Online calculator to convert square kilometers to acres (km2 to ac) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Area units.
Conversion Calculator
Enter your value in the conversion calculator below.
Convert km2 to acres
TIP: If the result of your conversion is 0, try increasing the "Decimals".
Conversion Definitions
The following is a list of definitions relating to conversions between square kilometers and acres.
What is a square kilometer (km2)?
A square kilometer is a unit of area in the Metric System. The symbol for square kilometer is km2. There are 0.00404685642 square kilometers in an acre. A square kilometer is calculated as the area of a square that has 1 kilometer on each side. The International spelling for this unit is square kilometre.
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 247.10538161 acres in a square kilometer.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from km2 to acres is:
acres = km2 ÷ 0.00404685642
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from square kilometers to acres (km2 to ac).
Square Kilometer to Acres Conversion Example
Task: Convert 16 square kilometers to acres (show work) Formula: km2 ÷ 0.00404685642 = acres Calculations: 16 km2 ÷ 0.00404685642 = 3,953.68610582 acres Result: 16 km2 is equal to 3,953.68610582 acres
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from km2 to acres.
Square Kilometers to Acres Conversion Chart
| square kilometers (km2) | acres (ac) |
|---|---|
| 1 km2 | 247.10538161 acres |
| 2 km2 | 494.21076323 acres |
| 3 km2 | 741.31614484 acres |
| 4 km2 | 988.42152645 acres |
| 5 km2 | 1,235.52690807 acres |
| 6 km2 | 1,482.63228968 acres |
| 7 km2 | 1,729.7376713 acres |
| 8 km2 | 1,976.84305291 acres |
| 9 km2 | 2,223.94843452 acres |
| 10 km2 | 2,471.05381614 acres |
| 20 km2 | 4,942.10763227 acres |
| 30 km2 | 7,413.16144841 acres |
| 40 km2 | 9,884.21526455 acres |
| 50 km2 | 12,355.26908069 acres |
| 75 km2 | 18,532.90362103 acres |
| 100 km2 | 24,710.53816137 acres |
| 250 km2 | 61,776.34540343 acres |
| 500 km2 | 123,552.69080686 acres |
| 750 km2 | 185,329.03621028 acres |
| 1,000 km2 | 247,105.38161371 acres |
| 2,500 km2 | 617,763.45403428 acres |
| 5,000 km2 | 1,235,526.90806856 acres |
| 7,500 km2 | 1,853,290.36210284 acres |
| 10,000 km2 | 2,471,053.81613712 acres |
| 25,000 km2 | 6,177,634.5403428 acres |
| 50,000 km2 | 12,355,269.0806856 acres |
| 75,000 km2 | 18,532,903.62102839 acres |
| 100,000 km2 | 24,710,538.16137119 acres |
| 250,000 km2 | 61,776,345.40342798 acres |
Related Units
This table provides a summary of the Area units within their respective measurement systems.
| Unit | Symbol | Measurement System |
|---|---|---|
| square inches | in2 or sq in | US Customary Units/Imperial System |
| square feet | ft2 or sq ft | US Customary Units/Imperial System |
| square yards | yd2 or sq yd | US Customary Units/Imperial System |
| acres | ac | US Customary Units/Imperial System |
| square miles | mi2 or sq mi | US Customary Units/Imperial System |
| square millimeters | mm2 | Metric System |
| square centimeters | cm2 | Metric System |
| square decimeters | dm2 | Metric System |
| square meters | m2 | Metric System |
| square decameters | dam2 | Metric System |
| square hectometers | hm2 | Metric System |
| hectares | ha | Metric System |
| square kilometers | km2 | Metric System |
Note: For area conversions, US Customary Units and the Imperial System are equivalent.
Advertisements