Hectometer is 100 meter units.
Hectometers to Megameters Converter — hm to Mm
Convert Hectometer (hm) to Megameter (Mm) using the exact conversion factor (1 hectometer = 0.0001 megameter). See the formula, worked examples, and conversion table.
Hectometers 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 100 / 1e+6.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectometers to Megameters
Hectometer and Megameter both measure length. Specifically: Hectometer is 100 meter units, and megameter is 1000000 meter units.
Formula
megameters = hectometers × 0.0001
This factor comes from each unit's defined relationship to the category's base unit: 1 hectometer equals 100 base units, and 1 megameter equals 1000000 base units, so dividing one by the other gives the direct hectometer-to-megameter factor of 0.0001.
Simple example
1 hm × 0.0001 = 0.0001 Mm
1 hectometer = 0.0001 megameters.
Real-world example
10 hm × 0.0001 = 0.001 Mm
10 hectometers = 0.001 megameters.
Conversion table
| Hectometer (hm) | Megameter (Mm) |
|---|---|
| 1 hm | 0.0001 Mm |
| 5 hm | 0.0005 Mm |
| 10 hm | 0.001 Mm |
| 21.0975 hm | 0.00210975 Mm |
| 42.195 hm | 0.0042195 Mm |
| 100 hm | 0.01 Mm |
Reverse conversion: Megameter to Hectometer
0.0001 Mm × 10000 = 1 hm
0.0001 megameters = 1 hectometer.
hectometers = megameters × 10000
For a page dedicated to this direction, see Megameter to Hectometer.
Understanding the Hectometer (hm)
Hectometer is 100 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 hectometer?
1 hectometer equals 0.0001 megameters, using the exact defined conversion factor rather than an estimate.
How do I convert hectometer to megameter?
Multiply the hectometer value by 0.0001. The converter above does this instantly to whatever precision you set.
How do I convert megameter back to hectometer?
Use the reverse factor: 1 megameter equals 10,000 hectometers. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectometer?
Hectometer (hm) is a unit of length.
What is a megameter?
Megameter (Mm) is a unit of length.
Is the hectometer to megameter conversion exact?
Yes. Both hectometer and megameter are defined by fixed standards rather than physical artifacts, so the factor of 0.0001 used above is exact to as many digits as you choose to display.