Convert Square Nanometer (nm²) to Square Chain (ch²) instantly.
About these units
Square Nanometer (nm²)
A square nanometer represents 10⁻¹⁸ square meters and lies firmly within the realm of molecular and atomic structures. Protein surfaces, nanoparticle coatings, molecular binding sites, and atomic lattices are often described in nm². Researchers studying catalysts, DNA interactions, or graphene sheets depend on such units to express extremely small but functionally significant surface areas. Because nm² expresses areas where chemical reactivity is determined by single molecules or atomic clusters, it is fundamental in nanotechnology, materials engineering, and molecular chemistry.
Square Chain (ch²)
A square chain equals the area of a square one chain (~66 feet) per side, resulting in 4,356 square feet, or exactly 1/10 of an acre. This unit is closely linked to the chain, a surveyor's unit standardized by Edmund Gunter in the 17th century. Because 10 square chains make an acre, survey calculations for early colonial and American lands were extremely efficient. Square chains allowed surveyors to map and divide land rapidly using ropes or metal chains, producing a legacy seen in long, straight property lines still visible today across rural landscapes.