- 平方米 píngfāngmǐ square meter
- 平方公里 píngfānggōnglǐ square kilometer
- 平方根 píngfānggēn square root
- 平方英尺 píngfāngyīngchǐ square footsquare foot (unit of area equal to 0.093 m²)
- 平方英里 píngfāngyīnglǐ square milea unit of area equal to the area of a square with sides of one mile, approximately 2.59 square kilometers
- 平方反比律 píngfāngfǎnbǐlǜ inverse-square lawinverse square law (physics)
- 平方千米 píngfāngqiānmǐ square kilometer
- 平方反比定律 píngfāngfǎnbǐdìnglǜ inverse-square lawinverse-square law (physics)
- 最小平方法 zuìxiǎopíngfāngfǎ least squares methodthe method of least squares in mathematics
- 平方平均数 píngfāngpíngjūnshù root mean squareThe square root of the arithmetic mean of the squares of a set of values, also known as the quadratic mean.
