Rings have become a growing men's fashion trend in jewelry, but many are hesitant to hop on the trend due to the confusion around ring sizes. Don't let shopping for men's rings intimidate you, especially if you've never worn a ring before. Ring size accuracy is essential when choosing the perfect ring for yourself or your loved ones — a ring will slide off easily (or get stuck) if it's not the right size, so it's best to be sure before ordering one.
If you're wondering, "what ring size am I?" we're here to help. Below you'll find every method to measure your ring size at home — including a free printable ring sizer you can download and cut out right now — plus a full size conversion chart.
Download the free printable ring sizer (PDF) → Print at 100% scale (no "fit to page"), cut along the lines, and you'll have your size in under two minutes.
How to Measure Ring Size at Home
There are several reliable ways to find your ring size without visiting a jeweler. Pick whichever method you have supplies for.
Method 1: Use Our Printable Ring Sizer
The most convenient option. Print the PDF sizer above at 100% scale, cut out the strip, wrap it around the base of the finger you'll wear the ring on, and read the size where the strip overlaps. Because it's pre-printed with size markings, there's no ruler or math involved.
Method 2: Paper or String Method
The most accurate way to know your ring size if you don't have a printer handy is to measure the circumference of your finger directly.
- Cut a strip of paper or a piece of non-stretchy string.
- Wrap it around the base of your finger (not too tight, but comfortably fit).
- Mark the point where it completes the circle.
- Measure the length with a ruler, in millimeters if possible.
- Compare the measurement to the ring size chart below.
Method 3: Ring Sizer Tool
Ring sizers work like a belt. Push the end of the sizer through the buckle to make a ring shape, slide it over the desired finger, tighten the buckle, and check the size. You don't want the ring too tight, and you need to make sure it can fit back over your knuckle. When in doubt, size up.
Method 4: Measure an Existing Ring
If you already own a ring that fits well — yours or a gift recipient's — you can measure that instead. Men's wedding bands and other engravable rings are measured from the inside, so use a ruler or measuring tape to measure the circumference of the inside of the ring in millimeters and compare it to the chart below.
Method 5: Measure Your Ring Size With Your Phone
No printer or ring sizer on hand? Several free apps and browser tools use your phone's camera and a reference object (like a credit card) to estimate finger circumference. These are convenient for a rough estimate, but they're less precise than the paper/string or printable-sizer methods — treat the result as a starting point and confirm with a physical measurement before ordering, especially for a ring you can't easily exchange.
Ring Size Chart
| US Ring Size | Diameter (inches) | Diameter (mm) | Circumference (mm) |
|---|---|---|---|
| 6 | 0.649" | 16.5mm | 51.8mm |
| 6.5 | 0.665" | 16.9mm | 53.1mm |
| 7 | 0.681" | 17.3mm | 54.4mm |
| 7.5 | 0.697" | 17.7mm | 55.6mm |
| 8 | 0.713" | 18.1mm | 56.9mm |
| 8.5 | 0.729" | 18.5mm | 58.2mm |
| 9 | 0.745" | 18.9mm | 59.5mm |
| 9.5 | 0.762" | 19.3mm | 60.8mm |
| 10 | 0.778" | 19.8mm | 62.0mm |
| 10.5 | 0.794" | 20.2mm | 63.3mm |
| 11 | 0.810" | 20.6mm | 64.6mm |
| 11.5 | 0.826" | 21.0mm | 65.9mm |
| 12 | 0.842" | 21.4mm | 67.2mm |
| 13 | 0.874" | 22.2mm | 69.7mm |
| 14 | 0.906" | 23.0mm | 72.3mm |
Measure in centimeters instead? Just divide your mm measurement by 10 (for example, 62.1mm = 6.21cm for a US size 10) and match it against the chart above.
Tips and Tricks
Your finger size can change from day to day, and thicker ring styles fit more snugly than thinner ones. Keep these tips in mind:
- Measure your fingers at the end of the day when they're at their largest.
- Cold fingers can measure smaller, so warm up your hands first.
- Alcohol and salty foods can cause fingers to swell — avoid both before measuring.
- Thicker rings won't fit the same as thinner rings at the same "size." Pay attention to the band's millimeter width and size up if needed for wider styles like our Brushed Beveled Edge Band
Frequently Asked Questions
What ring size is 3 inches? A 3-inch circumference (about 76mm) is larger than any standard US ring size chart typically lists — that's closer to a US size 16-17, which is uncommon for off-the-shelf rings. Double check your measurement; most people confuse a diameter measurement with a circumference measurement, which will throw off the result significantly.
How big is a size 7 ring? A US size 7 has an inner diameter of about 0.681 inches (17.3mm) and a circumference of about 54.4mm.
Can my phone measure my ring size? Yes, with varying accuracy. Camera-based sizing apps can give you a quick estimate, but for a ring you're planning to keep, confirm with the paper/string method or our printable sizer before ordering.
Do ring sizes run the same across brands? US ring sizes are standardized by diameter/circumference, so a size 10 should measure the same everywhere. What changes between brands is how a specific style fits — wider bands and rings with raised details (like a signet or bezel) can feel tighter than a thin band in the same labeled size.
A Ring for Every Finger
If you don't get it right the first time, that's okay — you can always exchange for a different size. Some rings suit certain fingers or occasions better than others. A few of our best-selling styles to consider once you've got your size locked in:
- Signet Ring – Gold
- Signet Ring – Silver
- Signet Ring – Black
- Wilshire Ring – Gold
- Wilshire Ring – Silver
- Cuban Link Ring – Gold
- Iced Out Cuban Link Ring – Gold
- Beveled Onyx Signet Ring – Gold
- Brushed Beveled Edge Wedding Band – 7mm
Browse the full lineup on our Men's Best-Selling Rings collection page. Whether you want a black tungsten ring for the gym or a classy Cuban link ring for nights out, our team can point you in the right direction.
