How to Measure Your Ring Size at Home (US Sizing Chart)
Why Ring Size Matters
A ring that fits is a ring you will actually wear. Getting the size right at home saves you a return, a wait, and the disappointment of a ring that will not go on (or will not stay on). Here are the simplest, most reliable methods — no trip to a jeweler required.
Method 1: Paper Strip
- Cut a thin strip of paper about 10cm (4 inches) long and 5mm wide.
- Wrap it snugly around the base of your finger — not too tight, not loose.
- Mark where the paper overlaps with a pen.
- Measure the length in millimeters with a ruler.
- Match that circumference to the chart below.
Method 2: An Existing Ring
If you already own a ring that fits the intended finger, measure its inner diameter in millimeters and compare it to the "Inner Diameter" column. This is often the most accurate method.
Method 3: Printable Ring Sizer
Many jewelers offer a free printable sizer. Print at 100% scale (no "fit to page"), cut, and wrap. Just confirm your printer has not resized the page.
US Ring Size Chart (Circumference & Diameter in mm)
| US Size | Inner Circumference | Inner Diameter |
|---|---|---|
| 4 | 46.8 mm | 14.9 mm |
| 5 | 49.3 mm | 15.7 mm |
| 6 | 51.9 mm | 16.5 mm |
| 7 | 54.4 mm | 17.3 mm |
| 8 | 57.0 mm | 18.1 mm |
| 9 | 59.5 mm | 18.9 mm |
| 10 | 62.1 mm | 19.8 mm |
| 11 | 64.6 mm | 20.6 mm |
| 12 | 67.2 mm | 21.4 mm |
Pro Tips for an Accurate Fit
- Time of day: Measure at the end of the day, when fingers are at their largest.
- Temperature: Cold shrinks fingers; warm swells them. Aim for a neutral state.
- Dominant hand: Your dominant hand is often a half-size larger.
- Between sizes: Size up by half — a slightly loose ring is more comfortable than a tight one.
- Wide bands: Bands wider than 6mm sit tighter; go up half a size.
What If I Still Get It Wrong?
Our ring collection is backed by a 30-day return promise, so an exchange is easy. And our team at info@lottedsteam.com will happily help you pick the right fit before you order.
Frequently Asked Questions
Do sizes differ between fingers? Yes — your ring finger is often a different size than your index or middle finger.
Can rings be resized? Some solid styles can; many fashion and plated designs cannot. Ask us first.