RingSizeFind
Ring Size Finder — Find Your Perfect Ring Size
Welcome to RingSizeFind — your friendly helper for accurate ring sizing. Whether you’re buying an engagement ring, a wedding band, or a simple everyday piece, we make measuring easy, reliable, and stress-free.
Measure Ring Diameter
Your Ring Size:
Convert Ring Sizes
Converted Sizes:
Ring Size Chart
| US | UK | EU | Diameter (mm) | Circumference (mm) |
|---|
Why accurate ring sizing matters (and why you should care)
Getting the right ring size isn’t just about comfort — it’s about safety, appearance, and long‑term wearability. A ring that’s too tight can be uncomfortable and hard to remove; a ring that’s too loose can spin, snag, or even fall off. We want your ring to feel like it was made for you — snug enough to stay put, comfortable enough to wear all day.
On top of that, buying rings online adds a layer of uncertainty. That’s why RingSizeFind focuses on practical, tested methods (plus free printable tools) you can use at home or share with a jeweler.
Everything we offer — quick overview
- Free printable ring size chart (PDF) — download, print, and match a ring to the chart.
- Step-by-step measurement guides — multiple methods so you can choose what works best.
- International conversion tables — US, UK, EU, Japan, India and more.
- Special guidance for wide bands, comfort-fit rings, and resizing considerations.
- Expert tips and FAQs — answers to common problems and mistakes.
How to measure your ring size at home — friendly step-by-step
We’ll walk through three easy methods. Pick the one that’s most convenient for you.
Method A — Use a ring you already own
- Find a ring that fits the finger you want to size.
- Place it over the printed RingSizeFind chart and center it on the circles until you find the best match.
- Double-check the inner diameter in millimeters and match it to our conversion table below.
This is the most accurate home method if you have a well-fitting ring for that finger.
Method B — String or paper strip (fast and simple)
- Cut a thin strip of paper or use a piece of non-stretchy string.
- Wrap it snugly around the base of your finger (not too tight) and mark where the ends meet.
- Measure the length in millimeters and use our circumference-to-size table to find your size.
Tip: Measure at the end of the day when your fingers are their largest and do the measurement on the finger where the ring will sit.
Method C — Printable sizer (most accurate if printed correctly)
- Download and print our PDF printable chart at 100% scale (do NOT scale to fit).
- Follow the instructions on the PDF for using the sizer or comparing an existing ring.
- Confirm the measured diameter with our conversion table below.
Make sure your printer settings don’t scale the page. We include a 1 cm calibration box on the PDF so you can verify print accuracy.
Ring size conversion — US, UK, EU, Japan and more
Ring sizes vary by country. Below is a simplified conversion table — use our full Ring Size Guide for printable, downloadable tables and precise measurements.
| US | UK | Inner Diameter (mm) | Circumference (mm) |
|---|---|---|---|
| 4 | H 1/2 | 14.8 | 46.5 |
| 5 | J 1/2 | 15.7 | 49.3 |
| 6 | L | 16.5 | 51.9 |
| 7 | N | 17.3 | 54.4 |
| 8 | P | 18.2 | 57.0 |
| 9 | R | 18.9 | 59.5 |
Note: These are common reference points — always use an actual measurement (diameter or circumference) whenever possible for best accuracy.
Average ring sizes — a quick guide
If you’re buying a ring as a gift and don’t know the recipient’s size, these averages can help as a starting point:
- Women (average): US 6–7
- Men (average): US 9–10
- Young adults/teens: Varies widely — measure when possible
We also break down averages by country and provide tips on choosing a slightly larger size for comfort when gifting — see Average Ring Size.
How band width and profile affect fit
Wide bands cover more finger surface and often feel tighter than narrow bands of the same number. Comfort-fit interiors, beveled edges, and tapered designs change how a ring sits. If you love bold, wide bands, you may need to size up 0.25–0.5 sizes — our article on Ring Size vs Band Width explains this in detail.
Common mistakes (and how to avoid them)
- Measuring cold fingers: Cold temperatures shrink fingers — measure at normal room temperature.
- Using stretchy string: Some strings stretch and give a false large measurement — use non-stretchy material or the printable sizer.
- Scaling the printout: If your PDF is scaled to fit the page, the measurements will be wrong. Use the 1 cm calibration box on our printable PDF.
- Ignoring band width: A 2 mm band and an 8 mm band are very different experiences even at the same size.
Printable & digital tools we recommend
To make life easier, RingSizeFind provides:
- Printable Ring Size Chart (PDF) with a calibration box.
- Step-by-step visual guides and a ring size FAQ.
- Conversion tables and measurement converters right on the site.
If you prefer apps, we list and test several ring-sizing apps on our blog with pros and cons to help you choose.
When to visit a jeweler
Home methods are excellent, but certain situations call for a professional:
- When buying a very expensive or custom engagement ring.
- If your finger has an unusual shape or you suspect swelling issues.
- When resizing is likely and you want the jeweler to advise on limits for precious metals or complex settings.
Find a certified jeweler and ask them to measure with a steel ring mandrel for the most reliable result. For technical information about gem settings and materials, we reference the Gemological Institute of America (GIA).
FAQs — quick answers to common ring size questions
Q: How can I find my ring size without measuring tools?
A: Use a ring you already own and compare it to our printable chart, or wrap a non-stretchy string around your finger and measure the length. Method B (string/paper) also works well when done carefully.
Q: Do fingers swell at different times?
A: Yes — temperature, activity, and time of day can all cause slight swelling. Measure at the end of the day for a conservative fit.
Q: Should I size up for a wide ring?
A: Often yes. For bands wider than 6 mm, consider sizing up 0.25–0.5 sizes depending on profile and comfort-fit design.
Explore more on RingSizeFind
About the Author — Michael Smith
Michael Smith is a London-based jewellery designer and author with over 15 years of experience creating timeless, handcrafted pieces. A graduate of the University of the Arts London (UAL) specializing in Jewelry Design, Michael blends creativity with technical expertise to bring precision and artistry to every creation.
His professional insight has guided the content and structure of RingSizeFind’s ring measurement resources and practical fit guides that help users find accurate sizes from home. You can connect with him on LinkedIn or explore his inspirations on Pinterest.
Reviewed by: Michael Smith, Jewellery Designer • Verified by: RingSizeFind Editorial Team • Last reviewed: October 19, 2025
Have questions? Contact the RingSizeFind Team — we’re happy to help you find your perfect size or guide you through custom jewelry fitting.