Follow the simple instructions below to learn how to measure your wrist for bracelet in order to know what size would best fit you according to whether you like it to fit snug or loose. You can follow these written directions or see the video below.
When measuring for bracelets, measure tightly where your wrist is broadest, over the wrist bone. Measure your wrist with a flexible, soft tape measure. This is your actual wrist size, not your bracelet size. 
If you don’t have a tape measure handy, use a strip of paper or thin string, and mark it where it overlaps on your wrist. Then lay the strip flat to measure up to the mark using any ruler.
Why it’s important to use a flat tape measure or small string or strip of paper?
With bracelets, the actual length is not what is a concern, it’s the inner circumference when completed. That’s because the beads themselves take up space on the inside circumference. That makes… making the inside measurement smaller than the length when laid out flat. What is needed to actually wear a bracelet or anklet is for the inner measurements to match the outer circumference of your wrist or ankle. That’s why it is important use a tape measure, strip of paper, or small string — it’s not bulky, so the inner circumference is virtually the same as the lengthy when laid flat.
Using bulky things to measure (like large beaded bracelets and thick chains, etc.) causes the problem. The length when laid flat not being the same as the inner circumference when worn.
You are responsible for giving an accurate and exact WRIST size on the order form. (NOT bracelet size)
If you are more visual, here’s a great video on How to Measure Wrist.
