Convert Square Kilometers to Acres

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

Results in Acres:
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1 sq km = 247.105381 ac

How to Convert Square Kilometers to Acres

conversion scale showing square kilometers and equivalent acres area values

To convert a square kilometer measurement to a acre measurement, multiply the area by the conversion ratio. One square kilometer is equal to 247.105381 acres, so use this simple formula to convert:

acres = square kilometers × 247.105381

The area in acres is equal to the square kilometers multiplied by 247.105381.

For example, here's how to convert 5 square kilometers to acres using the formula above.
5 sq km = (5 × 247.105381) = 1,235.526907 ac

Square kilometers and acres are both units used to measure area. Keep reading to learn more about each unit of measure.

Square Kilometers

One square kilometer is equal to the area of a square with sides that are 1 kilometer in length.

The square kilometer, or square kilometre, is a multiple of the square meter, which is the SI derived unit for area. In the metric system, "kilo" is the prefix for 103. A square kilometer is sometimes also referred to as a square km. Square kilometers can be abbreviated as sq km, and are also sometimes abbreviated as km². For example, 1 square kilometer can be written as 1 sq km or 1 km².


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 Kilometer Measurements and Equivalent Acre Conversions

Common square kilometer values converted to the equivalent acre value
Square Kilometers Acres
1 sq km 247.11 ac
2 sq km 494.21 ac
3 sq km 741.32 ac
4 sq km 988.42 ac
5 sq km 1,236 ac
6 sq km 1,483 ac
7 sq km 1,730 ac
8 sq km 1,977 ac
9 sq km 2,224 ac
10 sq km 2,471 ac
11 sq km 2,718 ac
12 sq km 2,965 ac
13 sq km 3,212 ac
14 sq km 3,459 ac
15 sq km 3,707 ac
16 sq km 3,954 ac
17 sq km 4,201 ac
18 sq km 4,448 ac
19 sq km 4,695 ac
20 sq km 4,942 ac
21 sq km 5,189 ac
22 sq km 5,436 ac
23 sq km 5,683 ac
24 sq km 5,931 ac
25 sq km 6,178 ac
26 sq km 6,425 ac
27 sq km 6,672 ac
28 sq km 6,919 ac
29 sq km 7,166 ac
30 sq km 7,413 ac
31 sq km 7,660 ac
32 sq km 7,907 ac
33 sq km 8,154 ac
34 sq km 8,402 ac
35 sq km 8,649 ac
36 sq km 8,896 ac
37 sq km 9,143 ac
38 sq km 9,390 ac
39 sq km 9,637 ac
40 sq km 9,884 ac

More Square Kilometer Area Conversions

US Customary
Convert to Square Miles
1 sq km is equal to 0.386102 square miles
Convert to Square Yards
1 sq km is equal to 1,195,990 square yards
Convert to Square Feet
1 sq km is equal to 10,763,910.4 square feet
Convert to Square Inches
1 sq km is equal to 1,550,003,100 square inches
SI Units
Convert to Square Meters
1 sq km is equal to 1,000,000 square meters
Convert to Square Centimeters
1 sq km is equal to 10,000,000,000 square centimeters
Convert to Square Millimeters
1 sq km is equal to 1,000,000,000,000 square millimeters
Other Metric Units
Convert to Hectares
1 sq km is equal to 100 hectares
Convert to Ares
1 sq km is equal to 10,000 ares