How to Convert Square feet to Ares (sq ft 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 feet into ares by hand, with examples and a quick-reference table.
The conversion
To convert square feet to ares, multiply the value by 0.0009290304. To go the other way, divide by the same number (or multiply by 1,076.391041671). Because the factor is tiny, scientific notation keeps the numbers manageable.
Ares = square feet × 0.0009290304
Worked examples
- 3 sq ft = 0.002787 a
- 12.5 sq ft = 0.011613 a
- 75 sq ft = 0.069677 a
Square feet to Ares table
| Square feet | Ares |
|---|---|
| 1 sq ft | 0.000929 a |
| 2 sq ft | 0.001858 a |
| 5 sq ft | 0.004645 a |
| 10 sq ft | 0.00929 a |
| 20 sq ft | 0.018581 a |
| 25 sq ft | 0.023226 a |
| 50 sq ft | 0.046452 a |
| 100 sq ft | 0.092903 a |
| 250 sq ft | 0.232258 a |
| 500 sq ft | 0.464515 a |
| 1,000 sq ft | 0.92903 a |
Common questions
Is sq ft 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 feet converter.
Mistakes to avoid
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
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.
Background
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.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
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 any value, use the Square feet to Ares Converter or browse all area converters.
Run your own numbers: Square feet to Ares Converter