How to Measure Your Ring Size at Home: 3 Easy Ways

Find your ring size at home in a few minutes, with things you already have, and order with confidence. The goal is simple: get the distance around your finger, then match it to a US size. Here are three easy ways to do it, and a chart to read the result.

Before you measure

• Measure at the end of the day. Fingers can be a little larger then than first thing in the morning.
• Make sure your hand is warm. Cold fingers read smaller.
• Measure the finger you will wear the ring on. Each finger can be a different size.
• Repeat the measurement two or three times and use the most consistent result.

Method 1: a strip of paper or string

1. Cut a thin strip of paper, or a piece of string, about 15 cm (6 in) long.
2. Wrap it around the base of the finger and mark where the end meets the strip.
3. Lay the strip flat against a ruler and read the length in millimeters. That is your circumference.
4. Find the closest number in the chart below.

Method 2: a ring you already own

1. Choose a ring that fits the finger you want, and that is not too loose or too tight.
2. Measure the inside width of the ring, from one inner edge to the opposite one, in millimeters. That is the diameter.
3. Match it to the chart below.

Method 3: a printed ring sizer

If you have a printed ring sizer from another store, you can use it as long as it is printed at 100 percent scale. Check the scale against a ruler before you rely on it.

US ring size chart

• US 6: 51.8 mm circumference, 16.5 mm diameter
• US 7: 54.4 mm circumference, 17.3 mm diameter
• US 8: 57.0 mm circumference, 18.1 mm diameter
• US 9: 59.5 mm circumference, 18.9 mm diameter
• US 10: 62.1 mm circumference, 19.8 mm diameter

If you land between two sizes, choose the larger one for a wide band and the smaller one for a thin band.

Find your size at MARO

Most of our rings come in US sizes 6 to 9, with some in 10. The size options are listed on each product page, and some sizes are made to order, so check the page before you add a ring to your cart. Planning to wear a few together? Our guide on how to stack rings shows how to mix them.

Frequently asked questions

What if I am between sizes?

Choose the larger size for a wider band and the smaller size for a thin band.

Does the same size fit every finger?

Not always. Measure the finger you will wear the ring on.

Can I measure with a tape measure?

Yes. A flexible tape measure wrapped around the base of the finger gives you the circumference directly. Read it in millimeters and use the chart.

Where can I ask about a size?

Write to us at info@marostudiony.com and we will help you choose.

Got your size? Browse our rings and find your favorite.