Square Footage of a 12 × 40 ft Rectangle

"Square Footage Calculator" Calculator

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How many square feet is 12 × 40 ft?

Answer

A rectangle of 12 × 40 ft covers
480 square feet

Any rectangle 12 ft wide and 40 ft long covers 480 square feet. The order of the sides makes no difference — 12 × 40 and 40 × 12 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:

12 ft × 40 ft

=

12 × 40

=

480 square feet

12 × 40 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 480 square feet
Square meters 44.59 m²
Square yards 53.33 yd²
Perimeter 104 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

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 12 × 40 ft? (The answer is: 480 square feet). Enter the width (e.g. 12 ft) and the length (e.g. 40 ft) in feet — half-feet and decimals such as 10.5 are accepted.

"Square Footage Calculator" Calculator

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Square Footage for a 12 ft Side

SizeSquare FeetSquare Meters
12 × 21 ft252 square feet23.41 m²
12 × 22 ft264 square feet24.53 m²
12 × 23 ft276 square feet25.64 m²
12 × 24 ft288 square feet26.76 m²
12 × 25 ft300 square feet27.87 m²
12 × 26 ft312 square feet28.99 m²
12 × 27 ft324 square feet30.1 m²
12 × 28 ft336 square feet31.22 m²
12 × 29 ft348 square feet32.33 m²
12 × 30 ft360 square feet33.45 m²
12 × 31 ft372 square feet34.56 m²
12 × 32 ft384 square feet35.67 m²
12 × 33 ft396 square feet36.79 m²
12 × 34 ft408 square feet37.9 m²
12 × 35 ft420 square feet39.02 m²
12 × 36 ft432 square feet40.13 m²
12 × 37 ft444 square feet41.25 m²
12 × 38 ft456 square feet42.36 m²
12 × 39 ft468 square feet43.48 m²
12 × 40 ft480 square feet44.59 m²
12 × 42 ft504 square feet46.82 m²
12 × 44 ft528 square feet49.05 m²
12 × 46 ft552 square feet51.28 m²
12 × 48 ft576 square feet53.51 m²
12 × 50 ft600 square feet55.74 m²
12 × 55 ft660 square feet61.32 m²
12 × 60 ft720 square feet66.89 m²
12 × 70 ft840 square feet78.04 m²
12 × 80 ft960 square feet89.19 m²
12 × 100 ft1,200 square feet111.48 m²

FAQ

How many square feet is 12 × 40 ft?

A rectangle of 12 × 40 ft covers 480 square feet

Is 12 × 40 ft the same as 40 × 12?

Yes. It makes no difference which side you call the width: 12 × 40 and 40 × 12 both come to 480 square feet.

How much material covers 12 × 40 ft?

To cover 480 square feet allow about 528 square feet of flooring, turf or tile — roughly 10% extra for cuts, offcuts and pattern matching.

What is the perimeter of 12 × 40 ft?

The perimeter is 104 ft: add the two sides and double the total. It is the figure to use for skirting, edging or fencing, and it tells apart shapes that share the same 480 square feet.

See Also