This experiment aimed at studying the kinematics of the handwriting of Arabic digits. Since no systematic description of the writing of Arabic digits exists in the literature, this study aimed at characterising digits according to their motor complexity, and also to examine if digits are sensitive to the position and length effects described in the handwriting of words. A copying task of single and two-digit Arabic numbers was used to meet these objectives, and an ordering of digits according to their velocity profiles is proposed. These characteristics could be a use­ ful tool in the domain of neuropsychology or developmental psychology.