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Length and Area

chtokm

Convert chains (ch) to kilometres (km).

Factor1 ch = 0.0201168 km

Converter

ch

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

Result
2.01168km

Rendered to 6 significant figures.

Formula

Formula
km = ch × 0.0201168

Multiply any value in chains by 0.0201168 to obtain the value in kilometres.

Worked example

Convert 100 ch to km.

  1. 01Start with 100 ch.
  2. 02Multiply by the conversion factor: 100 × 0.0201168 = 2.01168 km.
Result100 ch = 2.01168 km

Conversion table

chkm
10.020117
20.040234
50.10058
100.20117
200.40234
501.0058
1002.0117
2004.0234
50010.058
100020.117

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from ch to km?
1 ch equals 0.0201168 km. To convert, multiply the value in chains by 0.0201168.
How do I convert 1 ch to km?
1 ch = 0.0201168 km. For any value, multiply by 0.0201168.
How do I convert km back to ch?
Divide by the same factor — or equivalently, multiply by 49.7097. So 1 km = 49.7097 ch.
When would I need to convert chain (Gunter's chain) to kilometre?
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).

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