Convert Link to Millimeter
Convert links to millimeters instantly. 1 link = 201.168 millimeter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Millimeter to Link converter for the reverse conversion.
Units explained
Link
A link is an Imperial unit of length equal to 7.92 inches (201.168 mm) — exactly 1/100 of a surveyor's chain. It is the smallest unit in the chain-based survey measurement system.
The link was defined by Edmund Gunter in 1620 as part of his 22-yard surveying chain. He divided the chain into 100 links specifically to enable easy decimal arithmetic when computing parcel areas.
Links appear in historical US and UK land survey documents (especially pre-1900). Modern surveyors generally use feet or meters but legacy deed records and government land surveys still cite acreage in chains and links.
Defined by Edmund Gunter in 1620; standardised as 7.92 inches via the chain definition; became exact via the 1959 International Yard and Pound Agreement.
Millimeter
A millimeter is a metric unit of length equal to one thousandth of a meter (1/1000 m). It is the standard small-scale unit in the SI system and is widely used wherever sub-centimeter precision matters.
The millimeter was defined alongside the meter when France adopted the metric system in 1795, using the standard SI prefix milli- (from Latin mille, "thousand") to denote one-thousandth.
Millimeters are used in engineering drawings, machining, manufacturing, paper sizes, rainfall measurement, and any context where dimensions below one centimeter need to be specified clearly. Most rulers worldwide are marked in millimeters.
Adopted in 1795 in France as part of the original metric system; standardized internationally by the Metre Convention in 1875 and confirmed in the SI in 1960.
Link to Millimeter conversion formula
The relationship between links and millimeters:
To convert links to millimeters, multiply the value in links by 201.168. To reverse, multiply millimeters by 0.0049709695.
How to use this converter
Type a value into the calculator. The result in millimeters updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Millimeter to Link converter for the reverse direction.
Step-by-step: convert links to millimeters
- Write down the value in links (lk).
- Multiply that value by the factor 201.168.
- The product is the equivalent value in millimeters (mm).
- To reverse, multiply the millimeter value by 0.0049709695.
Worked examples
Example 1 — Convert 1 lk to mm:
1 × 201.168 = 201.168 mm
Example 2 — Convert 100 lk to mm:
100 × 201.168 = 20116.8 mm
Real-world example — Body height conversion (reverse direction)
You measure 1.75 links tall and need to fill in a gym membership form or medical record that asks for height in millimeters. This is the most-used everyday length conversion in metric-using countries.
1.75 lk × 201.168 = 352.044 mm
Real-world example — Pet and accessory dimensions
A 3-link dog leash equals a tidy round value in millimeters. Pet-supply shopping frequently mixes the two units across product specifications.
3 lk × 201.168 = 603.504 mm
Real-world example — Fabric and tailoring
One link of fabric converts to a value in millimeters commonly used for seam allowances. Garment patterns frequently switch between the two units on a single instruction sheet.
1 lk × 201.168 = 201.168 mm
Link to Millimeter conversion table
Standard reference values for converting links to millimeters:
| Link [lk] | Millimeter [mm] |
|---|---|
| 0.01 | 2.01168 |
| 0.1 | 20.1168 |
| 1 | 201.168 |
| 2 | 402.336 |
| 3 | 603.504 |
| 4 | 804.672 |
| 5 | 1005.84 |
| 10 | 2011.68 |
| 20 | 4023.36 |
| 30 | 6035.04 |
| 40 | 8046.72 |
| 50 | 10058.4 |
| 100 | 20116.8 |
| 500 | 100584 |
| 1000 | 201168 |
Frequently asked questions
How many millimeters is 1 link?
How do I convert links to millimeters?
How do I convert millimeters back to links?
How many millimeters is 100 links?
Popular length unit conversions
Convert Link to other length units
Show all Link conversions
Metric / SI (4 units)
Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 lk = 201.168 mm) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.