ConvertNavi

Chain to Millimeter (ch → mm)

Convert chain to millimeter instantly. The conversion factor below is exact by international definition.

Realtime·length·imperial
Exact
ch
× 20,116.8
mm
20,116.8
Precision [auto]
6

📐ch to mm formulaExact

mm = ch × 20116.799999999999
Inverse: ch = mm × 4.970970e-5

Worked example: 1 ch = 20116.799999999999 mm

ℹ️About these units

Chain (ch)
Millimeter (mm)

📊Reference table: ch → mm

Chain (ch)Millimeter (mm)
120,116.8
240,233.6
5100,584
10201,168
15301,752
20402,336
25502,920
501,005,840
1002,011,680
2505,029,200
50010,058,400
75015,087,600
1,00020,116,800

Want a downloadable CSV? Append ?format=csv to the API /api/v1/table endpoint.

🔁Reverse & related

Reverse: mm → chch → mch → kmch → dmch → cmch → μmch → nmch → inch → ft

🔌API & widget

GET https://convertnavi.com/api/v1/convert?value=10&from=chain&to=millimeter
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