Square Millimeters to Square Kilometers
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sqmm
sqkm
Quick reference
| Square Millimeters (sqmm) | Square Kilometers (sqkm) |
|---|
Formula
Square Kilometers = square millimeters ÷ 1000000000000
Multiply the square millimeters value by 1e-12 to get square kilometers. To reverse — divide square kilometers by 1e-12 to get square millimeters.
About this conversion
The square millimeter (mm²) is a metric unit of area equal to 0.000001 square meters, used in electronics and precision engineering. Learn more →
The square kilometer (km²) is a metric unit of area equal to one million square meters. Learn more →
Source: NIST International Reference