How many gigametre in 1 millimetre?
The answer is 1.0E-12.
We assume you are converting between gigametre and millimetre.
You can view more details on each measurement unit: gigametre or
millimetre
The SI base unit for length is the metre.
1 metre is equal to 1.0E-9 gigametre, or 1000 millimetre.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between gigameters and millimetres.
Type in your own numbers in the form to convert the units!

››Quick conversion chart of gigametre to millimetre

1 gigametre to millimetre = 1000000000000 millimetre

2 gigametre to millimetre = 2000000000000 millimetre

3 gigametre to millimetre = 3000000000000 millimetre

4 gigametre to millimetre = 4000000000000 millimetre

5 gigametre to millimetre = 5000000000000 millimetre

6 gigametre to millimetre = 6000000000000 millimetre

7 gigametre to millimetre = 7000000000000 millimetre

8 gigametre to millimetre = 8000000000000 millimetre

9 gigametre to millimetre = 9000000000000 millimetre

10 gigametre to millimetre = 10000000000000 millimetre

››Want other units?

You can do the reverse unit conversion from
millimetre to gigametre, or enter any two units below:

A gigametre (American spelling: gigameter, symbol: Gm) is a unit of length equal to 10^9 metres. Its customary equivalent is 621,371 miles.

››Definition: Millimeter

A millimetre (American spelling: millimeter, symbol mm) is one thousandth of a metre, which is the International System of Units (SI) base unit of length. The millimetre is part of a metric system. A corresponding unit of area is the square millimetre and a corresponding unit of volume is the cubic millimetre.

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