Whilst feet are intrinsically individual to each person we are lucky that in India the European size chart is widely used amongst Jutti makers :)
To measure your foot size : Place your foot on paper and draw the outline. Measure the distance between your big toe and your heel in cms for the LENGTH. Then Measure the WIDTH of the widest part of your foot including your bunions.
NOTE - Our Shoes are handmade so measurements shown in Centimeters (cms) are approximate to the Smallest variance.