1. Using a ruler, measure the inside diameter of a
ring that fits around your desired finger (in mm).

2. Compare the measurement with the table below.

3. Round up if you are between sizes.

Option 1: I don't have a printer.

1. Cut a thin strip of paper 10-12 cm long.

2. Wrap the strip of paper tightly around the desired finger.

3. With a pen or pencil, mark the point where the paper overlaps itself.

4. Lay the strip of paper on a flat surface and use a ruler to measure the distance from the end of the strip to the mark you made in millimetres. This will give you the circumference of your finger.

5. Use the table below to convert your measurement into standard US sizes.

6. If you are between sizes, it is better to round up than down.

Option 2 : I do have a printer

1. Print our ring sizer PDF (hier) on standard A4 paper at 100% scale (make sure scaling is disabled in your print dialog).

2. Measure the grey section - it should be 8.89 cm from end to end.

3. Cut out the measuring tool (the top part that looks like a ruler), and wrap the piece of paper tightly around the desired finger. The number closest to the 'Read size here' line is your size.

4. Once you have a ring that fits you well (or one you know will fit the person you are giving it to), place the ring on top of each sizing circle until you find the right size. The matching circle should fit the ring perfectly.

5. If you are between sizes, it is better to round up than down.