Sizing Support – Marrow Fine
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Find Your Perfect Fit

Need sizing support? We're here for you.

Designed to fit, made to last.

Find your perfect fit with our printable ring sizer—designed for your convenience, this tool allows you to find your ideal size from home.

Pro Tips—

• For bands with a thicker width (4-6mm), we recommend adjusting the size to a quarter or half size up.

• Measure in a warm, comfortable environment: room temperature is ideal as measuring when your fingers are cold or too hot can cause swelling or shrinkage.

• Your dominant hand’s fingers might be slightly larger, so make sure to size the finger on the hand where you will be wearing the ring.

Not in a hurry?

Shop our Ring Sizer Tool

Shipped directly to your door, so you can measure your size with ease and confidence.

INTERNATIONAL CONVERSION CHART

Inside Circumference (IN) Inside Circumference (MM) US, Canada, Mexico UK, Australia, Ireland, New Zealand, South Africa France Germany, Russia, Ukraine, Asia India, China, Japan, South America, Turkey, Israel Italy, Spain, Netherlands, Switzerland
1.74 44.2 3 F 44 14 4 4
1.77 44.8 3.25 F 1/2 45 14 1/4 --- 4 5/8
1.79 45.5 3.5 G 45.5 14 1/2 5 5 1/4
1.82 46.1 3.75 G 1/2 46 14 3/4 6 5 7/8
1.84 46.8 4 H 47 15 7 6 1/2
1.87 47.4 4.25 H 1/2 47.5 --- --- 7 1/8
1.89 48 4.5 I 48 15 1/4 8 7 3/4
1.92 48.7 4.75 J 48.5 15 1/2 --- 8 3/8
1.94 49.3 5 J 1/2 49 15 3/4 9 9
1.97 50 5.25 K 50 16 --- 9 5/8
1.99 50.6 5.5 K 1/2 50.5 16 1/4 10 10 1/4
2.02 51.2 5.75 L 51 --- 11 10 7/8
2.04 51.9 6 L 1/2 52 16 1/2 12 11 1/2
2.07 52.5 6.25 M 52.5 16 3/4 --- 12 1/8
2.09 53.1 6.5 M 1/2 53 17 13 12 3/4
2.12 53.8 6.75 N 54 --- --- 13 3/8
2.14 54.4 7 N 1/2 54.5 17 1/4 14 14
2.17 55.1 7.25 O 55 17 1/2 --- 14 5/8
2.19 55.7 7.5 O 1/2 56 17 3/4 15 15 1/4
2.22 56.3 7.75 P 56.5 18 --- 15 7/8
2.24 57 8 P 1/2 57 --- 16 16 1/2
2.27 57.6 8.25 Q 58 18 1/4 --- 17 1/8
2.29 58.3 8.5 Q 1/2 58.5 18 1/2 17 17 3/4
2.32 58.9 8.75 R 59 18 3/4 --- 18 3/8
2.34 59.5 9 R 1/2 60 19 18 19
2.37 60.2 9.25 S 60.5 19 1/4 --- 19 5/8
2.39 60.8 9.5 S 1/2 61 19 1/2 19 20 1/4
2.42 61.4 9.75 T 61.5 --- --- 20 7/8
2.44 62.1 10 T 1/2 62 19 3/4 20 21 1/2
2.47 62.7 10.25 U 63 20 21 22 1/8
2.49 63.4 10.5 U 1/2 63.5 --- 22 22 3/4
2.52 64 10.75 V 64 20 1/2 --- 23 3/8
2.54 64.6 11 V 1/2 65 20 3/4 23 24
2.57 65.3 11.25 W 65.5 --- --- 24 5/8
2.59 65.9 11.5 W 1/2 66 21 24 25 1/4
2.62 66.6 11.75 X 67 21 1/4 --- 25 7/8
2.65 67.2 12 X 1/2 67.5 21 1/2 25 26 1/2
2.68 68.1 12.25 Y 68 --- --- 27 1/8
2.71 68.5 12.5 Z 69 21 3/4 26 27 3/4
2.72 69.1 12.75 Z 1/2 69.5 --- --- 28 3/8
2.75 69.7 13 --- 70 22 27 29

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