Square Footage of a 4 × 20 ft Rectangle
"Square Footage Calculator" Calculator
How many square feet is 4 × 20 ft?
Answer
A rectangle of 4 × 20 ft covers
80 square feet
Any rectangle 4 ft wide and 20 ft long covers 80 square feet. The order of the sides makes no difference — 4 × 20 and 20 × 4 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:
4 ft × 20 ft
=4 × 20
=80 square feet
4 × 20 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 | 80 square feet |
| Square meters | 7.43 m² |
| Square yards | 8.89 yd² |
| Perimeter | 48 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 4 ft Side
| Size | Square Feet | Square Meters |
|---|---|---|
| 4 × 5 ft | 20 square feet | 1.86 m² |
| 4 × 6 ft | 24 square feet | 2.23 m² |
| 4 × 7 ft | 28 square feet | 2.6 m² |
| 4 × 8 ft | 32 square feet | 2.97 m² |
| 4 × 9 ft | 36 square feet | 3.34 m² |
| 4 × 10 ft | 40 square feet | 3.72 m² |
| 4 × 11 ft | 44 square feet | 4.09 m² |
| 4 × 12 ft | 48 square feet | 4.46 m² |
| 4 × 13 ft | 52 square feet | 4.83 m² |
| 4 × 14 ft | 56 square feet | 5.2 m² |
| 4 × 15 ft | 60 square feet | 5.57 m² |
| 4 × 16 ft | 64 square feet | 5.95 m² |
| 4 × 17 ft | 68 square feet | 6.32 m² |
| 4 × 18 ft | 72 square feet | 6.69 m² |
| 4 × 19 ft | 76 square feet | 7.06 m² |
| 4 × 20 ft | 80 square feet | 7.43 m² |
| 4 × 21 ft | 84 square feet | 7.8 m² |
| 4 × 22 ft | 88 square feet | 8.18 m² |
| 4 × 23 ft | 92 square feet | 8.55 m² |
| 4 × 24 ft | 96 square feet | 8.92 m² |
| 4 × 25 ft | 100 square feet | 9.29 m² |
| 4 × 26 ft | 104 square feet | 9.66 m² |
| 4 × 27 ft | 108 square feet | 10.03 m² |
| 4 × 28 ft | 112 square feet | 10.41 m² |
| 4 × 29 ft | 116 square feet | 10.78 m² |
| 4 × 30 ft | 120 square feet | 11.15 m² |
| 4 × 31 ft | 124 square feet | 11.52 m² |
| 4 × 32 ft | 128 square feet | 11.89 m² |
| 4 × 33 ft | 132 square feet | 12.26 m² |
| 4 × 34 ft | 136 square feet | 12.63 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 4 × 20 ft? (The answer is: 80 square feet). Enter the width (e.g. 4 ft) and the length (e.g. 20 ft) in feet — half-feet and decimals such as 10.5 are accepted.