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Convert square feet to acres, acres to square feet

Convert ft2 to acres

ft2
acres

Convert acres to ft2

acres
ft2

How to convert ft2 to acres : Use the conversion calculator titled "Convert ft2 to acres". Enter a value in the ft2 field and click on the "Calculate acres" button. Your answer will appear in the acres field.

How to convert acres to ft2 : Use the conversion calculator titled "Convert acres to ft2". Enter a value in the acres field and click on the "Calculate square feet" button. Your answer will appear in the ft2 field.

Conversion Formulas

Let's take a closer look at the conversion formulas so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.

The formula to convert from ft2 to acres is:

acres = ft2 ÷ 43,560

The formula to convert from acres to ft2 is:

ft2 = acres x 43,560

Conversion Examples

Next, let's look at some examples showing the work and calculations that are involved in converting between square feet (ft2) and acres (ac).

Square Feet to Acres Conversion Example

Task: Convert 250,000 square feet to acres (show work)

Formula:
ft2 ÷ 43,560 = acres

Calculations:
250,000 ft2 ÷ 43,560 = 5.7392 acres

Result:
250,000 ft2 is equal to 5.7392 acres

Acres to Square Feet Conversion Example

Task: Convert 20 acres to square feet (show work)

Formula:
acres x 43,560 = ft2

Calculations:
20 acres x 43,560 = 871,200 ft2

Result:
20 acres is equal to 871,200 ft2

Conversion Tables

For quick reference purposes, below are conversion tables that you can use to convert from ft2 to acres, and acres to ft2.

Square Feet to Acres Conversion Chart

square feet (ft2) acres (ac)
1 ft2 0.00002 acres
100 ft2 0.0023 acres
250 ft2 0.00574 acres
500 ft2 0.01148 acres
750 ft2 0.01722 acres
1,000 ft2 0.02296 acres
2,500 ft2 0.05739 acres
5,000 ft2 0.11478 acres
10,000 ft2 0.22957 acres
25,000 ft2 0.57392 acres
50,000 ft2 1.14784 acres
100,000 ft2 2.29568 acres
250,000 ft2 5.7392 acres
500,000 ft2 11.4784 acres
750,000 ft2 17.2176 acres
1,000,000 ft2 22.9568 acres

Acres to Square Feet Conversion Chart

acres (ac) square feet (ft2)
1 acre 43,560 ft2
2 acres 87,120 ft2
3 acres 130,680 ft2
4 acres 174,240 ft2
5 acres 217,800 ft2
6 acres 261,360 ft2
7 acres 304,920 ft2
8 acres 348,480 ft2
9 acres 392,040 ft2
10 acres 435,600 ft2
15 acres 653,400 ft2
20 acres 871,200 ft2
25 acres 1,089,000 ft2
50 acres 2,178,000 ft2
75 acres 3,267,000 ft2
100 acres 4,356,000 ft2

Conversion Definitions

The following is a list of definitions relating to conversions between square feet and square acres.

What is a square foot (ft2)?

A square foot is a unit of area in both US Customary Units as well as the Imperial System. The symbol for square foot is ft2 or sq ft. There are 144 square inches in a square foot. A square foot is calculated as the area of a square that has 1 foot on each side.

What is an acre (ac)?

An acre is a unit of area in both US Customary Units as well as the Imperial System. The symbol for acre is ac. There are 4,840 square yards in an acre or 43,560 square feet in an acre.

How many square feet in an acre?

There are 43,560 square feet in an acre.

How many acres in a square foot?

There are 0.00002 acres in a square foot.

Understanding the Area Units

This table provides a summary of the Area units within their respective measurement systems.

Unit Symbol Measurement System Description
square inches in2 or sq in US Customary Units/Imperial System  
square feet ft2 or sq ft US Customary Units/Imperial System 1 ft2 = 144 in2
square yards yd2 or sq yd US Customary Units/Imperial System 1 yd2 = 9 ft2
acres ac US Customary Units/Imperial System 1 ac = 4,840 yd2
square miles mi2 or sq mi US Customary Units/Imperial System 1 mi2 = 640 ac
square millimeters mm2 Metric System
square centimeters cm2 Metric System 1 cm2 = 100 mm2
square decimeters dm2 Metric System 1 dm2 = 100 cm2
square meters m2 Metric System 1 m2 = 100 dm2
hectares ha Metric System 1 ha = 10,000 m2
square kilometer km2 Metric System 1 km2 = 100 ha