Astronomical scale (Moon's orbit = ~0.38 Gm). Useful for space agency data but rarely searched by the public. 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 Gigameter (Gm) and Chain (ch), use the following formulas:
1 Gigameter (Gm) = 49709695.378986716 Chain (ch)
1 Chain (ch) = 2.01168e-8 Gigameter (Gm)
0.15 Gm = 0.15 * 49709695.378986716 ch = 7456454.306848007 ch
1.5 Gm = 1.5 * 49709695.378986716 ch = 74564543.06848007 ch
4 Gm = 4 * 49709695.378986716 ch = 198838781.51594687 ch
| Gigameter (Gm) | Chain (ch) |
|---|---|
| 0.1 Gm | 4970969.537898672 ch |
| 1 Gm | 49709695.378986716 ch |
| 10 Gm | 497096953.78986716 ch |
| 100 Gm | 4970969537.898672 ch |