Use the <sub> tag to create subscripted text. The HTML <sub> tag is used for defining subscript text like,
x<sub>1</sub>+ x<sub>2</sub>
Example
You can try to run the following code to display subscripted text in HTML −
<!DOCTYPE html> <html> <head> <title>HTML sub Tag</title> </head> <body> Value of x<sub>1</sub> + x<sub>2</sub> = 17 </body> </html>