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Square kilometer to Acre Converter

Type a value — the answer appears instantly. 1 km² = 247.1054 ac.

Reviewed by the OmniCalc teamMethod verified 2026-07-01

From unit

To unit
Result

247.1054 acres

= 1,000,000 m²= 10,763,900 ft²

equals 247.1054 acres

Formula: ac = km² × 247.10538

Square kilometer to Acre formula

ac = km² × 247.10538

Convert 5 square kilometers to acres

  1. Start with 5 square kilometers.
  2. Multiply by the conversion factor: 5 × 247.105 = 1,235.527.
  3. So 5 km² = 1,235.527 ac.

Square kilometer to Acre conversion table

Square kilometer to Acre conversion table
Square kilometers (km²)Acres (ac)
0.01 km²2.471054 ac
0.1 km²24.71054 ac
0.25 km²61.77635 ac
0.5 km²123.5527 ac
1 km²247.1054 ac
2 km²494.2108 ac
3 km²741.3161 ac
4 km²988.4215 ac
5 km²1,235.527 ac
6 km²1,482.632 ac
7 km²1,729.738 ac
8 km²1,976.843 ac
9 km²2,223.948 ac
10 km²2,471.054 ac
15 km²3,706.581 ac
20 km²4,942.108 ac
25 km²6,177.635 ac
30 km²7,413.161 ac
40 km²9,884.215 ac
50 km²12,355.27 ac
75 km²18,532.9 ac
100 km²24,710.54 ac
250 km²61,776.35 ac
500 km²123,552.7 ac
1,000 km²247,105.4 ac
5,000 km²1,235,527 ac
10,000 km²2,471,054 ac

Unit definitions

What is a square kilometer?

The square kilometre is the area of a one-kilometre square, equal to one million square metres or 100 hectares. It is used for measuring cities, regions, and countries. One square kilometre is about 0.386 square miles.

What is a acre?

The acre is exactly 4840 square yards, about 4046.86 square metres or 0.405 hectares. It is the traditional unit for land area in the United States and United Kingdom. An acre was historically the area a yoke of oxen could plough in a day.

Frequently asked questions

How many acres are in one square kilometer?

One square kilometer equals 247.1054 acres (1 km² = 247.1054 ac).

How do I convert square kilometers to acres?

Multiply the value in square kilometers by 247.105. For example, 10 km² × 247.105 = 2,471.054 ac.

Which is bigger — a square kilometer or a acre?

A square kilometer is bigger: one square kilometer contains 247.1054 acres.

Is this square kilometer to acre converter free?

Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.

Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.