There are a number of easy ways to find your glass bangle size...
1. Bangle Sizing Kit
2. Measuring Good Fitting Bangles You Already Own

1. Try on Actual Glass Bangles
The best way to ensure a perfect fit is to try on actual glass bangles. BombayJewelry offers a Glass Bangle Sizing Kit specifically for this purpose. It is only $1.99 with free shipping, then once you have found your bangle size and order bangles, you get a $1.99 discount making the bangle sizing kit free!

This will ensure a perfect fit, but you have to wait for the kit to be shipped to you, so it does take some time.

Measure Good Fitting Bangles that You Already Own

To find the bangle size that will correctly fit your wrist, we need to determine the inner diameter that will fit around your hands and to your wrist.

Take out bangles that you already have and measure the inside diameter and compare to the below measurement chart or the measurement stated in the actual bangle listing.

As long as you measure the inside diameter of your current bangles this will be an accurate way to find your bangle size.