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Length and Area

chtomil

Convert chains (ch) to mils (mil).

Factor1 ch = 792000 mil

Converter

ch

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

Result
792000mil

Rendered to 6 significant figures.

Formula

Formula
mil = ch × 792000

Multiply any value in chains by 792000 to obtain the value in mils.

Worked example

Convert 1 ch to mil.

  1. 01Start with 1 ch.
  2. 02Multiply by the conversion factor: 1 × 792000 = 792000 mil.
Result1 ch = 792000 mil

Conversion table

chmil
17.9200e+5
21.5840e+6
53.9600e+6
107.9200e+6
201.584e+7
503.96e+7
1007.92e+7
2001.584e+8
5003.96e+8
10007.92e+8

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from ch to mil?
1 ch equals 792000 mil. To convert, multiply the value in chains by 792000.
How do I convert 1 ch to mil?
1 ch = 792000 mil. For any value, multiply by 792000.
How do I convert mil back to ch?
Divide by the same factor — or equivalently, multiply by 1.262626e-6. So 1 mil = 1.26263e-6 ch.
When would I need to convert chain (Gunter's chain) to mil (thousandth of an inch)?
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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