▸ processconvert
Length and Area

chtonmi

Convert chains (ch) to nautical miles (nmi).

Factor1 ch = 0.0108622 nmi

Converter

ch

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1.08622nmi

Rendered to 6 significant figures.

Formula

Formula
nmi = ch × 0.0108622

Multiply any value in chains by 0.0108622 to obtain the value in nautical miles.

Worked example

Convert 100 ch to nmi.

  1. 01Start with 100 ch.
  2. 02Multiply by the conversion factor: 100 × 0.0108622 = 1.08622 nmi.
Result100 ch = 1.08622 nmi

Conversion table

chnmi
10.010862
20.021724
50.054311
100.10862
200.21724
500.54311
1001.0862
2002.1724
5005.4311
100010.862

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from ch to nmi?
1 ch equals 0.0108622 nmi. To convert, multiply the value in chains by 0.0108622.
How do I convert 1 ch to nmi?
1 ch = 0.0108622 nmi. For any value, multiply by 0.0108622.
How do I convert nmi back to ch?
Divide by the same factor — or equivalently, multiply by 92.06236. So 1 nmi = 92.0624 ch.
When would I need to convert chain (Gunter's chain) to nautical mile?
Length conversions appear in piping, layout, and mechanical drawings — particularly when reconciling imperial fittings or instrument lengths with metric plant drawings.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

Related conversions