Length and Area
chtom
Convert chains (ch) to metres (m).
Factor1 ch = 20.1168 m
Converter
ch
Accepts numbers or expressions, e.g. 150 + 14.7
Result
m
Rendered to 6 significant figures.
Formula
Formula
m = ch × 20.1168
Multiply any value in chains by 20.1168 to obtain the value in metres.
Worked example
Convert 10 ch to m.
- 01Start with 10 ch.
- 02Multiply by the conversion factor: 10 × 20.1168 = 201.168 m.
Result10 ch = 201.168 m
Conversion table
| ch | m |
|---|---|
| 1 | 20.117 |
| 2 | 40.234 |
| 5 | 100.58 |
| 10 | 201.17 |
| 20 | 402.34 |
| 50 | 1005.8 |
| 100 | 2011.7 |
| 200 | 4023.4 |
| 500 | 10058 |
| 1000 | 20117 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from ch to m?
1 ch equals 20.1168 m. To convert, multiply the value in chains by 20.1168.
How do I convert 1 ch to m?
1 ch = 20.1168 m. For any value, multiply by 20.1168.
How do I convert m back to ch?
Divide by the same factor — or equivalently, multiply by 0.0497097. So 1 m = 0.0497097 ch.
When would I need to convert chain (Gunter's chain) to metre?
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).