Typically toenails grow 2 times slower than finger nails. Fingernails grow at a rate of about 1 mm per month every 3 months, and toenails grow at a rate of about 1 mm every 9 months, so it can be extrapolated that toenails grow 2 times slower than fingernails. Fingernails and toenails are both accessories to the skin. Factors that affect the growth rate of nails include age, mechanical stimulation, and blood supply: 1. The older you are, the faster your nails grow, and after the age of 30, they slow down; 2. Mechanical stimulation: regular friction can accelerate the growth rate of nails, generally speaking, the number of times we use our hands and the possibility of stimulation of the hands more than the feet, and therefore by the stimulation of the sake of the fingernails will be compensated to accelerate the growth rate in order to play a protective role; 3. blood supply: rich blood supply can accelerate the growth rate of nails, hand blood supply is more adequate than the foot, so the hand nails than the foot toenail growth rate. If abnormalities occur in the growth rate and shape of finger/toe nails, you should consult a doctor in time to clarify whether they are caused by pathologic factors, and if necessary, adopt a targeted program of treatment.