Decameter is 10 meter units.
Decameters to Megameters Converter — dam to Mm
Convert Decameter (dam) to Megameter (Mm) using the exact conversion factor (1 decameter = 0.00001 megameter). See the formula, worked examples, and conversion table.
Decameters to Megameters 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.
Megameter is 1000000 meter units.
Result = input x 10 / 1e+6.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Decameters to Megameters
Decameter and Megameter both measure length. Specifically: Decameter is 10 meter units, and megameter is 1000000 meter units.
Formula
megameters = decameters × 0.00001
This factor comes from each unit's defined relationship to the category's base unit: 1 decameter equals 10 base units, and 1 megameter equals 1000000 base units, so dividing one by the other gives the direct decameter-to-megameter factor of 0.00001.
Simple example
1 dam × 0.00001 = 0.00001 Mm
1 decameter = 0.00001 megameters.
Real-world example
10 dam × 0.00001 = 0.0001 Mm
10 decameters = 0.0001 megameters.
Conversion table
| Decameter (dam) | Megameter (Mm) |
|---|---|
| 1 dam | 0.00001 Mm |
| 5 dam | 0.00005 Mm |
| 10 dam | 0.0001 Mm |
| 21.0975 dam | 0.000210975 Mm |
| 42.195 dam | 0.00042195 Mm |
| 100 dam | 0.001 Mm |
Reverse conversion: Megameter to Decameter
0.00001 Mm × 100000 = 1 dam
0.00001 megameters = 1 decameter.
decameters = megameters × 100000
For a page dedicated to this direction, see Megameter to Decameter.
Understanding the Decameter (dam)
Decameter is 10 meter units.
Understanding the Megameter (Mm)
Megameter is 1000000 meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many megameters are in 1 decameter?
1 decameter equals 0.00001 megameters, using the exact defined conversion factor rather than an estimate.
How do I convert decameter to megameter?
Multiply the decameter value by 0.00001. The converter above does this instantly to whatever precision you set.
How do I convert megameter back to decameter?
Use the reverse factor: 1 megameter equals 100,000 decameters. You can also use the swap control in the converter above to flip the direction instantly.
What is a decameter?
Decameter (dam) is a unit of length.
What is a megameter?
Megameter (Mm) is a unit of length.
Is the decameter to megameter conversion exact?
Yes. Both decameter and megameter are defined by fixed standards rather than physical artifacts, so the factor of 0.00001 used above is exact to as many digits as you choose to display.