How many square millimeter in 1 square gigameter?
The answer is 1.0E+24.
We assume you are converting between square millimetre and square gigametre.
You can view more details on each measurement unit:
square millimeter or square gigameter
The SI derived unit for area is the square meter.
1 square meter is equal to 1000000 square millimeter, or 1.0E-18 square gigameter.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between square millimeters and square gigameters.
Type in your own numbers in the form to convert the units!
You can do the reverse unit conversion from square gigameter to square millimeter, or enter any two units below:
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