The Kilometer (km) is used for longer distances like city-to-city travel (e.g., 50 km), marathon races (42.195 km), or highway spans (e.g., 100 km). It's also used in aviation and sports like cycling. 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 Kilometer (km) and Chain (ch), use the following formulas:
1 Kilometer (km) = 49.709695378986716 Chain (ch)
1 Chain (ch) = 0.0201168 Kilometer (km)
0.5 km = 0.5 * 49.709695378986716 ch = 24.854847689493358 ch
3 km = 3 * 49.709695378986716 ch = 149.12908613696015 ch
7 km = 7 * 49.709695378986716 ch = 347.967867652907 ch
45 km = 45 * 49.709695378986716 ch = 2236.936292054402 ch
89 km = 89 * 49.709695378986716 ch = 4424.1628887298175 ch
| Kilometer (km) | Chain (ch) |
|---|---|
| 0.1 km | 4.970969537898672 ch |
| 1 km | 49.709695378986716 ch |
| 2 km | 99.41939075797343 ch |
| 5 km | 248.54847689493357 ch |
| 10 km | 497.09695378986714 ch |
| 50 km | 2485.484768949336 ch |
| 70 km | 3479.67867652907 ch |
| 200 km | 9941.939075797343 ch |
| 250 km | 12427.42384474668 ch |