Wrap a string or strip of paper snugly around the base of your finger.
Mark where the string ends meet, then lay it flat against a ruler.
Enter your measurement below — the ring visual updates instantly to match.
Browse all ring sizes in one place. Use the first two tabs to find your size.
| US | UK/AU | EU | Ø mm | Circ mm |
|---|
Pro Tips
- Measure at the end of the day — fingers are largest in the evening
- Wider bands (6mm+) fit tighter — consider going up half a size
- Your non-dominant hand usually has slightly smaller fingers
- For best accuracy, combine both methods: match a ring and measure your finger
Printable Ring Sizer
Print this guide to measure your ring size with a paper strip — no tools needed.
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Ring Size Tips
Measure at Night
Your fingers are largest in the evening. Measure then for the most accurate fit.
Consider Climate
Fingers expand in heat and shrink in cold. Measure at room temperature.
Wider Band = Tighter
Rings with wider bands (6mm+) fit tighter. Consider going up half a size.
Knuckle Test
The ring should slide over your knuckle with slight resistance — not too loose, not too tight.
Frequently Asked Questions
Match a Ring: Place a ring you already own on the circle, then drag up/down on the ring visual or use the slider until the ring band matches its inner diameter. Measure Finger: Enter your finger's circumference in mm and we'll find the closest size. Size Guide: Browse the conversion table for all international ring sizes.
Always measure the specific finger you plan to wear the ring on. Ring sizes vary between fingers — your index and middle fingers are typically larger than your ring and pinky fingers.
If you're between sizes, we recommend going up half a size. A slightly looser ring can be resized down, while a tight ring is uncomfortable and harder to adjust. Our slider supports half sizes for precise sizing.
Ring sizing standards vary by region. US sizes use numbers (3–15), UK/AU use letters (A–Z+), EU uses circumference in mm (44–75). Our converter shows all standards.
Most rings can be resized up or down by 1–2 sizes, depending on the design and metal. Rings with intricate settings or pavé stones may have limitations. Contact Cordial Jewelry for guidance.
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