Square feet to Square inches Converter
Convert square feet (sq ft) to square inches (sq in) instantly. Area conversions are everyday maths in Singapore property: HDB flats are listed in square metres while condo listings and PSF prices use square feet.
Result
- Square inches
- 144 sq in
How to use the square feet to square inches converter
- Enter the square feet (sq ft).
- The results update as you type, or press Calculate.
- Read the square inches first, then the supporting figures below it.
Formula
Square inches = square feet × 144
Worked example
For example, with these inputs:
- Square feet (sq ft): 1
the calculator returns:
- Square inches: 144 sq in
Square feet to Square inches table
| Square feet | Square inches |
|---|---|
| 1 sq ft | 144 sq in |
| 2 sq ft | 288 sq in |
| 5 sq ft | 720 sq in |
| 10 sq ft | 1,440 sq in |
| 20 sq ft | 2,880 sq in |
| 25 sq ft | 3,600 sq in |
| 50 sq ft | 7,200 sq in |
| 100 sq ft | 14,400 sq in |
| 250 sq ft | 36,000 sq in |
| 500 sq ft | 72,000 sq in |
| 1,000 sq ft | 144,000 sq in |
About this conversion
Area conversions are everyday maths in Singapore property: HDB flats are listed in square metres while condo listings and PSF prices use square feet.
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.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
Frequently asked questions
How many square inches are in one square feet?
1 sq ft = 144 sq in.
How do I convert sq ft to sq in?
Square inches = square feet × 144.