Ring Size Guide
Find your perfect fit before ordering your custom ring.
Ring Size Conversion Chart
Use this chart to compare ring sizes across different countries. GemifySpace uses US ring sizes by default. All measurements are approximate, and we recommend measuring your finger or an existing ring before placing a custom order.
| US Size | Canada Size | UK Size | France Size | Germany Size | Inner Diameter | Inner Circumference |
|---|---|---|---|---|---|---|
| 3 | 3 | F | 44 | 14.0 | 14.0 mm | 44.0 mm |
| 3.5 | 3.5 | G | 45.25 | 14.5 | 14.4 mm | 45.2 mm |
| 4 | 4 | H | 46.5 | 15.0 | 14.8 mm | 46.5 mm |
| 4.5 | 4.5 | I | 47.75 | 15.25 | 15.2 mm | 47.8 mm |
| 5 | 5 | J | 49 | 15.75 | 15.6 mm | 49.0 mm |
| 5.5 | 5.5 | K | 50.25 | 16.0 | 16.0 mm | 50.3 mm |
| 6 | 6 | L | 51.5 | 16.5 | 16.5 mm | 51.8 mm |
| 6.5 | 6.5 | M | 52.75 | 17.0 | 16.9 mm | 53.1 mm |
| 7 | 7 | N | 54 | 17.25 | 17.3 mm | 54.4 mm |
| 7.5 | 7.5 | O | 55.25 | 17.75 | 17.7 mm | 55.6 mm |
| 8 | 8 | P | 56.75 | 18.0 | 18.2 mm | 57.2 mm |
| 8.5 | 8.5 | Q | 58 | 18.5 | 18.6 mm | 58.4 mm |
| 9 | 9 | R | 59.25 | 19.0 | 19.0 mm | 59.7 mm |
| 9.5 | 9.5 | S | 60.75 | 19.5 | 19.4 mm | 61.0 mm |
| 10 | 10 | T | 62 | 20.0 | 19.8 mm | 62.2 mm |
| 10.5 | 10.5 | U | 63.25 | 20.25 | 20.2 mm | 63.5 mm |
| 11 | 11 | V | 64.5 | 20.75 | 20.6 mm | 64.7 mm |
| 11.5 | 11.5 | W | 65.75 | 21.0 | 21.0 mm | 66.0 mm |
| 12 | 12 | X | 67 | 21.25 | 21.4 mm | 67.2 mm |
| 12.5 | 12.5 | Y | 68.25 | 21.75 | 21.8 mm | 68.5 mm |
| 13 | 13 | Z | 69.5 | 22.0 | 22.2 mm | 69.7 mm |
| 13.5 | 13.5 | Z+1 | 70.75 | 22.5 | 22.6 mm | 71.0 mm |
| 14 | 14 | Z+2 | 72 | 23.0 | 23.0 mm | 72.3 mm |
| 14.5 | 14.5 | Z+3 | 73.25 | 23.25 | 23.4 mm | 73.5 mm |
| 15 | 15 | Z+4 | 74.5 | 23.75 | 23.8 mm | 74.8 mm |
Ring size conversions may vary slightly by jeweler. If you are between two sizes, we recommend choosing the larger size for comfort, especially for wider bands or ring sets.
Measure at the end of the day
Fingers are slightly larger in the evening due to heat and activity.
Choose a larger size for wide bands
Wide bands fit more snugly than thin bands. Consider sizing up.
Contact us if you are between sizes
Our team can help you choose the perfect fit for your custom order.
Measure a Ring You Already Own
Already have a ring that fits? Measure its inner diameter and compare it with our ring size chart.
Choose the right ring
Select a ring that fits the finger you want to measure. Make sure it sits comfortably without being too tight or too loose.
Measure the inner diameter
Place the ring on a ruler and measure the inside edge from one side to the other in millimeters.
Avoid measuring the outer edge
Only measure the inner opening of the ring. The outer edge includes the metal thickness and may give an inaccurate size.
Compare with the size chart
Match the inner diameter measurement with our ring size conversion chart to find your US ring size.
Helpful Fit Tips
- Measure a ring that fits the exact finger you plan to wear your new ring on.
- If your measurement falls between two sizes, choose the larger size for comfort.
- Wider bands and ring sets may feel tighter than slim bands.
- GemifySpace uses US ring sizes by default.
Ring Size Guide FAQ
Still unsure about your size? These answers can help you choose the most comfortable fit before placing your order.
You can measure your ring size by using a ring that already fits or by wrapping a strip of paper or soft measuring tape around your finger. Measure in millimeters, then compare the result with our ring size chart.
The easiest method is to measure the inner diameter of a ring that already fits the same finger. Place the ring on a ruler and measure the inside opening from one edge to the other.
Yes. GemifySpace uses US ring sizes by default. If you know your UK, France, Germany, Canada, or international size, you can use our conversion chart to find the closest US size.
If you are between two sizes, we usually recommend choosing the larger size for comfort, especially for wider bands, ring sets, or rings worn for long periods.
Yes, wider bands can feel tighter than slim bands. If you are ordering a wide band or a stacked ring set, consider going up by 0.25 to 0.5 size for a more comfortable fit.
They are often the same size, but fit can vary depending on the band width and design. Wedding bands or ring sets may feel slightly tighter, especially when worn together.
The best time to measure your finger is at the end of the day, when your fingers are usually slightly larger. Avoid measuring when your hands are very cold or swollen.
You can use string, but a paper strip or soft measuring tape is usually more accurate. String can stretch or twist, which may lead to an incorrect measurement.
Some custom rings can be resized, but it depends on the design, gemstone setting, band style, and metal details. We recommend confirming your size carefully before placing a custom order.
If you are unsure, please contact us before ordering. We can help you compare your measurements and choose the most comfortable size for your ring.
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