UnitConvConvert
Area

Convert square kilometers to acres

1 km²=247.105ac

Use the converter below to change any square kilometers value into acres instantly — with formula, conversion table, and real-world examples.

247.1054

Conversion formula

Forward
acres = square kilometers × 247.105
Reverse
square kilometers = acres × 0.004047

Example: 10 km² × 247.105 = 2,471.05 ac.

About both units

From

Square Kilometer

km²

The square kilometre equals 1,000,000 m² or 100 hectares. It is used for city, region and country areas. Greater London is about 1572 km². The smallest sovereign countries (Monaco, Vatican City) are under 3 km² each.

Real-world: Greater London is 1572 km². France is 643,801 km². The Serengeti National Park is 14,763 km².
Read full square kilometer reference →
To

Acre

ac

The acre equals 4046.86 square metres — originally the area a team of oxen could plough in a day. It is the standard rural land unit in the US, UK and Canada. Suburban American lots are typically a quarter to half an acre. 640 acres equal one square mile.

Real-world: A US suburban lot is 0.25–0.5 acre. A standard UK rural property might be 5 acres. A football pitch is about 1.8 acres.
Read full acre reference →

Square Kilometer to Acre conversion table

Common square kilometers to acres values for quick reference.

Square Kilometer (km²)Acre (ac)
1 km²247.105 ac
5 km²1,235.53 ac
10 km²2,471.05 ac
50 km²12,355.27 ac
100 km²24,710.54 ac
500 km²123,552.69 ac
1,000 km²247,105.38 ac
5,000 km²1,235,526.91 ac
10,000 km²2,471,053.81 ac
50,000 km²12,355,269.07 ac

Tips & common mistakes

Quick tips

  • 1 km² = 100 hectares = 1,000,000 m².
  • 1 km² = 0.386 square miles.
  • Multiply km × km in metric to get km² — but always keep consistent units.

Avoid these

  • Mixing km² and km when comparing geography — 10 km is a length, 10 km² is an area.
  • Confusing km² with the square mile (mi²) in international comparisons.
  • Reading "million km²" as "km²" on continental-scale maps — factor of 10⁶.

Frequently asked questions

How many acres in a square kilometer?
One square kilometer equals 247.105 acres.
How do I convert square kilometers to acres?
Multiply the square kilometer value by 247.105 to get the equivalent in acres.
What is 100 square kilometers in acres?
100 square kilometers equals 24,710.54 acres.
Is a square kilometer bigger than a acre?
Yes. 1 square kilometer equals 247.105 acres, so one square kilometer is larger.
How to convert square kilometers to acres without a calculator?
Multiply by 247.11 for a quick estimate; use a calculator for precise results.

Related area conversions

📊 See full comparison matrix →

More from Square Kilometer

km² → m²
1 = 1,000,000 m²
km² → cm²
1 = 10,000,000,000 cm²
km² → mm²
1 = 1,000,000,000,000 mm²
km² → ha
1 = 100 ha
km² → ft²
1 = 10,763,910.42 ft²
km² → in²
1 = 1,550,003,100.01 in²
km² → yd²
1 = 1,195,990.05 yd²
km² → mi²
1 = 0.3861 mi²

More to Acre

m² → ac
1 = 0.0002471 ac
cm² → ac
1 = 2.4711e-8 ac
mm² → ac
1 = 2.4711e-10 ac
ha → ac
1 = 2.47105 ac
ft² → ac
1 = 2.2957e-5 ac
in² → ac
1 = 1.5942e-7 ac
yd² → ac
1 = 0.0002066 ac
mi² → ac
1 = 640 ac

Conversions in other categories

WeightKilogram → PoundLengthKilometer → MileTemperatureCelsius → FahrenheitVolumeLiter → US GallonSpeedKilometer per Hour → Mile per HourEnergyKilojoule → KilocaloriePressureBar → Pound per Square InchPowerKilowatt → Mechanical Horsepower