How many square meters are in a square kilometer?

There are exactly 1,000,000 square meters in one square kilometer. This is because 1 kilometer = 1,000 meters, and when you square both sides, 1 km² = (1,000 m)² = 1,000,000 m².

How do I convert square meters to square kilometers?

Divide the number of square meters by 1,000,000 to get square kilometers. For example, 5,000,000 m² ÷ 1,000,000 = 5 km².

How do I convert square kilometers to square meters?

Multiply the number of square kilometers by 1,000,000 to get square meters. For example, 2.5 km² × 1,000,000 = 2,500,000 m².

What is the symbol for square meters and square kilometers?

The symbol for square meters is m² and the symbol for square kilometers is km². Both are units in the International System of Units (SI).

Is this converter accurate?

Yes. The conversion uses the exact factor of 1,000,000 with no rounding during calculation. Results are displayed rounded to a sensible number of decimal places for readability.

Square Meters to Square Kilometers Converter

Name: Square Meters to Square Kilometers Converter
Availability: InStock
Author: Nham Vu

Enter a value in square meters and instantly get the equivalent in square kilometers.

Square Meters (m²)

Enter the area in square meters

Result in km²:

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Square Kilometers (km²)

Enter the area in square kilometers

Result in m²:

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Conversion Reference

Square Meters (m²)	Square Kilometers (km²)
1 m²	0.000001 km²
1,000 m²	0.001 km²
10,000 m²	0.01 km²
100,000 m²	0.1 km²
500,000 m²	0.5 km²
1,000,000 m²	1 km²
5,000,000 m²	5 km²
10,000,000 m²	10 km²

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Summary

Enter a value in square meters and instantly get the equivalent in square kilometers.

How it works

Enter a value in the square meters (m²) field.
The converter divides the value by 1,000,000 to calculate square kilometers.
The result appears instantly in the square kilometers field.
You can also enter a value in km² to convert back to m².
Use the Copy button to copy either result to your clipboard.

Use cases

Converting land area measurements in geography or cartography projects.
Comparing city, country, or region sizes expressed in different units.
Converting real estate or land survey data from m² to km².
Academic or scientific work requiring consistent area units.
Urban planning calculations spanning large land areas.
Environmental studies measuring habitat or deforestation areas.

Frequently Asked Questions

Last updated: 2026-06-10 · Reviewed by Nham Vu