Acres to Square Meters Converter
Match acres and square meters for land-area reading. The calculation uses 1 acre = 4,046.8564224 m² and also updates hectare and square-foot support values.
acre
m²
ready to use.
- Visible firstKeep the input and result positions clear.
- Results firstPut the main number up front and keep process details secondary.
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Read acres, square meters, hectares, and pyeong together
Acres often appear in land listings, while Korean and metric documents usually need square meters or hectares. This page converts acre and m² both ways and keeps ha, ft², and pyeong as helper values.
The basis is 1 acre = 43,560 ft² = 4,046.8564224 m². Acres to m² multiply by that value; m² to acres divide by it.
Use it in screen order
- Enter acres when the source document uses acreage. The m², ha, ft², and pyeong cards update together.
- Enter square meters when that is the official number. The acre value is shown without removing the metric basis.
- For land documents, keep the source unit, converted unit, and rounding rule in the same note.
Worked examples
Area numbers grow quickly, so a small rounding choice can look large. Keep the original area unit next to the conversion.
What each unit is for
- acre is a land-area unit defined as 43,560 square feet.
- m² is the clearest comparison unit for contracts, building data, and public records.
- ha is 10,000 m², so it keeps large farmland or forest areas readable.
- pyeong is a Korean helper value for intuition; m² remains the formal area unit.
Rounding and cautions
- Boundary surveys, cadastral maps, and registrations should follow the source record before a simple unit conversion.
- Pyeong values are helper numbers and can be rounded differently depending on context.
- Square feet are shown because they explain the acre definition; they are not always the final filing unit.
FAQ
How many square meters are in 1 acre?
1 acre is 4,046.8564224 square meters.
How many acres are in 10,000 m²?
10,000 m² is about 2.471054 acres and exactly 1 hectare.
What is the difference between hectare and acre?
A hectare is a metric area of 10,000 m². An acre is defined as 43,560 ft².
Is pyeong an official area value?
It is shown as a helper value. For official work, check and keep the m² value.
Can I use this for real-estate paperwork?
Use it to check unit conversion, but verify the original area, survey basis, and rounding rule before filing or signing.
Reference
NIST Handbook 44 Appendix C defines the acre as 43,560 square feet, which equals 4,046.8564224 m² with the international foot.