About the Units
gigameter (Gm)
A length unit equal to 10^9 meters.
millimeter (mm)
A tiny length unit equal to 0.001 meters, used in precision engineering.
Common Conversions
- 1 Gm = 999999900000.0 mm
- 1e-12 Gm = 1 mm
Convert from gigameters to millimeters
Conversion Information
To convert from gigameters to millimeters, multiply by 999999900000.0
1 Gm = 999999900000.0 mm