1, go on calculator 2, enter ur shoe size 3, add 2 zeros 4, minus the year u wer born 5, add the year ur in now 6, look at the last 2 digits of ur answer 7, it should be how old u r now or how old u will be turning soon **try it, it worked 4 me im 10 almost 11 it works** -Elijah2323