Convert Chain (ch) to Nautical Mile (UK) (NM (UK)) instantly.
Chain to Nautical Mile (UK) conversion
1 Chain (ch) = 0.010855263 Nautical Mile (UK) (NM (UK)). To convert Chain to Nautical Mile (UK), multiply the value by 0.010855263.
| Chain (ch) | Nautical Mile (UK) (NM (UK)) |
|---|---|
| 1 | 0.010855263 |
| 2 | 0.021710526 |
| 5 | 0.054276316 |
| 10 | 0.10855263 |
| 25 | 0.27138158 |
| 50 | 0.54276316 |
| 100 | 1.0855263 |
| 1000 | 10.855263 |
Frequently asked questions
How many Nautical Mile (UK) are in one Chain?
One Chain (ch) equals 0.010855263 Nautical Mile (UK) (NM (UK)).
How do I convert Chain to Nautical Mile (UK)?
To convert Chain to Nautical Mile (UK), multiply the value by 0.010855263.
What is 10 Chain in Nautical Mile (UK)?
10 Chain = 0.10855263 Nautical Mile (UK).
About these units
Chain (ch)
A chain is equal to 66 feet or 4 rods, and it was standardized by surveyor Edmund Gunter in the 17th century. "Gunter's chain," consisting of 100 metal links, became the backbone of land surveying in the English-speaking world for centuries. Its convenience stems from simple arithmetic: 10 square chains make an acre, making land area calculations straightforward. Railroads, farmland, and city parcels across the United States and the Commonwealth nations were once laid out using chains, so the unit appears in countless historical records. Even today, some legal property descriptions still reference chain-based measurements, making the unit relevant for modern surveyors who interpret old maps. Although high-precision digital equipment has replaced physical chains, the unit's structural role in land division ensures its lasting importance.
Nautical Mile (UK) (NM (UK))
The UK nautical mile was historically defined as 6,080 feet, slightly longer than the international nautical mile (1,852 meters). Before international standardization in 1929, British charts and maritime documents relied on this definition. It approximated one minute of latitude but used British feet rather than an exact metric conversion. Although the UK adopted the international nautical mile long ago, many older navigation charts, historical records, and maritime traditions still reference the UK version. Researchers dealing with archival naval documents must carefully distinguish between the two definitions to avoid errors in distance or speed calculations. The UK nautical mile is a reminder of the era before global standardization when each nation maintained its own measurement conventions—even for activities as universally critical as seafaring.