Use this free online calculator to convert Gigameter to Megameter instantly. This metric length conversions conversion tool provides accurate results for all your measurement needs.

Quick Reference

1 Gigameter = 1000.00 Megameter

1 Megameter = 1.000e-3 Gigameter

Gigameter to Megameter Conversion Formula

To convert Gigameter to Megameter, multiply by 1000.00.

Megameter = Gigameter × 1000.00

Gigameter = Megameter × 1.000e-3

To convert Megameter back to Gigameter, divide by 1000.00 (or multiply by 1.000e-3).

About These Units

About Gigameter

The gigametre (or gigameter), symbol: Gm, is an SI metric unit of length. 1 gigametre equals 1e+9 metres, or 1 million kilometres, a large distance.

About Megameter

A megametre (American spelling: megameter, symbol Mm) is a unit of length in the metric system, equal to one million metres, the SI base unit of length, hence to 1,000 km or approximately 621.37 miles. Megametres (from the Greek words megas = big and metro = count/measure) are rarely seen in practical use, because they are too big for most terrestrial tasks. Their symbol (Mm) can also be confused with millimetres (mm). Still there are a number of "megametre fans". Megametres are also occasionally found in science fiction.

Gigameter to Megameter Conversion Table

Gigameter	Megameter	Megameter	Gigameter
0.1	100.0000	0.1	1.000e-4
0.5	500.0000	0.5	5.000e-4
1	1000.00	1	1.000e-3
2	2000.00	2	2.000e-3
5	5000.00	5	5.000e-3
10	10000.00	10	0.010000
20	20000.00	20	0.020000
25	25000.00	25	0.025000
50	50000.00	50	0.050000
100	100000.00	100	0.100000
250	250000.00	250	0.250000
500	500000.00	500	0.500000
1000	1000000.00	1000	1.0000

Why Use Our Gigameter to Megameter Converter?

Instant and accurate metric length conversions conversions
Free to use with no registration required
Mobile-friendly design for conversions on the go
Supports all major metric length conversions units