Millimetres to chains converter

Convert millimetres (mm) to chains (ch).

Length converter

Instant conversion

Edit either value. Decimals and scientific notation supported.

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Measurement format

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To value

Measurement format

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CONVERSION

1 mm ≈ 0.00004970969538 ch

Display precision

Precision changes displayed rounding, not calculation accuracy.

FORMULAch = mm ÷ 20116.8

FORMULA & EXAMPLES

How to convert Millimetres to chains

ch = mm ÷ 20116.8

Divide the mm reading by 20116.8.

Worked examples

25.4 mm ≈ 0.001262626263 ch

25.4 ÷ 20116.8 ≈ 0.001262626263

1000 mm ≈ 0.04970969538 ch

1000 ÷ 20116.8 ≈ 0.04970969538

Millimetres to chains table

Fixed reference · Millimetre to Chain

Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.

Millimetre (mm)	Chain (ch)
0	0
0.1	0.000004970969538
0.5	0.00002485484769
1	0.00004970969538
2	0.00009941939076
5	0.0002485484769
10	0.0004970969538
25	0.001242742384
50	0.002485484769
100	0.004970969538
1000	0.04970969538

Table results use 10 significant figures; decimal formula coefficients use up to 15. Calculations use the unit definitions before rounding. Extra digits do not improve measurement accuracy.

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