Gigameter is 1000000000 meter units.
Gigameters to Exameters Converter — Gm to Em
Convert Gigameter (Gm) to Exameter (Em) using the exact conversion factor (1 gigameter = 1e-9 exameter). See the formula, worked examples, and conversion table.
Gigameters to Exameters converter
Converter
Length Converter
Convert SI, imperial, US customary, astronomical, scientific, and historical length units.
Context values
Some unit families need one extra value for a physically accurate result.
Exameter is 1000000000000000000 meter units.
Result = input x 1e+9 / 1e+18.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gigameters to Exameters
Gigameter and Exameter both measure length. Specifically: Gigameter is 1000000000 meter units, and exameter is 1000000000000000000 meter units.
Formula
exameters = gigameters × 1e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 gigameter equals 1000000000 base units, and 1 exameter equals 1e+18 base units, so dividing one by the other gives the direct gigameter-to-exameter factor of 1e-9.
Simple example
1 Gm × 1e-9 = 1e-9 Em
1 gigameter = 1e-9 exameters.
Real-world example
10 Gm × 1e-9 = 1e-8 Em
10 gigameters = 1e-8 exameters.
Conversion table
| Gigameter (Gm) | Exameter (Em) |
|---|---|
| 1 Gm | 1e-9 Em |
| 5 Gm | 5e-9 Em |
| 10 Gm | 1e-8 Em |
| 21.0975 Gm | 2.10975e-8 Em |
| 42.195 Gm | 4.2195e-8 Em |
| 100 Gm | 1e-7 Em |
Reverse conversion: Exameter to Gigameter
1e-9 Em × 1000000000 = 1 Gm
1e-9 exameters = 1 gigameters.
gigameters = exameters × 1000000000
For a page dedicated to this direction, see Exameter to Gigameter.
Understanding the Gigameter (Gm)
Gigameter is 1000000000 meter units.
Understanding the Exameter (Em)
Exameter is 1000000000000000000 meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many exameters are in 1 gigameter?
1 gigameter equals 1e-9 exameters, using the exact defined conversion factor rather than an estimate.
How do I convert gigameter to exameter?
Multiply the gigameter value by 1e-9. The converter above does this instantly to whatever precision you set.
How do I convert exameter back to gigameter?
Use the reverse factor: 1 exameter equals 1,000,000,000 gigameters. You can also use the swap control in the converter above to flip the direction instantly.
What is a gigameter?
Gigameter (Gm) is a unit of length.
What is a exameter?
Exameter (Em) is a unit of length.
Is the gigameter to exameter conversion exact?
Yes. Both gigameter and exameter are defined by fixed standards rather than physical artifacts, so the factor of 1e-9 used above is exact to as many digits as you choose to display.