Convert Chain to Inch
Convert chains to inches instantly. 1 chain = 792 inch — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Inch to Chain converter for the reverse conversion.
Units explained
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.
Inch
An inch is an Imperial and US customary unit of length defined since 1959 as exactly 25.4 millimeters (0.0254 meters). It is still the standard small unit of length in the United States, the United Kingdom (informally), and a few other countries.
The inch derives from the Roman uncia (one-twelfth of a foot) and survived through Anglo-Saxon and medieval English measurement systems. Various definitions persisted regionally until the 1959 International Yard and Pound Agreement standardized the inch globally as exactly 25.4 mm.
Inches are used in the US and UK for body height, screen sizes (TVs, monitors, phones), tire sizes, plumbing, lumber, paper sizes (US Letter is 8.5 × 11 in), and most consumer product specifications in the United States.
Anglo-Saxon origin (predating 1066); standardized to 25.4 mm exactly by the International Yard and Pound Agreement of 1959, signed by the US, UK, Canada, Australia, New Zealand, and South Africa.
Chain to Inch conversion formula
The relationship between chains and inches:
To convert chains to inches, multiply the value in chains by 792. To reverse, multiply inches by 0.0012626263.
How to use this converter
Type a value into the calculator. The result in inches updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Inch to Chain converter for the reverse direction.
Step-by-step: convert chains to inches
- Write down the value in chains (ch).
- Multiply that value by the factor 792.
- The product is the equivalent value in inches (in).
- To reverse, multiply the inch value by 0.0012626263.
Worked examples
Example 1 — Convert 1 ch to in:
1 × 792 = 792 in
Example 2 — Convert 100 ch to in:
100 × 792 = 79200 in
Chain to Inch conversion table
Standard reference values for converting chains to inches:
| Chain [ch] | Inch [in] |
|---|---|
| 0.01 | 7.92 |
| 0.1 | 79.2 |
| 1 | 792 |
| 2 | 1584 |
| 3 | 2376 |
| 4 | 3168 |
| 5 | 3960 |
| 10 | 7920 |
| 20 | 15840 |
| 30 | 23760 |
| 40 | 31680 |
| 50 | 39600 |
| 100 | 79200 |
| 500 | 396000.0000000001 |
| 1000 | 792000.0000000001 |
Frequently asked questions
How many inches is 1 chain?
How do I convert chains to inches?
How do I convert inches back to chains?
How many inches is 100 chains?
Popular length unit conversions
Convert Chain to other length units
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Metric / SI (4 units)
Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 ch = 792 in) 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.