ch² to mi²
39 unitsResult1.562500e-4
0.00015625mi²
1 ch² × 0.00015625 = 0.00015625 mi²
Convert Square chain to Square mile (ch² to mi²)
1 square chain = 0.00015625 square miles. Convert square chains to square miles instantly, with the exact factor, the formula and a reference table of common values.
Formula
square miles = square chains × 0.00015625
ch² to mi² conversion table
| ch² | mi² |
|---|---|
| 1 ch² | 0.00015625 mi² |
| 2 ch² | 0.0003125 mi² |
| 3 ch² | 0.00046875 mi² |
| 5 ch² | 0.00078125 mi² |
| 10 ch² | 0.0015625 mi² |
| 20 ch² | 0.003125 mi² |
| 50 ch² | 0.0078125 mi² |
| 100 ch² | 0.015625 mi² |
| 250 ch² | 0.0390625 mi² |
| 500 ch² | 0.078125 mi² |
| 1000 ch² | 0.15625 mi² |
What is a square chain?
A square chain is the area of a square one surveyor's chain — 66 feet — on each side: 404.68564224 square meters.
The chain was the surveyor's basic measuring tool, and its square fits neatly into the old land system: ten square chains make exactly one acre.
In writing, the square chain is usually shortened to "ch²". One square chain is 404.6856422 square meters, and that ratio is what every number on this page is built from.