How to Measure Your Ring Size at Home

While it’s faster and likely more accurate to measure your ring size at a jewelry shop using their tools, we understand that you might want to know your size immediately, especially if you’re ordering online and want to know NOW! If you do get the chance to visit a jewelry store, measure all of your fingers and take notes!

Measuring your ring or your finger is easy, and these methods work for both standard and first-knuckle “stations.” Choose the approach that works best for you.

Measuring a Ring

If you already have a ring that comfortably fits the finger you’re sizing, you can measure that ring online or use a printed chart.

Tech for the win

David Parker’s Ring Size Online. This tool is easy to use. All you need is your phone or computer and a credit card or a ruler to calibrate the on-screen ruler. No downloads or signups required. The instructions are straightforward, and the results were accurate for the three rings we tried.
Apps: There are a lot apps designed explicitly to measure rings. We tried one, but it wasn’t very accurate, so we’re not ready to endorse any of these.

Lower Tech

Printed Ring Size Chart: You can print a true-to-size ring size chart from the internet. Calibrate and print the chart, then lay your ring over the circles until you find one that fits the inside of the ring exactly. Make sure to print the chart for accuracy, as screen sizes and aspect ratios can vary.

TIP: If the ring is between sizes, order the larger size

Measuring Your Finger

Whether you want to wear the ring at the base of your finger or at the first knuckle, the same approach works. Just measure in the right spot!

Tools You Can Use

Finger Sizing Tool: You can find true-to-size measurement tools online. Print one out and cut out the measuring strip. It’s basically a tape measure marked with ring sizes instead of millimeters.
Flexible Tape Measure: Wrap it around the part of the finger you’re trying to fit and measure the circumference of your finger in millimeters.
String, Paper, Ribbon, etc.: If you don’t have a flexible tape measure, use a piece of string or any non-stretchy material. Wrap it around your finger and mark where it overlaps. Then measure the length of the string with a standard ruler, tape measure, or a ruler app.

Converting Measurements

Once you have the measurement, check the ring size conversion chart below to convert from millimeters to ring size.

TIP: If your finger falls between sizes, order the larger size.

Tips for Measuring Accurately

Fit: Make sure the paper or string fits your finger snugly, but not too tight. You want it to be comfortable without squeezing.
Double Check: No matter which method you use, try it a few times to ensure accuracy. It's easy to slip and be off by a few millimeters.
Check Again, Later: Your fingers can change size throughout the day due to temperature, workouts, salty foods, etc. Measure in the morning, after a workout, and at the end of the day, then average those results for the most accurate size.
Knuckle Alert: If your knuckle is larger than the base of your finger, you’ll need to size up so the ring can slide into the right place.
Don’t Assume: Your fingers aren’t exactly the same size on both hands, so measure the specific finger you intend to wear the ring on.

Measuring for Gifts

If you're shopping for someone else and don't know their ring size, you can try measuring another ring they own or find someone with similar-sized hands for a comparison. However, this method can be a bit risky. For reference, the most common women's ring finger size is 6, typically ranging between 5 and 7. For pinkie fingers, the size usually falls between 3 and 4. While these averages can be helpful, finger sizes can vary dramatically, so measuring whenever possible is the best approach.

If you're unsure about which size to order, it's better to order a slightly larger ring than a smaller one. It's much easier for a jeweler to size down a ring than to size it up.

We hope this guide helps you feel confident about finding your perfect ring size. Now you're all set to order rings online with ease! Happy shopping!

Ring Size Chart

Finger Circumference (mm)	US Ring Size
44.2	3
45.5	3.5
46.8	4
48.0	4.5
49.3	5
50.6	5.5
51.9	6
53.1	6.5
54.4	7
55.7	7.5
57.0	8
58.3	8.5
59.5	9