Tsarin lambar hexadecimal tsarin lamba ne na tushe-16 da aka saba amfani da shi a cikin kwamfuta da lantarki. Yana amfani da alamomi guda goma sha shida don wakiltar lambobi, waɗanda sune lambobi goma na decimal (0-9) da ƙarin alamomi shida (AF) waɗanda ke wakiltar lambobi 10-15.A cikin tsarin hexadecimal, kowane lambobi yana wakiltar lambobi. Ƙarfin 16, tare da mafi ƙarancin lambobi a dama da mafi mahimmancin lambobi a hagu. Misali, lambar 3F a hexadecimal tana wakiltar 3 x 16^1 15 x 16^0 a cikin adadi, wanda yayi daidai da 63. Tsarin, tun da kowace lamba hexadecimal na iya wakiltar rukuni na lambobi huɗu (bits). Wannan yana ba da sauƙin yin aiki tare da sarrafa manyan lambobi a cikin shirye-shiryen kwamfuta da na'urorin lantarki na dijital.