Atmospheres (standard) to torr conversion calculator shown above calculates how many torr are in 'X' atmospheres (standard) (where 'X' is the number of atmospheres (standard) to convert to torr). In order to convert a value from atmospheres (standard) to torr (from atm to Torr) simply type the number of atm to be converted to Torr and then click on the 'convert' button.