with one measured in square feet needs a reliable bridge between the two. The same gap shows up in everyday projects: flooring, turf, and paint are all sold by coverage, so estimating materials starts with a clean area figure in the unit your supplier uses.

Because the Area Converter keeps every definition pinned to the square meter and shows the formula it used, you get conversions you can verify rather than numbers you have to take on faith. Enter a value above, choose your units, and read the result — along with the full table and a sense of scale — in a single view.