Convert square chain to square millimeter
Please provide values below to convert square chain [ch^2] to square millimeter [mm^2], or Convert square millimeter to square chain.
How to Convert Square Chain to Square Millimeter
1 ch^2 = 404685642.24 mm^2
Example: convert 15 ch^2 to mm^2:
15 ch^2 = 15 × 404685642.24 mm^2 = 6070284633.6 mm^2
Square Chain to Square Millimeter Conversion Table
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Square Chain
A square chain (ch^2) is a unit of area equal to the area of a square with sides measuring one chain (66 feet) each, equivalent to 4356 square feet.
History/Origin
The square chain originated in land measurement practices in England, particularly used in surveying and land division during the 19th century, especially in the context of the Imperial system.
Current Use
Today, the square chain is largely obsolete and rarely used outside historical or land survey contexts; modern measurements typically employ acres or square meters.
Square Millimeter
A square millimeter (mm²) is a unit of area equal to the area of a square with sides measuring one millimeter.
History/Origin
The square millimeter has been used in scientific and engineering contexts for precise measurement of small areas, especially in fields like electronics and material science, as a subdivision of the metric system established in the 19th century.
Current Use
It is commonly used today in fields such as electronics, manufacturing, and scientific research to measure small surface areas, including the cross-sectional areas of wires and components.