Kilometers to megameters converter
Convert kilometers (km) to megameters (Mm). Calculate any value, follow the unit-factor steps and check a conversion table.
Updated · How we checkUse a decimal point, such as 2.5. Enter a value in km; the result is in Mm.
Formula
Worked example
Convert 1 km to Mm:
1 km ≈ 0.001 Mm
Multiply your km value by the factor above. The calculator uses the full conversion factor before rounding the displayed answer.
Kilometers to megameters table
Reference values rounded to 10 significant digits. Use the converter above for other amounts.
| Kilometers (km) | Megameters (Mm) |
|---|---|
| 0.1 | ≈ 0.0001 |
| 0.5 | ≈ 0.0005 |
| 1 | ≈ 0.001 |
| 2 | ≈ 0.002 |
| 5 | ≈ 0.005 |
| 10 | ≈ 0.01 |
| 25 | ≈ 0.025 |
| 50 | ≈ 0.05 |
| 100 | ≈ 0.1 |
| 1000 | ≈ 1 |
What kilometers measure
Kilometers (km) represent length & distance. One unit equals 10^3 m. Length describes a distance. The meter is the SI base unit of length.
Reading the result in megameters
Megameters (Mm) represent length & distance. One unit equals 10^6 m. Length describes a distance. The meter is the SI base unit of length.
Where this conversion helps
Compare dimensions from drawings, laboratory instruments or distance measurements. Use square units for area and cubic units for volume; a length factor alone cannot convert either.
How the scale changes
The input unit has a factor of 1e3 m; the output unit has a factor of 1e6 m. Multiply the entered number by the input factor, then divide by the output factor. The physical quantity stays the same while its numerical representation changes.
Reading very small or large results
Scientific notation keeps very small and large values readable: 2.5e-6 means 0.0000025. The converter calculates with 50 significant digits internally and displays up to 10. Exact unit definitions do not remove uncertainty from the original measurement.
References
Definitions and method references. Example rates and prices on this page are editable assumptions.