¹
Symbol  Format  Data 

¹  Code Point 
U+00B9 
TeX 
^1 

SVG 
The ‘¹’ (superscript one) symbol is used in mathematics to denote the power of a number or variable.
The superscript two, ², is used in mathematics to denote the square of a number or variable. It also represents the second derivative in calculus when used as a notation for differentiation.
The superscript three, ³, is used in mathematics to denote the cube of a number or variable.