ch² to mm²
39 unitsResult4.046856e+8
404685642.2mm²
1 ch² × 404685642.2 = 404685642.2 mm²
Convert Square chain to Square millimeter (ch² to mm²)
1 square chain = 404685642.2 square millimeters. Convert square chains to square millimeters instantly, with the exact factor, the formula and a reference table of common values.
Formula
square millimeters = square chains × 404685642.2
ch² to mm² conversion table
| ch² | mm² |
|---|---|
| 1 ch² | 404685642.2 mm² |
| 2 ch² | 809371284.5 mm² |
| 3 ch² | 1214056927 mm² |
| 5 ch² | 2023428211 mm² |
| 10 ch² | 4046856422 mm² |
| 20 ch² | 8093712845 mm² |
| 50 ch² | 20234282110 mm² |
| 100 ch² | 40468564220 mm² |
| 250 ch² | 101171410600 mm² |
| 500 ch² | 202342821100 mm² |
| 1000 ch² | 404685642200 mm² |
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.