For greater data accuracy (steps taken, calories burned, distance walked), walk 10 paces.
Measure the total distance walked in inches. Divide that number by "10". This is your stride length.
Enter the closest whole number into the pedometer.
You may want to re-measure your stride length from time to time to maintain accurate step counting.
To maximize accuracy, walk 15 steps on the surface on which you will walk the most while an observer marks off the start point of your fourth step and end point of your 13th step.