ch to mi
92 unitsConvert Chain (US survey) to Mile (ch to mi)
1 chain (US survey) = 0.012500025 miles. Convert chain (US survey) to miles instantly, with the exact factor, the formula and a reference table of common values.
ch to mi conversion table
| ch | mi |
|---|---|
| 1 ch | 0.012500025 mi |
| 2 ch | 0.02500005 mi |
| 3 ch | 0.037500075 mi |
| 5 ch | 0.062500125 mi |
| 10 ch | 0.12500025 mi |
| 20 ch | 0.2500005 mi |
| 50 ch | 0.62500125 mi |
| 100 ch | 1.2500025 mi |
| 250 ch | 3.12500625 mi |
| 500 ch | 6.2500125 mi |
| 1000 ch | 12.500025 mi |
What is a chain (US survey)?
The chain (US survey) is a US survey unit. One chain (US survey) equals 20.11684023 meters, so every conversion on this page starts from that single number. Survey units come from a slightly older definition of the foot that the United States kept for land measurement, so they are a tiny fraction larger than the modern versions.
The difference is far too small to notice in a room, but across miles of property boundary it matters, which is why surveyors and deed records keep the two apart.
In writing, the chain (US survey) is usually shortened to "ch". One chain (US survey) is 20.11684023 meters, and that ratio is what every figure on this page is built from.