Find Your Perfect Ring Size
Every Kleora ring is handcrafted to precision comfort-fit proportions. Download our calibrated 1:1 printable ring sizer, measure an existing ring, or consult our international conversion chart.
The Kleora Printable Ring Sizer
Our calibrated cut-out sizer gives the most reliable measurement from home because it wraps physically around your finger and tests knuckle clearance with comfort-fit tension.
How to Measure with Your Printable Sizer
Print at 100% Scale
Open the downloaded PDF file. In your print dialogue, ensure the scale is explicitly set to 100% or "Actual Size". Never select "Fit to Page".
Verify Scale Calibration
Confirm calibration with a standard ruler: the 3½ inch reference bar must measure exactly 8.89 cm, or place any standard bank card over the test box.
Cut Sizer & Make Slit
Cut neatly along the outer edge of the sizer. Make a small, clean incision along the dotted slit marked "CUT HERE". Slide the pointed end through.
Thread tab outward
Wrap & Read Exact Size
Slide loop over finger. Pull snug until comfortable. Ensure it slides smoothly over your knuckle. The number lined up with the slit edge is your US size.
Check knuckle fit
Three Accurate Ways to Find Your Ring Size
Whether you have a printer, an existing ring, or a ribbon at hand, select the approach tailored to your setting.
1. The Printable Ring Sizer
The gold standard for at-home measuring. Wraps physically around the finger so you can directly test knuckle clearance and band tension.
- Replicates physical band fit
- Includes 1:1 ruler & credit card check
- Fast 2-minute measurement
2. Measure an Existing Ring
Borrow a ring they wear on the intended finger. Lay it flat and measure the inner diameter across the widest point in millimeters.
- 100% discreet for surprise gifts
- Measure inside edge to inside edge only
- Match millimeter reading to table
3. Paper Strip or Ribbon
Wrap a non-stretching strip of paper snugly around your finger base. Mark where ends overlap, lay flat, and measure circumference with a ruler.
- Requires only paper, pen, and ruler
- Check knuckle clearance as well
- Match circumference to table below
International Ring Size Conversion Chart
Kleora rings adhere to precision US sizing benchmarks. Use the interactive search below or filter by category to find your regional equivalent.
| US Size | Inside Diameter (mm) | Inside Circumference (mm) | UK / AU / SA | Europe / ISO |
|---|---|---|---|---|
| 3.0 | 14.04 mm | 44.1 mm | F | 44.0 |
| 3.25 | 14.24 mm | 44.7 mm | F½ | 44.7 |
| 3.5 | 14.45 mm | 45.4 mm | G | 45.5 |
| 3.75 | 14.65 mm | 46.0 mm | G½ | 46.0 |
| 4.0 | 14.86 mm | 46.7 mm | H | 47.0 |
| 4.25 | 15.07 mm | 47.3 mm | H½ | 47.3 |
| 4.5 | 15.27 mm | 48.0 mm | I | 48.0 |
| 4.75 | 15.48 mm | 48.6 mm | I½ | 48.6 |
| 5.0 | 15.69 mm | 49.3 mm | J½ | 49.5 |
| 5.25 | 15.89 mm | 49.9 mm | K | 50.0 |
| 5.5 | 16.10 mm | 50.6 mm | K½ | 51.0 |
| 5.75 | 16.30 mm | 51.2 mm | L | 51.5 |
| 6.0 Sample | 16.51 mm | 51.9 mm | L½ | 52.0 |
| 6.25 | 16.72 mm | 52.5 mm | M | 52.5 |
| 6.5 Sample | 16.92 mm | 53.1 mm | M½ | 53.5 |
| 6.75 | 17.13 mm | 53.8 mm | N | 54.0 |
| 7.0 Sample | 17.33 mm | 54.4 mm | N½ | 54.5 |
| 7.25 | 17.54 mm | 55.1 mm | O | 55.0 |
| 7.5 | 17.75 mm | 55.7 mm | O½ | 56.0 |
| 7.75 | 17.95 mm | 56.4 mm | P | 56.5 |
| 8.0 | 18.16 mm | 57.0 mm | P½ | 57.0 |
| 8.25 | 18.37 mm | 57.7 mm | Q | 57.5 |
