square kilometer (km²)
1,000,000 square meters. Used for large geographical areas.
The square kilometer (km²) is a metric unit of area equal to a square with sides of one kilometer. It corresponds to one million square meters.
Convert Area
Here you can convert units like square kilometer, square hectometer, hectare, square dekameter, etc. within the area category.
Only numbers are allowed. Use the selected decimal separator.
Only numbers are allowed. Use the selected decimal separator.
All units in this category
Edit any value and every other unit updates instantly.
| Unit | Value | Actions |
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square hectometer
hm²
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square dekameter
dam²
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square decimeter
dm²
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square millimeter
mm²
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square micrometer
µm²
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square nanometer
nm²
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| Unit | Value | Actions |
|---|---|---|
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tunnland
tunnland
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skappland
skäppland
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| Unit | Value | Actions |
|---|---|---|
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township
township
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homestead
homestead
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rood
rood
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square rod
rod²
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square
square
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square yard
yd²
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square inch
in²
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| Unit | Value | Actions |
|---|---|---|
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cho
cho
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tann
tann
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se
se
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tsubo
tsubo
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Quick conversion quiz
Score:
0
130 square kilometer equals 1.41e+5 rood.
17.6 square hectometer equals 3.14e+8 square inch.
104 square yard equals 0.87 square dekameter.
Definitions
hectare (ha)
10,000 square meters. Common for land measurement.
The hectare (ha) is a non-SI metric unit of area equal to a square with 100-meter sides (10,000 m²). It is primarily used in the measurement of land.
square meter (m²)
The SI derived unit of area.
The square meter (m²) is the SI derived unit of area. It is defined as the area of a square with sides of one meter.
square mile (mi²)
640 acres. Standard unit for large areas in US/UK.
The square mile is an imperial and US customary unit of area equal to 640 acres or 2.59 square kilometers.
acre (acre)
Traditional unit of land area, approx 0.4 hectares.
The acre is a unit of land area used in the imperial and US customary systems. It is traditionally defined as the area of one chain by one furlong (66 by 660 feet). One acre is approximately 4,047 square meters.
square foot (ft²)
144 square inches. Common for real estate.
The square foot is an imperial unit of area widely used in the United States and UK for real estate and floor plans.