Square Kilometer to Are Converter

Area · unit-converter

Convert Square Kilometer to Are with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use square-meter-based definitions (international feet / yard standards, acre, hectare, and regional units like pyeong/tsubo).

Calculator

From: Square Kilometer (km2)

To: Are (a)

About Square Kilometer

The square kilometer is a metric unit equal to one million square meters. It is standard for city sizes, large properties, and regional planning in metric countries.

About Are

The are is 100 m². It is a metric land-area unit that sits between square meters and hectares.

How to convert square kilometers to ares

1 square kilometer is equal to 10000 are:

1 km2 = (1000000 m² ÷ 100 m²) a = 10000 a

Each square kilometer is defined as 1000000 m² and each are as 100 m², so one km2 equals 1000000 ÷ 100 a = 10000 a.

Let a(km2) be the numeric value of the same area measured in Square Kilometer (km2), and a(a) the value in Are (a). Then:

a(a) = a(km2) × (1000000 / 100)

Equivalently, divide by how many km2 fit into one a (m² per a divided by m² per km2):

a(a) = a(km2) ÷ 0.0001

Or: are = square kilometer ÷ 0.0001

Examples

Example #1: Convert 20 km2 to are

20 km2 = 20 km2 × (1000000/100) a = 200000 a

20 km2 = 20 km2 ÷ 0.0001 = 200000 a

Example #2: Convert 50 km2 to are

50 km2 = 50 km2 × (1000000/100) a = 500000 a

50 km2 = 50 km2 ÷ 0.0001 = 500000 a

Summary

To convert Square Kilometer to Are, multiply the value in km2 by the ratio of square meters per km2 divided by square meters per a. Equivalently: value_a = value_km2 × (1000000 / 100). Numerically, 1 km2 equals 10000 a.

Relationship context

Both units are metric (SI) and tied to the square meter. Conversions use exact ratios from their m² definitions. The factor from Square Kilometer to Are is 1.000000e+4 (1 km2 = 10000 a).

Conversion tables

Square Kilometer (km2)Are (a)
0.11,000
110,000
220,000
330,000
440,000
550,000
660,000
770,000
880,000
990,000
Square Kilometer (km2)Are (a)
10100,000
20200,000
30300,000
40400,000
50500,000
60600,000
70700,000
80800,000
90900,000
1001,000,000