How to convert chains (US survey) to nautical miles
1 chain (us survey) is equal to 0.01086222475 nautical miles, and 1 nautical mile (international) is equal to 92.06217172 chains (US survey). To convert, multiply by the conversion factor:
nautical miles = chains (US survey) × 0.01086222475
nautical miles = chains (US survey) ÷ 92.06217172Example: convert 15 ch (US) to NM: 15 × 0.01086222475 = 0.1629333712 NM.
Chain (US Survey) to Nautical Mile (international) conversion table
| Chain (US Survey) (ch (US)) | Nautical Mile (international) (NM) |
|---|---|
| 0.01 ch (US) | 0.0001086222475 NM |
| 0.1 ch (US) | 0.001086222475 NM |
| 1 ch (US) | 0.01086222475 NM |
| 2 ch (US) | 0.0217244495 NM |
| 3 ch (US) | 0.03258667424 NM |
| 5 ch (US) | 0.05431112374 NM |
| 10 ch (US) | 0.1086222475 NM |
| 20 ch (US) | 0.217244495 NM |
| 50 ch (US) | 0.5431112374 NM |
| 100 ch (US) | 1.086222475 NM |
| 250 ch (US) | 2.715556187 NM |
| 500 ch (US) | 5.431112374 NM |
| 1,000 ch (US) | 10.86222475 NM |
About the chain (us survey)
The US survey chain is 66 US survey feet, about 20.11684 m, used in the US Public Land Survey System.
Symbol: ch (US) · 1 ch (US) = 20.11684023 m · Category: US survey units
About the nautical mile (international)
The international nautical mile is exactly 1,852 m, close to one minute of latitude. It's used in aviation, shipping and for territorial waters, and one knot is one nautical mile per hour.
Symbol: NM · 1 NM = 1,852 m · Category: Nautical