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Area converter

Convert square metres, acres, and hectares without a survey plat.

This tool processes files and text locally in your browser. Your content is not uploaded or stored by this site.

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What this tool does

Each area unit is the square of the matching length factor, except acre and hectare which use their legal SI values. A hectare is 10,000 m².

How to use it

  1. Enter the area.
  2. Pick source and destination units.
  3. Convert and copy the JSON.

Supported input

  • A number and two area units from the menu

Output

  • JSON with the converted area plus every other unit in the family

Privacy

This tool processes files and text locally in your browser. Your content is not uploaded or stored by this site.

ConvertPass does not include your input in analytics, URLs, or error reports. Encoding: Decimal numbers / SI square metre. Limit: A single area (4.0 KB).

Limitations

  • Cadastral acres and US survey acres are not offered. This acre is 43,560 international square feet.
  • Building ‘squares’ (100 ft²) and soccer-pitch folklore units are not in the menu.
  • This is not a GIS projection. It will not convert between coordinate systems.

Example

Input
1 hectare → acres
Output
{
  "result": 2.47105381467,
  "formatted": "1 ha = 2.47105381467 ac"
}

Troubleshooting

A land title disagrees by a few square feet
Titles may use a survey foot or a local chain. This page uses international feet. Use a licensed surveyor for boundaries.

FAQ

How many square metres is an acre?

4046.8564224 m² in this converter.

Is a hectare 100 m by 100 m?

Yes. 10,000 m².

Can I convert roofing squares?

No. A roofing square is a trade unit ConvertPass does not list.

Does squaring a mile match square miles?

Yes. The square mile uses the international mile squared.

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Related formats

Last reviewed 16 August 2026. Report a problem. Reports do not include your input.