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

Convert Acres to Square Kilometers

Convert from acres to square kilometers with this simple formula:
square kilometers = acres × 0.004047
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1 Acre = 0.004047 Square Kilometers

Learn How to Convert Acres to Square Kilometers Using our Conversion Formula

Converting an acre area measurement to a square kilometer measurement involves multiplying your area by the conversion ratio to find the result. An acre is equal to 0.004047 square kilometers, so to convert simply multiply by 0.004047.

For example, 5ac = (5 × 0.004047) = 0.020234sq km.

Learn more about finding the area of your space using our area calculator.

Acres and square kilometers are both units used to measure area. Learn more about area and find more area measurement conversion calculators. An acre is an imperial measurement and can be abbreviated as ac, for example 1ac. A square kilometer is a metric measurement and can be abbreviated as sq km, for example 1sq km. Learn more about the metric system, including the common unit prefixes and how to convert between metric units.

acres and square kilometers are units used to measure area
Convert Square Kilometers to Acres

More Area Conversions

Convert to Square Miles Area
1ac is equal to 0.001562 square miles
Convert to Square Yards Area
1ac is equal to 4,840 square yards
Convert to Square Feet Area
1ac is equal to 43,560 square feet
Convert to Square Inches Area
1ac is equal to 6,272,592 square inches
Convert to Square Meters Area
1ac is equal to 4,047 square meters
Convert to Square Centimeters Area
1ac is equal to 40,468,253 square centimeters
Convert to Square Millimeters Area
1ac is equal to 4,046,825,252 square millimeters

Acre Measurements and Equivalent Square Kilometer Conversions

Common acre values converted to the equivalent square kilometer value
Acres Square Kilometers Acres Square Kilometers Acres Square Kilometers
1 0.004047 21 0.084983 41 0.16592
2 0.008094 22 0.08903 42 0.169967
3 0.01214 23 0.093077 43 0.174013
4 0.016187 24 0.097124 44 0.17806
5 0.020234 25 0.101171 45 0.182107
6 0.024281 26 0.105217 46 0.186154
7 0.028328 27 0.109264 47 0.190201
8 0.032375 28 0.113311 48 0.194248
9 0.036421 29 0.117358 49 0.198294
10 0.040468 30 0.121405 50 0.202341
11 0.044515 31 0.125452 51 0.206388
12 0.048562 32 0.129498 52 0.210435
13 0.052609 33 0.133545 53 0.214482
14 0.056656 34 0.137592 54 0.218529
15 0.060702 35 0.141639 55 0.222575
16 0.064749 36 0.145686 56 0.226622
17 0.068796 37 0.149733 57 0.230669
18 0.072843 38 0.153779 58 0.234716
19 0.07689 39 0.157826 59 0.238763
20 0.080937 40 0.161873 60 0.24281