Convert length and distance units — meters, feet, inches, kilometers, miles, light years and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 chain | 20.1168 mm | |
| 0.01 chain | 201.168 mm | |
| 0.1 chain | 2011.68 mm | |
| 1 chain | 20116.8 mm | |
| 5 chain | 100584 mm | |
| 10 chain | 201168 mm | |
| 50 chain | 1.00584e+06 mm | |
| 100 chain | 2.01168e+06 mm | |
| 1000 chain | 2.01168e+07 mm |
Multiply the number of Chains by 20116.8 to get Millimeters. Formula: mm = chain × 20116.8. Example: 10 chain × 20116.8 = 201168 mm. To reverse, divide Millimeters by 20116.8 to get Chains.
| Chain (chain) | Millimeter (mm) |
|---|---|
| 0.001 chain | 20.1168 mm |
| 0.01 chain | 201.168 mm |
| 0.1 chain | 2011.68 mm |
| 0.5 chain | 10058.4 mm |
| 1 chain | 20116.8 mm |
| 2 chain | 40233.6 mm |
| 5 chain | 100584 mm |
| 10 chain | 201168 mm |
| 20 chain | 402336 mm |
| 50 chain | 1005840 mm |
| 100 chain | 2011680 mm |
| 250 chain | 5029200 mm |
| 500 chain | 10058400 mm |
| 1000 chain | 20116800 mm |
| 10000 chain | 201168000 mm |
To convert Chain to Millimeter, multiply by 20116.8. Example: 10 chain = 201168 mm
To convert Millimeter back to Chain, divide by 20116.8 (multiply by 4.97097e-05). Use the swap button above.
Start with 100 Chains = 2011680 mm as your reference point. Scale up or down from there.
Civil and structural engineers working on sites described in chains convert boundary distances to millimeters when producing detailed construction drawings where all structural dimensions use millimeters per engineering standards.
Surveyors setting out precise boundary markers for legal purposes convert chain measurements to millimeters for the tolerance specifications required by modern electronic total station and GNSS survey equipment.
Engineers assessing Victorian-era bridges, tunnels, and earthworks — originally surveyed in chains — convert measurements to millimeters when producing condition survey reports using modern structural engineering standards.
Architects specifying materials for buildings on chain-surveyed plots convert plot boundary dimensions to millimeters for coordination with material supply catalogues and manufacturing tolerances specified in millimeters.
GIS specialists digitising historic cadastral maps convert chain-based parcel dimensions to millimeters for sub-pixel accuracy when georeferencing scanned historical maps to modern coordinate reference systems.
Engineering students learn chain-to-millimeter conversion when studying how historic land survey systems interface with modern precision engineering — 1 chain = 20,116.8 mm illustrates the scale jump between land and engineering measurement.
The Chain is a unit of Length measurement (symbol: chain). 1 chain = 20116.8 mm. Used in scientific and practical Length measurement applications.
The Millimeter is a unit of Length measurement (symbol: mm). It is part of an internationally recognised measurement system used alongside the Chain.
Edmund Gunter invented the surveyor's chain in 1620. His design — 100 links totalling exactly 66 feet — was brilliantly chosen: 10 chains × 10 chains = 1 acre, making area calculation trivially simple in the field. 80 chains = 1 mile, 10 chains = 1 furlong. The chain became standard across the British Empire and is written into American law — the US Public Land Survey System still divides land using chains and links.
The millimetre was introduced alongside the metre in 1795 as part of the French metric system — one-thousandth of a metre, one-tenth of a centimetre. Its practical value emerged in precision engineering during the Industrial Revolution, when manufacturing tolerances first needed to be specified to sub-centimetre precision. By the 20th century, ISO engineering drawing standards adopted millimetres as the primary unit for all technical drawings worldwide. Today millimetres are the universal language of engineering — from watch mechanisms to aircraft fuselages.
Common use: Chain to Millimeter conversion is needed when working with international standards, scientific publications, or reference materials that use different unit systems for Length measurement.