| 8.5 | 18.57 mm | 58.3 mm | Q½ | 58.5 |
| 8.75 | 18.78 mm | 59.0 mm | R | 59.0 |
| 9.0 | 18.98 mm | 59.5 mm | R½ | 60.0 |
| 9.25 | 19.19 mm | 60.3 mm | S | 60.5 |
| 9.5 | 19.40 mm | 60.8 mm | S½ | 61.0 |
| 9.75 | 19.60 mm | 61.6 mm | T | 61.5 |
| 10.0 | 19.81 mm | 62.1 mm | T½ | 62.5 |
| 10.25 | 20.10 mm | 63.1 mm | U | 63.0 |
| 10.5 | 20.22 mm | 63.5 mm | U½ | 63.5 |
| 10.75 | 20.43 mm | 64.2 mm | V | 64.0 |
| 11.0 | 20.63 mm | 64.6 mm | V½ | 65.0 |
| 11.25 | 20.84 mm | 65.5 mm | W | 65.5 |
| 11.5 | 21.05 mm | 65.9 mm | W½ | 66.0 |
| 11.75 | 21.25 mm | 66.8 mm | X | 67.0 |
| 12.0 | 21.46 mm | 67.2 mm | X½ | 67.5 |
| 12.25 | 21.66 mm | 68.0 mm | Y | 68.0 |
| 12.5 | 21.87 mm | 68.5 mm | Y½ | 68.5 |
| 12.75 | 22.08 mm | 69.4 mm | Z | 69.5 |
| 13.0 | 22.28 mm | 69.7 mm | Z½ | 70.0 |
| 13.25 | 22.49 mm | 70.6 mm | Z+1 | 70.5 |
| 13.5 | 22.69 mm | 71.0 mm | Z+1½ | 71.5 |
| 13.75 | 22.90 mm | 71.9 mm | Z+2 | 72.0 |
| 14.0 | 23.11 mm | 72.6 mm | Z+2½ | 72.5 |
Expert Sizing Advice from Kleora Gemologists
Fine jewelry proportion insights to ensure lifelong comfort and optimal diamond balance.
Time of Day & Temperature
Fingers fluctuate throughout the day. Measure in the evening when hands are warm. Avoid measuring when cold, which can temporarily shrink finger size by half a size.
Wide Band Considerations
Rings with wider shanks (4 mm or wider, such as eternity or cigar bands) feel tighter on the finger. We suggest ordering one half-size larger than your standard measurement.
Knuckle vs. Base Clearance
If your knuckle is noticeably larger than the base of your finger, measure both points and select a size in between so the ring slides securely over your knuckle without spinning loosely.
Planning a Surprise Proposal?
Borrow a ring they currently wear on their ring finger (left hand for engagement). Measure inside diameter across the widest central point and compare against our diameter chart.
Prefer a Physical Ring Multi-Sizer Gauge?
Our client concierge will happily mail you a complimentary precision plastic ring multi-sizer gauge delivered directly to your doorstep at no charge with zero obligation.
How do I find my ring size?
Use our Ring Size Guide, or visit a local jeweler to have your finger professionally measured for the most accurate fit.
We recommend professional sizing if you’re unsure of your ring size.
How do I know what ring size to buy? What if I get the wrong size?
You can use our Ring Size Guide. For the most accurate fit, we recommend visiting a local jeweler for professional measurement.
No worries if you choose the wrong size! We offer one complimentary ring resize within 30 days of delivery on eligible rings.
Please note: Some wedding bands cannot be resized and are not eligible for this service.
To request a resize, contact our support team through live chat or email support@kleoradiamond.com. Please have your order number and desired ring size ready so we can assist you quickly.
Do you offer free resizing for all your rings?
Yes! We offer one complimentary ring resize within 30 days of delivery on eligible rings.
To request a resize, simply contact our support team through live chat or email us at support@kleoradiamond.com. Please have your order number and desired ring size ready so we can assist you quickly.
Please note: Certain wedding bands cannot be resized and are not covered under this policy.