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Square Miles and Acres Converter

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Use this calculator to convert square miles (mi²) to acres (ac) and acres to square miles. This converter is part of the full area converter tool.

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Acres to Square Miles Conversions

Acres Square Miles
1 acre 0.00156 square miles
2 acres 0.00313 square miles
3 acres 0.00469 square miles
4 acres 0.00625 square miles
5 acres 0.00781 square miles
6 acres 0.00938 square miles
7 acres 0.01094 square miles
8 acres 0.0125 square miles
9 acres 0.01406 square miles
10 acres 0.01563 square miles
11 acres 0.01719 square miles
12 acres 0.01875 square miles
13 acres 0.02031 square miles
14 acres 0.02188 square miles
15 acres 0.02344 square miles
16 acres 0.025 square miles
17 acres 0.02656 square miles
18 acres 0.02813 square miles
19 acres 0.02969 square miles
20 acres 0.03125 square miles
Figures rounded to a maximum of 5 decimal places (7 with smaller numbers).

How many square miles are there in 1 acre?

There are 0.0015625 square miles in 1 acre. To convert from acres to square miles, multiply your figure by 0.0015625 (or divide by 640) .

Square Miles to Acres Conversions

Square Miles Acres
1 square mile 640 acres
2 square miles 1280 acres
3 square miles 1920 acres
4 square miles 2560 acres
5 square miles 3200 acres
6 square miles 3840 acres
7 square miles 4480 acres
8 square miles 5120 acres
9 square miles 5760 acres
10 square miles 6400 acres
11 square miles 7040 acres
12 square miles 7680 acres
13 square miles 8320 acres
14 square miles 8960 acres
15 square miles 9600 acres
16 square miles 10240 acres
17 square miles 10880 acres
18 square miles 11520 acres
19 square miles 12160 acres
20 square miles 12800 acres
Figures rounded to a maximum of 5 decimal places (7 with smaller numbers).

How many acres are there in 1 square mile?

There are 640 acres in 1 square mile. To convert from square miles to acres, multiply your figure by 640 (or divide by 0.0015625) .

What is an acre?

The acre is a unit of land commonly employed within North America and the Caribbean. It is equal to 4,047 square metres or 43,560 square feet. This measurement is roughly equivalent to 40 per cent of a hectare. Interestingly enough, the acre can trace its roots back to mediaeval times. It was defined as the area that could be ploughed in a single day with the help of an ox. One acre is approximately 76 per cent the size of a football field. Many suburban lots are between one-quarter and one-fifth of an acre in size. You can find out more about acres in the article, how big is an acre?

What is a square mile?

Used within the United States and many other parts of the world, the square mile is one of the most common forms of measuring the area of land. It is defined as a square whose sides are each equivalent to one mile in length. One square mile is the same size as 2.59 square kilometers. There are 640 acres found within one square mile. One acre is somewhat approximated to the size of a football pitch. Aerial mapping, satellite imagery and global positioning systems will often employ square miles.

Other individual area converters

Ares and Acres, Cents and Acres, Hectares and Acres, Square Feet and Acres, Square Kilometers and Acres, Square Meters and Acres, Square Miles and Acres, Square Miles and Square Feet, Square Miles and Square Kilometers, Square Rods and Acres, Square Yards and Acres,

The History of the Calculator

From abacus to iPhones, learn how calculators developed over time.