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Square kilometers to Square meters Converter

1 km² = 1000000 m² (square kilometer → square meter)

1 km² = 1000000 m²

1 square kilometer equals 1000000 square meters. To convert square kilometers to square meters, multiply the square kilometer value by 1000000. For quick reference: 1 km² = 1000000 m², 5 km² = 5000000 m², 10 km² = 10000000 m², 100 km² = 100000000 m².

When to use square kilometers → square meters

Square kilometers to square meters multiplies by 1,000,000. A 2.5 km² nature reserve is 2,500,000 m². The conversion is exact but the numbers get unwieldy fast, which is why intermediate land areas are usually quoted in hectares instead (1 km² = 100 ha). Go all the way down to m² only when a calculation demands it — density figures, for instance, are usually per km², not per m².

Urban density calculations — population per square kilometer at the city level, but building footprints and public space at the square-meter level — require moving between the two constantly: 0.5 km² is 500,000 m², 1.2 km² is 1,200,000 m², and 0.05 km² is 50,000 m². Because the factor is a flat million, planners typically keep figures in km² for city-wide comparisons and only expand to square meters when detailing a specific district or site.

How to convert square kilometers to square meters

  1. Take your value

    Start with your value in square kilometers.

  2. Multiply by 1000000

    Multiply the square kilometer value by 1000000. This is the exact conversion factor from square kilometers to square meters.

  3. Read the result

    The product is your value in square meters. For example, 5 km² × 1000000 = 5000000 m².

Conversion formula

The exact factor from square kilometers to square meters is 1000000.

Square meters = Square kilometers × 1000000

Square kilometers to Square meters conversion table

Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.

Conversion table from square kilometers to square meters
Square kilometers (km²)Square meters (m²)
0.1 km²100000 m²
0.25 km²250000 m²
0.5 km²500000 m²
1 km²1000000 m²
2 km²2000000 m²
3 km²3000000 m²
4 km²4000000 m²
5 km²5000000 m²
6 km²6000000 m²
7 km²7000000 m²
8 km²8000000 m²
9 km²9000000 m²
10 km²10000000 m²
12 km²12000000 m²
15 km²15000000 m²
20 km²20000000 m²
25 km²25000000 m²
30 km²30000000 m²
40 km²40000000 m²
50 km²50000000 m²
60 km²60000000 m²
70 km²70000000 m²
75 km²75000000 m²
80 km²80000000 m²
90 km²90000000 m²
100 km²100000000 m²
120 km²120000000 m²
150 km²150000000 m²
200 km²200000000 m²
250 km²250000000 m²
300 km²300000000 m²
400 km²400000000 m²
500 km²500000000 m²
600 km²600000000 m²
750 km²750000000 m²
800 km²800000000 m²
1000 km²1000000000 m²
1200 km²1200000000 m²
1500 km²1500000000 m²
2000 km²2000000000 m²
2500 km²2500000000 m²
3000 km²3000000000 m²
4000 km²4000000000 m²
5000 km²5000000000 m²
7500 km²7500000000 m²
10000 km²10000000000 m²
20000 km²20000000000 m²
50000 km²50000000000 m²
100000 km²100000000000 m²
1000000 km²1000000000000 m²

Real-world reference

Manhattan is about 59 km². Lake Geneva is about 580 km². In square meters, that gives you: 1 km² = 1000000 m², 10 km² = 10000000 m², 100 km² = 100000000 m².

Frequently asked questions

How many square meters are in 1 square kilometer?
1 square kilometer equals 1000000 square meters.
How do I convert square kilometers to square meters?
Multiply the square kilometer value by 1000000. So x km² × 1000000 = the equivalent in m².
What is 5 square kilometers in square meters?
5 square kilometers equals 5000000 square meters.
What is 10 square kilometers in square meters?
10 square kilometers equals 10000000 square meters.
What is 100 square kilometers in square meters?
100 square kilometers equals 100000000 square meters.
How do I convert back from square meters to square kilometers?
Multiply the square meter value by 1.0000 × 10^−6. For example, 1 m² = 1.0000 × 10^−6 km².
Is the square kilometer bigger than the square meter?
Yes. 1 square kilometer is larger than 1 square meter — specifically 1000000 times larger.
Are these conversion factors exact?
The factor is derived directly from the SI definitions of square kilometer and square meter; the displayed value is rounded for readability, and the browser computes using IEEE 754 double-precision arithmetic.

About the square kilometer and the square meter

The square kilometer

The square kilometer equals one million square meters — the standard unit for city, region, and country areas in metric countries. Manhattan is about 59 km²; Istanbul is about 5,461 km²; Turkey is about 783,562 km². One km² equals exactly 100 hectares or about 0.386 square miles.

The square meter

The square meter is the SI unit of area — the area of a square one meter on each side. It's the standard for apartment and house listings in nearly every metric country, for material quantities (flooring, paint coverage), and for all scientific work. A typical parking space is about 12 m²; a singles tennis court is about 195 m².

Sources