## ››Convert gigametre to millimetre

 gigameter millimeter

How many gigameter in 1 millimeter? The answer is 1.0E-12.
We assume you are converting between gigametre and millimetre.
You can view more details on each measurement unit:
gigameter or millimeter
The SI base unit for length is the metre.
1 metre is equal to 1.0E-9 gigameter, or 1000 millimeter.
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 gigameter to millimeter

1 gigameter to millimeter = 1000000000000 millimeter

2 gigameter to millimeter = 2000000000000 millimeter

3 gigameter to millimeter = 3000000000000 millimeter

4 gigameter to millimeter = 4000000000000 millimeter

5 gigameter to millimeter = 5000000000000 millimeter

6 gigameter to millimeter = 6000000000000 millimeter

7 gigameter to millimeter = 7000000000000 millimeter

8 gigameter to millimeter = 8000000000000 millimeter

9 gigameter to millimeter = 9000000000000 millimeter

10 gigameter to millimeter = 10000000000000 millimeter

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

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## ››Definition: Gigameter

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.

## ››Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!