Convert Yard to Chain
Convert yards to chains instantly. 1 yard = 0.0454545455 chain — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Chain to Yard converter for the reverse conversion.
Units explained
Yard
A yard is an Imperial and US customary unit of length equal to 3 feet or exactly 0.9144 meters. It is used for medium distances, particularly in athletics and fabric/textile measurement.
The yard's origin is contested but traditionally attributed to the length from the tip of King Henry I's nose to the end of his outstretched thumb. It was standardized in English law from the medieval period and definitively fixed at 0.9144 m exactly by the 1959 International Yard and Pound Agreement.
Yards are used in American football (10 yards for a first down), golf course distances, fabric and carpet sales in the US, and short-distance running events. The UK uses yards informally and on road signs for short distances.
Standardized in English law from the Middle Ages; fixed at 0.9144 m exactly by the 1959 International Yard and Pound Agreement.
Chain
A chain is an Imperial unit of length equal to 66 feet (20.1168 m), or exactly 4 rods or 100 links. It is the central unit in the Gunter chain-based land-survey system.
Defined by Edmund Gunter in 1620 specifically to make land-area arithmetic easy: 10 square chains = 1 acre exactly. The 66-foot length and 100-link subdivision were chosen so chain measurements could be added decimally.
Chains are the fundamental unit of legacy US public land surveys (the entire US township-and-range system uses chains). Modern survey work generally uses meters or feet, but legacy deeds remain in chains.
Invented by Edmund Gunter in 1620; standardised throughout English and American land survey; became exact via the 1959 International Yard and Pound Agreement.
Yard to Chain conversion formula
The relationship between yards and chains:
To convert yards to chains, multiply the value in yards by 0.0454545455. To reverse, multiply chains by 22.
How to use this converter
Type a value into the calculator. The result in chains updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Chain to Yard converter for the reverse direction.
Step-by-step: convert yards to chains
- Write down the value in yards (yd).
- Multiply that value by the factor 0.0454545455.
- The product is the equivalent value in chains (ch).
- To reverse, multiply the chain value by 22.
Worked examples
Example 1 — Convert 1 yd to ch:
1 × 0.0454545455 = 0.0454545455 ch
Example 2 — Convert 100 yd to ch:
100 × 0.0454545455 = 4.5454545455 ch
Real-world example — Maritime depth conversion
A 10-yard sounding depth converts cleanly into chains. Recreational divers and sailors translate between the two units whenever they read legacy charts against modern depth-sounder displays.
10 yd × 0.0454545455 = 0.4545454545 ch
Real-world example — Reference scenario in case of fallback
Conversion between human-scale length units is the everyday workflow of architecture, athletics, and apparel design — three of the most common contexts that span metric and imperial systems.
1 yd × 0.0454545455 = 0.0454545455 ch
Real-world example — Adult height conversion
A 1.8-yard-tall person measures a value in chains that converts the height to the unit favoured by American forms, schools, or driver's licences. This is daily routine for anyone living between metric and imperial systems.
1.8 yd × 0.0454545455 = 0.0818181818 ch
Yard to Chain conversion table
Standard reference values for converting yards to chains:
| Yard [yd] | Chain [ch] |
|---|---|
| 0.01 | 0.0004545455 |
| 0.1 | 0.0045454545 |
| 1 | 0.0454545455 |
| 2 | 0.0909090909 |
| 3 | 0.1363636364 |
| 4 | 0.1818181818 |
| 5 | 0.2272727273 |
| 10 | 0.4545454545 |
| 20 | 0.9090909091 |
| 30 | 1.3636363636 |
| 40 | 1.8181818182 |
| 50 | 2.2727272727 |
| 100 | 4.5454545455 |
| 500 | 22.7272727273 |
| 1000 | 45.4545454545 |
Frequently asked questions
How many chains is 1 yard?
How do I convert yards to chains?
How do I convert chains back to yards?
How many chains is 100 yards?
Popular length unit conversions
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Metric / SI (18 units)
Imperial / US Customary (26 units)
Nautical (1 units)
Astronomical (9 units)
Atomic / Physics (6 units)
Typographic (3 units)
Sources & references
Conversion factor (1 yd = 0.0454545455 ch) 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.