A technical atmosphere (symbol: at) is a non-SI unit of pressure equal to one kilogram-force per square centimeter. {| |- |valign=top rowspan=2|1 at ||= 98.0665 kPa |- |≈ 9.678416.7840999999999957.84099999999989458.4099999999998544.099999999991269 standard atmospheres |}