Square Footage of a 21 × 24 ft Rectangle
"Square Footage Calculator" Calculator
How many square feet is 21 × 24 ft?
Answer
A rectangle of 21 × 24 ft covers
504 square feet
Any rectangle 21 ft wide and 24 ft long covers 504 square feet. The order of the sides makes no difference — 21 × 24 and 24 × 21 are the same area.
How the Square Footage Is Calculated
Square feet = width (ft) × length (ft)
Area is a product, not a sum: a rectangle holds as many one-foot squares as its width multiplied by its length. Put this rectangle into it:
21 ft × 24 ft
=21 × 24
=504 square feet
21 × 24 ft in Other Units
The same rectangle expressed the other common ways. The perimeter is the figure to use for skirting, edging or fencing — and it is what tells this rectangle apart from other sizes with the same area.
| Square feet | 504 square feet |
| Square meters | 46.82 m² |
| Square yards | 56 yd² |
| Perimeter | 90 ft |
Note: this is floor area. Wall area is height × length for each wall, and a room that is not a plain rectangle has to be split into rectangles first and added up.
Related Calculations
See Also
- Square Feet to Square Meters (Sq Ft to Sq M) - Convert Square Feet to Square Meters
- Square Meters to Square Feet (Sq M to Sq Ft) - Convert Square Meters to Square Feet
- Square Inches to Square Centimeters - Convert Square Inches to Square Centimeters
- Square Centimeters to Square Inches - Convert Square Centimeters to Square Inches
- Square Feet to Acres - Convert Square Feet to Acres
- Acres to Square Feet - Convert Acres to Square Feet
- Square Kilometers to Square Miles - Convert Square Kilometers to Square Miles
- Square Miles to Square Kilometers - Convert Square Miles to Square Kilometers
- Acres to Hectares - Convert Acres to Hectares
- Hectares to Acres - Convert Hectares to Acres
- Square Meters to Hectares - Convert Square Meters to Hectares
- Hectares to Square Meters - Convert Hectares to Square Meters
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Square Footage for a 21 ft Side
| Size | Square Feet | Square Meters |
|---|---|---|
| 9 × 21 ft | 189 square feet | 17.56 m² |
| 10 × 21 ft | 210 square feet | 19.51 m² |
| 11 × 21 ft | 231 square feet | 21.46 m² |
| 12 × 21 ft | 252 square feet | 23.41 m² |
| 13 × 21 ft | 273 square feet | 25.36 m² |
| 14 × 21 ft | 294 square feet | 27.31 m² |
| 15 × 21 ft | 315 square feet | 29.26 m² |
| 16 × 21 ft | 336 square feet | 31.22 m² |
| 17 × 21 ft | 357 square feet | 33.17 m² |
| 18 × 21 ft | 378 square feet | 35.12 m² |
| 19 × 21 ft | 399 square feet | 37.07 m² |
| 20 × 21 ft | 420 square feet | 39.02 m² |
| 21 × 21 ft | 441 square feet | 40.97 m² |
| 21 × 22 ft | 462 square feet | 42.92 m² |
| 21 × 23 ft | 483 square feet | 44.87 m² |
| 21 × 24 ft | 504 square feet | 46.82 m² |
| 21 × 25 ft | 525 square feet | 48.77 m² |
| 21 × 26 ft | 546 square feet | 50.73 m² |
| 21 × 27 ft | 567 square feet | 52.68 m² |
| 21 × 28 ft | 588 square feet | 54.63 m² |
| 21 × 29 ft | 609 square feet | 56.58 m² |
| 21 × 30 ft | 630 square feet | 58.53 m² |
| 21 × 31 ft | 651 square feet | 60.48 m² |
| 21 × 32 ft | 672 square feet | 62.43 m² |
| 21 × 33 ft | 693 square feet | 64.38 m² |
| 21 × 34 ft | 714 square feet | 66.33 m² |
| 21 × 35 ft | 735 square feet | 68.28 m² |
| 21 × 36 ft | 756 square feet | 70.23 m² |
| 21 × 37 ft | 777 square feet | 72.19 m² |
| 21 × 38 ft | 798 square feet | 74.14 m² |
About "Square Footage Calculator" Calculator
This calculator works out the square footage of a rectangle from its two sides in feet. For example, it can help you find out how many square feet is 21 × 24 ft? (The answer is: 504 square feet). Enter the width (e.g. 21 ft) and the length (e.g. 24 ft) in feet — half-feet and decimals such as 10.5 are accepted.