Convert Acres to Square Feet

Enter the area in acres below to get the value converted to square feet.

Results in Square Feet:
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1 ac = 43,560 sq ft

How to Convert Acres to Square Feet

Calculators can be used to convert measurements from one unit to another

To convert an acre measurement to a square foot measurement, multiply the area by the conversion ratio. One acre is equal to 43,560 square feet, so use this simple formula to convert:

square feet = acres × 43,560

The area in square feet is equal to the acres multiplied by 43,560.

For example, here's how to convert 5 acres to square feet using the formula above.
5 ac = (5 × 43,560) = 217,800 sq ft

Acres and square feet are both units used to measure area. Keep reading to learn more about each unit of measure.


One acre is defined as the area equal to a space that is one chain (66 ft) by one furlong (660 ft), or 10 square chains. That's equal to 43,560 square feet for those unfamiliar with those units of measure.

The acre is a US customary and imperial unit of area. Acres can be abbreviated as ac, for example 1 acre can be written as 1 ac.

Try our acreage calculator to find the area of a plot of land in acres by locating the boundaries on a map.

Square Feet

One square foot is equal to the area of a square with sides that are 1 foot in length. One square foot is roughly equal to 144 square inches.

The square foot is a US customary and imperial unit of area. A square foot is sometimes also referred to as a square ft. Square feet can be abbreviated as sq ft, and are also sometimes abbreviated as ft². For example, 1 square foot can be written as 1 sq ft or 1 ft².

Try our square footage calculator to calculate the area of a space.

Acre Measurements and Equivalent Square Foot Conversions

Common acre values converted to the equivalent square foot value
Acres Square Feet
1 ac 43,560 sq ft
2 ac 87,120 sq ft
3 ac 130,680 sq ft
4 ac 174,240 sq ft
5 ac 217,800 sq ft
6 ac 261,360 sq ft
7 ac 304,920 sq ft
8 ac 348,480 sq ft
9 ac 392,040 sq ft
10 ac 435,600 sq ft
11 ac 479,160 sq ft
12 ac 522,720 sq ft
13 ac 566,280 sq ft
14 ac 609,840 sq ft
15 ac 653,400 sq ft
16 ac 696,960 sq ft
17 ac 740,520 sq ft
18 ac 784,080 sq ft
19 ac 827,640 sq ft
20 ac 871,200 sq ft
21 ac 914,760 sq ft
22 ac 958,320 sq ft
23 ac 1,001,880 sq ft
24 ac 1,045,440 sq ft
25 ac 1,089,000 sq ft
26 ac 1,132,560 sq ft
27 ac 1,176,120 sq ft
28 ac 1,219,680 sq ft
29 ac 1,263,240 sq ft
30 ac 1,306,800 sq ft
31 ac 1,350,360 sq ft
32 ac 1,393,920 sq ft
33 ac 1,437,480 sq ft
34 ac 1,481,040 sq ft
35 ac 1,524,600 sq ft
36 ac 1,568,160 sq ft
37 ac 1,611,720 sq ft
38 ac 1,655,280 sq ft
39 ac 1,698,840 sq ft
40 ac 1,742,400 sq ft

More Acre Area Conversions

US Customary
Convert to Square Miles
1 ac is equal to 0.001563 square miles
Convert to Square Yards
1 ac is equal to 4,840 square yards
Convert to Square Inches
1 ac is equal to 6,272,640 square inches
SI Units
Convert to Square Kilometers
1 ac is equal to 0.004047 square kilometers
Convert to Square Meters
1 ac is equal to 4,046.86 square meters
Convert to Square Centimeters
1 ac is equal to 40,468,564.2 square centimeters
Convert to Square Millimeters
1 ac is equal to 4,046,856,422.4 square millimeters
Other Metric Units
Convert to Hectares
1 ac is equal to 0.404686 hectares
Convert to Ares
1 ac is equal to 40.468564 ares