Ring Size Guide

Selecting the correct ring size is essential for both comfort and wearability. Use the guide below to determine your ideal size.

US Ring Size Chart

US Size	Inside Diameter (mm)	Inside Circumference (mm)
3.0	14.1 mm	44.2 mm
3.5	14.5 mm	45.5 mm
4.0	14.9 mm	46.8 mm
4.5	15.3 mm	48.0 mm
5.0	15.7 mm	49.3 mm
5.5	16.1 mm	50.6 mm
6.0	16.5 mm	51.9 mm
6.5	16.9 mm	53.1 mm
7.0	17.3 mm	54.4 mm
7.5	17.7 mm	55.7 mm
8.0	18.1 mm	57.0 mm
8.5	18.5 mm	58.3 mm
9.0	18.9 mm	59.5 mm
9.5	19.4 mm	60.8 mm
10.0	19.8 mm	62.1 mm
10.5	20.2 mm	63.4 mm
11.0	20.6 mm	64.6 mm
11.5	21.0 mm	65.9 mm
12.0	21.4 mm	67.2 mm
12.5	21.8 mm	68.5 mm
13.0	22.2 mm	69.7 mm

How to Measure Your Ring Size at Home

Option 1: Measure an Existing Ring

Choose a ring that fits the intended finger perfectly.
Measure the inside diameter with a ruler (in millimeters).
Use the chart above to match it to your US ring size.

Option 2: String or Paper Method

Cut a thin strip of paper or string.
Wrap it around the base of your finger where the ring will sit.
Mark the point where the ends meet.
Measure the strip with a ruler (in millimeters).
Compare the measurement with the inside circumference column in the chart.

Tips for Best Accuracy

Measure at the end of the day when your fingers are at their largest.
Avoid measuring when your hands are cold, as fingers shrink slightly.
If you are between two sizes, we recommend choosing the larger one for comfort.
Keep in mind that wider rings may feel tighter — consider sizing up by half a size.
Please note that certain made-to-order rings may incur resizing fees if an incorrect size is selected at the time of purchase.

If you are purchasing a gift or are unsure of your size, our team will be happy to assist you. Contact us at sales@laurasayanjewelry.com before placing your order.