About the Units
megameter (Mm)
A length unit equal to 10^6 meters.
gigameter (Gm)
A length unit equal to 10^9 meters.
Common Conversions
- 1 Mm = 0.001 Gm
- 1000.0 Mm = 1 Gm
Convert from megameters to gigameters
Conversion Information
To convert from megameters to gigameters, multiply by 0.001
1 Mm = 0.001 Gm