Get Measurements from the US Ring Size

Enter a US ring size and get the inside circumference and diameter in inches and millimetres.

If you want to purchase a ring, usually, you would measure the size of your ring finger and find the corresponding US ring size. This calculator works reversely and lets you enter a US ring size, and then provides you with the inside measurements.

Calculation

1. enter a US ring Size

Result

1. inside diameter in decimal inch and inch plus a fraction
2. inside ring circumference in decimal inch and inch plus a fraction
3. inside diameter in millimetres
4. inside circumference in millimetres