Measure your foot length from heel to longest toe
Measure both feet and use the larger measurement
Measure your foot width at the widest part
Check the size chart for the brand you want
Compare your measurements to the chart
Try shoes on later in the day when feet are slightly larger
Wear the socks you plan to use with the shoes
Leave a little space at the toe for comfort
Walk a few steps to check fit
If one foot is larger, choose the size that fits the larger foot