How to Convert Square metres to Ares (m² to a)
Area conversions are everyday maths in Singapore property: HDB flats are listed in square metres while condo listings and PSF prices use square feet. This guide shows how to convert square metres into ares by hand, with examples and a quick-reference table.
The conversion
To convert square metres to ares, multiply the value by 0.01. To go the other way, divide by the same number (or multiply by 100). For a quick estimate, multiply by about 0.01.
Ares = square metres × 0.01
Worked examples
- 3 m² = 0.03 a
- 12.5 m² = 0.125 a
- 75 m² = 0.75 a
Square metres to Ares table
| Square metres | Ares |
|---|---|
| 1 m² | 0.01 a |
| 2 m² | 0.02 a |
| 5 m² | 0.05 a |
| 10 m² | 0.1 a |
| 20 m² | 0.2 a |
| 25 m² | 0.25 a |
| 50 m² | 0.5 a |
| 100 m² | 1 a |
| 250 m² | 2.5 a |
| 500 m² | 5 a |
| 1,000 m² | 10 a |
Common questions
Is m² to a exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Ares to Square metres converter.
Mistakes to avoid
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Background
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
For any value, use the Square metres to Ares Converter or browse all area converters.
Run your own numbers: Square metres to Ares Converter