Convert length and distance units — meters, feet, inches, kilometers, miles, light years and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 mm | 4.97097e-08 chain | |
| 0.01 mm | 4.97097e-07 chain | |
| 0.1 mm | 4.97097e-06 chain | |
| 1 mm | 4.97097e-05 chain | |
| 5 mm | 0.000248548 chain | |
| 10 mm | 0.000497097 chain | |
| 50 mm | 0.00248548 chain | |
| 100 mm | 0.00497097 chain | |
| 1000 mm | 0.0497097 chain |
Multiply the number of Millimeters by 4.97097e-05 to get Chains. Formula: chain = mm × 4.97097e-05. Example: 10 mm × 4.97097e-05 = 0.000497097 chain. To reverse, divide Chains by 4.97097e-05 to get Millimeters.
| Millimeter (mm) | Chain (chain) |
|---|---|
| 0.001 mm | 4.971×10-8 chain |
| 0.01 mm | 4.97097e-07 chain |
| 0.1 mm | 4.97097e-06 chain |
| 0.5 mm | 2.48548e-05 chain |
| 1 mm | 4.97097e-05 chain |
| 2 mm | 9.94194e-05 chain |
| 5 mm | 0.000248548 chain |
| 10 mm | 0.000497097 chain |
| 20 mm | 0.000994194 chain |
| 50 mm | 0.00248548 chain |
| 100 mm | 0.00497097 chain |
| 250 mm | 0.0124274 chain |
| 500 mm | 0.0248548 chain |
| 1000 mm | 0.0497097 chain |
| 10000 mm | 0.497097 chain |
To convert Millimeter to Chain, multiply by 4.97097e-05. Example: 10 mm = 0.000497097 chain
To convert Chain back to Millimeter, divide by 4.97097e-05 (multiply by 20116.8). Use the swap button above.
Start with 100 Millimeters = 0.00497097 chain as your reference point. Scale up or down from there.
Surveyors setting property boundary markers to millimetre GPS precision convert to chains for recording in official land registers where chain-based boundary descriptions are legally required in Commonwealth countries.
Civil engineers designing buildings and infrastructure on sites described in chains in title deeds convert mm-precision construction dimensions to chains when verifying compliance with historic boundary records.
Architects converting chain-based historic property descriptions to modern metric construction drawings convert between chains and millimetres — the building is designed in mm while the site boundary uses chains in legal documents.
Farms converting from chain-based to metric coordinate systems in GIS databases use mm-level GPS accuracy for the new measurements while translating results back to chains for legacy legal documentation.
1 chain = 20,116.8 mm. Engineering and surveying students learn this conversion to understand how imperial land measurement units relate to modern precision engineering standards.
British railway infrastructure uses chains for track distance records while engineering drawings use millimetres. Converting between mm dimensions and chain positions is routine in UK rail maintenance and construction.
The Millimeter is a unit of Length measurement (symbol: mm). 1 mm = 4.97097e-05 chain. Used in scientific and practical Length measurement applications.
The Chain is a unit of Length measurement (symbol: chain). It is part of an internationally recognised measurement system used alongside the Millimeter.
The millimetre was introduced alongside the metre in 1795 as part of the French metric system — one-thousandth of a metre, from the Latin 'mille' (thousand). Its practical importance emerged during the Industrial Revolution, when manufacturing tolerances first needed sub-centimetre precision. By the 20th century, ISO engineering drawing standards adopted millimetres as the primary dimension unit for all technical drawings worldwide. Today millimetres are the universal language of engineering — from the finest watch gear to the largest aircraft fuselage — and are the most widely used length unit in global manufacturing.
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. 80 chains = 1 mile, 10 chains = 1 furlong. The chain became the standard survey unit across the British Empire and is written into American law — the US Public Land Survey System still divides land using chains and links.
Common use: Millimeter to Chain conversion is needed when working with international standards, scientific publications, or reference materials that use different unit systems for Length measurement.