Area Converter

Runs locally in your browser. Nothing leaves your device.

Enter one area and instantly convert it to square metres, hectares, acres, square feet, and other common units.

Use a comma or period as the decimal separator; do not use thousands separators.

All units

Metric square units

Square millimetre (mm²)
1,000,000
Square centimetre (cm²)
10,000
Square decimetre (dm²)
100
Square metre (m²)
From
1
Square kilometre (km²)
0.000001

Land area

Are (a)
0.01
Decare (daa)
0.001
Acre (international) (ac)
0.000247105381467
Hectare (ha)
0.0001

US customary and imperial square units

Square inch (in²)
1,550.00310001
Square foot (ft²)
To
10.7639104167
Square yard (yd²)
1.1959900463
Square mile (mi²)
3.86102158542e-7

How it works

  1. 1

    Enter value and source unit

    Enter the area value and choose the source unit from one of the three groups.

  2. 2

    Choose the target unit

    Choose the target unit, even from a different group, for example from hectares to acres.

  3. 3

    Copy the result or swap units

    Copy one or all results, or swap the source and target unit for the next conversion.

Good to know

The area converter converts directly in your browser between metric square units, Anglo-American square units, and land areas. All results are calculated via a common square-meter base, with exact definitions: 1 foot = 0.3048 m, 1 acre = 43,560 ft², 1 square mile = 640 acres, and 1 hectare = 10,000 m².

Calculation runs locally in the browser. Property and living-area figures can be defined differently by region — the international definitions used here are the standard reference for technical conversions.

Typical use cases

Compare property and real estate areas

Convert square meters to square feet or acres to better compare international real estate listings.

Assess agricultural land in hectares or acres

Convert hectares to acres or square miles, for example for agricultural land or survey figures.

Precisely convert technical area values

Use the exact international definitions to reliably convert area values for technical documentation or scientific calculations.

Tips for better results

Watch for regional definition differences

Real estate and living-area figures can use different calculation rules depending on the country — this tool uses the internationally defined units themselves.

Understand acres and square miles via the international foot

Acre and square mile here are based on the international foot (1 ft = 0.3048 m exactly) — very old or country-specific survey systems may show slight deviations.

Features

  • Three unit groups

    Metric square units, Anglo-American square units, and land areas are cleanly separated.

  • Local conversion

    Calculation happens directly in the browser, without transmission to a server.

  • Exact international definitions

    Conversions are based on a common square-meter base with transparent, exact definitions.

Frequently asked questions

How many square feet are in an acre?

An acre equals 43,560 square feet, based on the international foot (1 ft = 0.3048 m).

Are living-area figures internationally standardized?

No. Living-area calculation can differ by country — this tool only converts the units of measurement themselves exactly.

Are my inputs uploaded?

No. Conversion runs entirely locally in the browser.

Looking for another tool?

Every tool runs locally in your browser – no sign-up, no upload, and it works offline.