acre to square metre
Live acre (ac) to square metre (m²) converter. Plus a 10-value reference table and FAQs.
Conversion table
Ten sample values from acre to square metre. Use the converter above for arbitrary values.
| acre (ac) | → | square metre (m²) |
|---|---|---|
| 0.001 ac | → | 4.046856 m² |
| 0.01 ac | → | 40.468564 m² |
| 0.1 ac | → | 404.685642 m² |
| 0.5 ac | → | 2,023.428211 m² |
| 1 ac | → | 4,046.856422 m² |
| 2 ac | → | 8,093.712845 m² |
| 5 ac | → | 20,234.282112 m² |
| 10 ac | → | 40,468.564224 m² |
| 100 ac | → | 404,685.64224 m² |
| 1,000 ac | → | 4,046,856.4224 m² |
About the acre
4,047 m². US farmland and lot size.
About the square metre
SI base unit of area.
How acre to square metre conversion works
Both units belong to Area. Unitbox first expresses the input in the category reference unit (m²), then expresses that same quantity in square metre.
The right unit depends on the convention used by your industry, country, instrument, or source document.
Unit definitions and conversion factors are maintained in the Unitbox methodology. Last reviewed with the current conversion dataset.
Frequently asked questions
Frequently Asked Questions
How do I convert acre to square metre?
Multiply the acre value by 4,046.856422 to get it in square metre. For example, 10 ac = 40,468.5642 m².
What is 1 ac in m²?
1 ac = 4,046.856422 m².
What is 100 ac in m²?
100 ac = 404,685.6422 m².
What is the formula?
Linear: multiply by 4,046.856422 (the unit factor ratio).
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