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Square Kilometers to Acres Converter

1 square kilometer = 247.1053815 ac. Enter any value to convert square kilometers (km²) to acres (ac), or use the table below for common values.

Results

1 km² =247.1053815 acsquare kilometers → acres
1 km²247.1053815 ac
1 ac0.004046856422 km²
Formula
ac = km² × 247.1053815
1 km² in other units
UnitValue
square meters (m²)1,000,000
square inches (in²)1,550,003,100
square feet (ft²)10,763,910.42
square yards (yd²)1,195,990.046
square miles (mi²)0.3861021585
acres (ac)247.1053815
hectares (ha)100

Formula

ac = km² × 247.1053815

Example: 10 km² = 2,471.053815 ac. To convert the other way, use km² = ac × 0.004046856422.

Quick mental estimate: multiply by about 250.

Square Kilometers to Acres conversion table

Square Kilometers (km²)Acres (ac)
1 km²247.1053815 ac
2 km²494.2107629 ac
3 km²741.3161444 ac
4 km²988.4215259 ac
5 km²1,235.526907 ac
6 km²1,482.632289 ac
7 km²1,729.73767 ac
8 km²1,976.843052 ac
9 km²2,223.948433 ac
10 km²2,471.053815 ac
15 km²3,706.580722 ac
20 km²4,942.107629 ac
25 km²6,177.634537 ac
30 km²7,413.161444 ac
40 km²9,884.215259 ac
50 km²12,355.26907 ac
75 km²18,532.90361 ac
100 km²24,710.53815 ac
250 km²61,776.34537 ac
500 km²123,552.6907 ac
1,000 km²247,105.3815 ac

About square kilometers and acres

The square kilometer equals one million square meters, used for the areas of cities, countries and lakes.

The acre is 43,560 square feet (about 4,047 m²), the traditional unit for farmland and building plots in the US and UK.

Other Area conversions

Acres → Square KilometersReverse conversionSquare Meters → Acresm² → acSquare Kilometers → Square Meterskm² → m²Square Kilometers → Square Incheskm² → in²Square Kilometers → Square Feetkm² → ft²Square Kilometers → Square Yardskm² → yd²Square Kilometers → Square Mileskm² → mi²Square Kilometers → Hectareskm² → haSquare Inches → Acresin² → acSquare Feet → Acresft² → acSquare Yards → Acresyd² → acSquare Miles → Acresmi² → acHectares → Acresha → ac

Frequently asked questions

How do I convert square kilometers to acres?

Use the formula ac = km² × 247.1053815. For example, 10 km² = 2,471.053815 ac.

What is 1 square kilometer in acres?

1 km² = 247.1053815 ac.

How do I convert acres back to square kilometers?

Use km² = ac × 0.004046856422. 1 ac = 0.004046856422 km².