Inch to Chain Converter
Length · unit-converter
Convert Inch to Chain with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use SI-based definitions (international yard, nautical mile, etc.).
Calculator
From: Inch (in)
To: Chain (chain)
About Inch
The inch is an imperial and US customary unit equal to exactly 0.0254 meters. Twelve inches equal one feet; it is used for screen sizes, tools, and fine measurements.
About Chain
The chain is a surveying unit equal to 66 feet (20.1168 meters) exactly. It appears in land measurement and legacy civil engineering records.
How to convert inches to chains
1 inch is equal to 0.00126262626263 chain:
1 in = (0.0254 m ÷ 20.1168 m) chain = 0.00126262626263 chain
Each inch is defined as 0.0254 m and each chain as 20.1168 m, so one in equals 0.0254 ÷ 20.1168 chain = 0.00126262626263 chain.
Let d(in) be the numeric value of the same length measured in Inch (in), and d(chain) the value in Chain (chain). Then:
d(chain) = d(in) × (0.0254 / 20.1168)
Equivalently, divide by how many in fit into one chain (meters per chain divided by meters per in):
d(chain) = d(in) ÷ 792.00000000000011
Or: chain = inch ÷ 792.00000000000011
Examples
Example #1: Convert 20 in to chain
20 in = 20 in × (0.0254/20.1168) chain = 0.0252525253 chain
20 in = 20 in ÷ 792.00000000000011 = 0.0252525253 chain
Example #2: Convert 50 in to chain
50 in = 50 in × (0.0254/20.1168) chain = 0.0631313131 chain
50 in = 50 in ÷ 792.00000000000011 = 0.0631313131 chain
Summary
To convert Inch to Chain, multiply the value in in by the ratio of meters per in divided by meters per chain. Equivalently: value_chain = value_in × (0.0254 / 20.1168). Numerically, 1 in equals 0.0012626262626262625 chain.
Relationship context
Both units belong to US customary / imperial length. Conversions often use simple ratios (for example inches and feet), while miles relate to yards and feet through fixed definitions. The numeric factor used here is traceable to the international inch (0.0254 m) and related definitions.
Conversion tables
| Inch (in) | Chain (chain) |
|---|---|
| 0.1 | 0.0001262626 |
| 1 | 0.0012626263 |
| 2 | 0.0025252525 |
| 3 | 0.0037878788 |
| 4 | 0.0050505051 |
| 5 | 0.0063131313 |
| 6 | 0.0075757576 |
| 7 | 0.0088383838 |
| 8 | 0.0101010101 |
| 9 | 0.0113636364 |
| Inch (in) | Chain (chain) |
|---|---|
| 10 | 0.0126262626 |
| 20 | 0.0252525253 |
| 30 | 0.0378787879 |
| 40 | 0.0505050505 |
| 50 | 0.0631313131 |
| 60 | 0.0757575758 |
| 70 | 0.0883838384 |
| 80 | 0.101010101 |
| 90 | 0.1136363636 |
| 100 | 0.1262626263 |