Gigameter is 1000000000 meter units.
Gigameters to Terameters Converter — Gm to Tm
Convert Gigameter (Gm) to Terameter (Tm) using the exact conversion factor (1 gigameter = 0.001 terameter). See the formula, worked examples, and conversion table.
Gigameters to Terameters 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.
Terameter is 1000000000000 meter units.
Result = input x 1e+9 / 1e+12.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gigameters to Terameters
Gigameter and Terameter both measure length. Specifically: Gigameter is 1000000000 meter units, and terameter is 1000000000000 meter units.
Formula
terameters = gigameters × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 gigameter equals 1000000000 base units, and 1 terameter equals 1e+12 base units, so dividing one by the other gives the direct gigameter-to-terameter factor of 0.001.
Simple example
1 Gm × 0.001 = 0.001 Tm
1 gigameter = 0.001 terameters.
Real-world example
10 Gm × 0.001 = 0.01 Tm
10 gigameters = 0.01 terameters.
Conversion table
| Gigameter (Gm) | Terameter (Tm) |
|---|---|
| 1 Gm | 0.001 Tm |
| 5 Gm | 0.005 Tm |
| 10 Gm | 0.01 Tm |
| 21.0975 Gm | 0.0210975 Tm |
| 42.195 Gm | 0.042195 Tm |
| 100 Gm | 0.1 Tm |
Reverse conversion: Terameter to Gigameter
0.001 Tm × 1000 = 1 Gm
0.001 terameters = 1 gigameter.
gigameters = terameters × 1000
For a page dedicated to this direction, see Terameter to Gigameter.
Understanding the Gigameter (Gm)
Gigameter is 1000000000 meter units.
Understanding the Terameter (Tm)
Terameter is 1000000000000 meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many terameters are in 1 gigameter?
1 gigameter equals 0.001 terameters, using the exact defined conversion factor rather than an estimate.
How do I convert gigameter to terameter?
Multiply the gigameter value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert terameter back to gigameter?
Use the reverse factor: 1 terameter equals 1,000 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 terameter?
Terameter (Tm) is a unit of length.
Is the gigameter to terameter conversion exact?
Yes. Both gigameter and terameter are defined by fixed standards rather than physical artifacts, so the factor of 0.001 used above is exact to as many digits as you choose to display.