Ring Size Guide

Sizing rings can be a little tricky. If your knuckle is bigger than the base of your finger, try taking two measurements—one at the knuckle and one at the base—and choose a size that falls in between. You want a ring that goes on easily but still fits securely

US Ring Size Inner Diameter (mm)
2 13.3
2.5 13.7
3 14.1
3.5 14.5
4 14.9
4.5 15.3
5 15.7
5.5 16.1
6 16.5
6.5 16.9
7 17.3
7.5 17.7
8 18.1
8.5 18.5
9 19
9.5 19.4
10 19.8
Ring Size Guide

Your Easy Guide to Finding the Perfect Ring Size

Finding the right ring size is key for both comfort and security. A well-fitting ring should be easy to slide on but offer a slight resistance when you take it off.

  • If your knuckle is noticeably thicker than the base of your finger, it's best to measure both areas and choose a size that falls between the two measurements.

Method 1: The Existing Ring Cheat Sheet

If you already own a ring that fits the intended finger perfectly, this is the easiest method!

  • Select Your Sample: Grab the ring that already fits you just right.
  • Measure the Inside: Use a ruler or caliper to measure the inner diameter of the ring in millimeters (mm).
  • Check the Chart: Match that measurement to the corresponding size on a standard ring sizing chart.

Method 2: The Paper Strip Technique (Circumference)

No existing ring? No problem! A strip of paper works just as well.

  • Prep Your Strip: Cut a very thin strip of paper (it should be about the width of the ring you plan to buy).
  • Wrap It Up: Wrap the paper snugly—but not tightly—around the base of your finger.
  • Make Your Mark: Mark the exact point where the paper strip overlaps.
  • Measure the Length: Unroll the strip and measure its length in millimeters (mm). This is your finger circumference.
  • Calculate the Diameter (Optional): If you need the diameter, divide your circumference measurement by $\pi$ (approximately $3.14$).Formula: Circumference $\div 3.14$ = Diameter

Pro Tips for an Accurate Fit

Timing and the style of the ring can affect the final fit. Keep these tips in mind!

  • Best Time to Measure: Measure at the end of the day. Your fingers are usually slightly swollen and at their largest then.
  • Temperature Check: Avoid measuring when your hands are cold—your fingers shrink in cooler temperatures.
  • Width Matters:Wide Bands tend to feel tighter, so you might need to go up half a size.Thin Bands tend to feel a little looser.
  • When in Doubt: If your measurement falls exactly between two sizes, always choose the larger size for comfort.

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