Used in planetary science (Earth's diameter = ~12.7 Mm). Also for long-distance fiber optics or satellite measurements. The Chain (Gunter's chain) was fundamental in surveying the American frontier. Measuring 66 feet (4 rods), it's the length of a cricket pitch. Ten square chains make an acre. Modern surveyors still reference chains in legal descriptions, and the unit remains visible in rural road layouts across the US.
To convert between Megameter (Mm) and Chain (ch), use the following formulas:
1 Megameter (Mm) = 49709.69537898671 Chain (ch)
1 Chain (ch) = 0.0000201168 Megameter (Mm)
1 Mm = 1 * 49709.69537898671 ch = 49709.69537898671 ch
2.4 Mm = 2.4 * 49709.69537898671 ch = 119303.2689095681 ch
5 Mm = 5 * 49709.69537898671 ch = 248548.47689493356 ch
10 Mm = 10 * 49709.69537898671 ch = 497096.9537898671 ch
| Megameter (Mm) | Chain (ch) |
|---|---|
| 1 Mm | 49709.69537898671 ch |
| 5 Mm | 248548.47689493356 ch |
| 10 Mm | 497096.9537898671 ch |
| 50 Mm | 2485484.7689493354 ch |
| 100 Mm | 4970969.537898671 ch |