Ring Size Guide
Finding the right ring size is an important part of creating a piece you'll love wearing every day. At DUOPOEM, we're here to help you find your perfect fit.
Find Your Ring Size
Use our international ring size chart to find your perfect fit. Compare your ring size across different countries or use the inside diameter and circumference measurements for a more accurate fit.
International Ring Size Chart
| US/CAN | UK/AUS | EU/DE | Japan | HK | Diameter (mm) | Circumference (mm) |
|---|---|---|---|---|---|---|
| 2 | D | 42 | 2 | 4 | 13.2 | 41.5 |
| 3 | F | 44 | 4 | 6 | 14.1 | 44.2 |
| 4 | H½ | 47 | 7 | 8 | 14.9 | 46.8 |
| 5 | J½ | 49 | 9 | 11 | 15.7 | 49.3 |
| 6 | M | 52 | 11 | 13 | 16.5 | 51.9 |
| 7 | O | 54 | 14 | 15 | 17.3 | 54.4 |
| 8 | Q | 57 | 17 | 17 | 18.1 | 57.0 |
| 9 | S | 60 | 19 | 20 | 18.9 | 59.5 |
| 10 | T½ | 62 | 21 | 22 | 19.8 | 62.1 |
| 11 | V½ | 65 | 24 | 24 | 20.6 | 64.6 |
| 12 | Y | 67 | ≈26 | 27 | 21.4 | 67.2 |
| 13 | Z+1 | 70 | 27 | 29 | 22.2 | 69.7 |
International ring size conversions are approximate. EU/DE sizes refer to inside circumference in millimeters. DUOPOEM uses US/Canada sizing. Please confirm your ring size using the diameter or circumference measurements before ordering.
How to Measure at Home
Method 1 — Measure Your Finger
Wrap a thin strip of paper around your finger. Mark where the ends meet, then measure the length in millimeters. Match your measurement to our size chart.

Method 2 — Measure an Existing Ring
Choose a ring that fits comfortably and measure its inside diameter. Compare your measurement with our size chart.

Helpful Tip: Measure at room temperature, and make sure your ring feels comfortable without being too tight.
Not Sure About Your Size?
Try Our Physical Ring Sizer

For just $1, add a Physical Ring Sizer to your DUOPOEM ring order for a more accurate fit. Available exclusively with a ring purchase.
How It Works
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Choose Your Rings – Select your favorite DUOPOEM rings and choose "Confirm Later" if you're unsure about your size.
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Add Your Ring Sizer – Select "Add a Physical Ring Sizer" (+$1) on the product page before checkout.
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Receive Your Ring Sizer – We'll send the measuring tool to you first.
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Confirm Your Size – Measure your finger and contact us with your order number and confirmed US/Canada ring size.
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We Craft & Ship Your Rings – Once your size is confirmed, we'll begin crafting your rings and ship them when ready.
Please Note: Physical Ring Sizers are available only with a ring purchase, limited to one per order. Orders requiring a ring sizer will have additional processing time while we wait for your size confirmation.
Your story deserves the perfect fit.