Gigapascals to atmospheres (technical) converter above calculates how many atmospheres (technical) are in 'X' gigapascals (where 'X' is the number of gigapascals to convert to atmospheres (technical)). In order to convert a value from gigapascals to atmospheres (technical) (from GPa to at) type the number of GPa to be converted to at and then click on the 'convert' button.