Print this page at 100% scale to get actual-size ring circles and a paper finger strip sizer.
Place your ring flat directly over the printed size circles. Inspect the inner edge alignment against these 3 visual benchmarks.
Printed black line is clearly visible inside the ring opening with white gap.
The inner edge of the ring rests directly on the printed line without hiding or overflowing it.
The printed black circle extends beyond the outside border of the ring.
Cut along the outer solid boundary line of the paper sizer.
Carefully cut a small vertical slit along the marked line labeled "A".
Wrap strip around finger base and slip pointed tip "B" through slit "A".
Pull comfortably snug and read the size number aligned with slit "A".
After printing, verify the line below measures exactly 50 mm (5 cm) with a physical ruler.
← 50 mm →
Place your ring over the circles below. The correct size is where the inside diameter matches the circle's outer line.
US 4
14.9 mm
US 5
15.7 mm
US 6
16.5 mm
US 6½
16.9 mm
US 7
17.3 mm
US 7½
17.7 mm
US 8
18.1 mm
US 8½
18.5 mm
US 9
18.9 mm
US 9½
19.4 mm
US 10
19.8 mm
US 10½
20.2 mm
US 11
20.6 mm
US 12
21.4 mm
US 13
22.2 mm
Print at 100% scale. Cut out along the dashed line to get an exact physical finger measuring tape.
Cut along the outer dashed line ✂️ and make a small vertical slit at SLIT A (0 mm).
Wrap strip snugly around the widest part of your finger, then push pointed end [B] through SLIT A.
Pull gently until snug. The number aligned at SLIT A is your exact US ring size.
✂️ CUT ALONG DASHED LINE
46.8 mm
UK H · EU 47
49.3 mm
UK J · EU 49
51.9 mm
UK L · EU 52
54.4 mm
UK N · EU 54
57.0 mm
UK P · EU 57
59.5 mm
UK R · EU 59
62.1 mm
UK T · EU 62
64.6 mm
UK V · EU 65
67.2 mm
UK X · EU 67
69.7 mm
UK Z½ · EU 70
| US Size | UK Size | EU (ISO) | Diameter (Ø mm) | Circumference (mm) |
|---|---|---|---|---|
| 4 | H | 47 | 14.9 | 46.8 |
| 5 | J | 49 | 15.7 | 49.3 |
| 6 | L | 52 | 16.5 | 51.9 |
| 6½ | M | 53 | 16.9 | 53.1 |
| 7 | N | 54 | 17.3 | 54.4 |
| 7½ | O | 56 | 17.7 | 55.7 |
| 8 | P | 57 | 18.1 | 57 |
| 8½ | Q | 58 | 18.5 | 58.3 |
| 9 | R | 59 | 18.9 | 59.5 |
| 9½ | S | 61 | 19.4 | 60.8 |
| 10 | T | 62 | 19.8 | 62.1 |
| 10½ | U | 63 | 20.2 | 63.4 |
| 11 | V | 65 | 20.6 | 64.6 |
| 12 | X | 67 | 21.4 | 67.2 |
| 13 | Z½ | 70 | 22.2 | 69.7 |
Cut out the ruler strip in the section above and wrap it snugly around your ring finger and knuckle. Find the matching size aligned at SLIT A. Repeat 3 times to ensure an accurate reading, then you're ready to order!
If you do not have a printer, open freeringsizer.com on your computer, tablet, or phone. Hold an existing ring directly against the interactive on-screen circles and calibrate the screen true-to-size using any standard bank card or coin.
When in doubt between two sizes, always choose the larger size. For wider ring bands (6mm or more), order a half size larger because wider bands create more surface contact and fit tighter on the finger.
Need Australian/UK letter sizes (A–Z+), European mm circumference (44–70), or Japanese sizes? Check our complete conversion charts, calculator, and step-by-step sizing guides at freeringsizer.com.
Ensure scale is set to 100% in your printer dialog (do not choose "fit to page").