Megameter is 1000000 meter units.
Megameters to Terameters Converter — Mm to Tm
Convert Megameter (Mm) to Terameter (Tm) using the exact conversion factor (1 megameter = 0.000001 terameter). See the formula, worked examples, and conversion table.
Megameters 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+6 / 1e+12.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Megameters to Terameters
Megameter and Terameter both measure length. Specifically: Megameter is 1000000 meter units, and terameter is 1000000000000 meter units.
Formula
terameters = megameters × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 megameter equals 1000000 base units, and 1 terameter equals 1e+12 base units, so dividing one by the other gives the direct megameter-to-terameter factor of 0.000001.
Simple example
1 Mm × 0.000001 = 0.000001 Tm
1 megameter = 0.000001 terameters.
Real-world example
10 Mm × 0.000001 = 0.00001 Tm
10 megameters = 0.00001 terameters.
Conversion table
| Megameter (Mm) | Terameter (Tm) |
|---|---|
| 1 Mm | 0.000001 Tm |
| 5 Mm | 0.000005 Tm |
| 10 Mm | 0.00001 Tm |
| 21.0975 Mm | 0.0000210975 Tm |
| 42.195 Mm | 0.000042195 Tm |
| 100 Mm | 0.0001 Tm |
Reverse conversion: Terameter to Megameter
0.000001 Tm × 1000000 = 1 Mm
0.000001 terameters = 1 megameter.
megameters = terameters × 1000000
For a page dedicated to this direction, see Terameter to Megameter.
Understanding the Megameter (Mm)
Megameter is 1000000 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 megameter?
1 megameter equals 0.000001 terameters, using the exact defined conversion factor rather than an estimate.
How do I convert megameter to terameter?
Multiply the megameter value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert terameter back to megameter?
Use the reverse factor: 1 terameter equals 1,000,000 megameters. You can also use the swap control in the converter above to flip the direction instantly.
What is a megameter?
Megameter (Mm) is a unit of length.
What is a terameter?
Terameter (Tm) is a unit of length.
Is the megameter to terameter conversion exact?
Yes. Both megameter and terameter are defined by fixed standards rather than physical artifacts, so the factor of 0.000001 used above is exact to as many digits as you choose to display.