CARTANY JEWELS / SIZE GUIDE

Find Your Perfect Fit.

The right ring size makes all the difference. Explore our simple measuring methods and US ring size chart to find a comfortable, confident fit.
Close-up of a finely crafted ring

FIND YOUR METHOD

Two Simple Ways to Measure.

Choose the method that works best for you. Both will help you find your US ring size.

01

Measure a Ring You Own

Have a ring that already fits? Measure its inside diameter to find your size.

Measure an Existing Ring

02

Measure Your Finger

Don't have a ring to measure? Use a flexible measuring tape or a strip of paper to find your finger circumference.

Measure Your Finger

METHOD 01

Measure a Ring You Own.

Already have a ring that fits comfortably? You can use its inside diameter to determine your US ring size.
Top view of a ring with the inside diameter marked in millimetersTop view of a ring with the inside diameter marked in millimeters
  1. 01

    Choose the Right Ring

    Select a ring that fits the intended finger comfortably.

  2. 02

    Measure the Inside Diameter

    Place the ring on a flat surface. Measure straight across the inside opening in millimeters, from one inner edge to the opposite inner edge.

  3. 03

    Find Your US Size

    Compare your measurement with our US ring size chart to find the corresponding size.

Measurement tip Measure the inside diameter only, excluding the metal band. For better accuracy, repeat the measurement.

METHOD 02

Measure Your Finger.

Use a flexible measuring tape or a thin strip of paper to find your finger circumference.
WRAP
01

WRAP

Wrap measuring tape or paper comfortably around the base of your finger.

MARK
02

MARK

Mark where the paper overlaps, ensuring it can pass over your knuckle.

MEASURE
03

MEASURE

Measure the marked length in millimeters and compare it with our US ring size chart.

Measure at the end of the day, when your hands are comfortably warm. Repeat for accuracy.

FIND YOUR SIZE

Your Ring Size, Made Simple.

Compare your measurements with our US ring size chart to find your ideal fit.

US ring size conversions
US ring sizeInside diameter (mm)Finger circumference (mm)
314.144.2
3.514.545.5
414.946.8
4.515.348.0
515.749.3
5.516.150.6
616.551.9
6.516.953.1
717.354.4
7.517.755.7
818.157.0
8.518.558.3
919.059.5
9.519.460.8
1019.862.1
10.520.263.4
1120.664.6
11.521.065.9
1221.467.2
12.521.868.5
1322.269.7

Measurements are approximate. Professional sizing is recommended if you are uncertain.