Ring Size Guide: Tips to Measure at Home
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Because the perfect ring should feel like it was made for you—because it was.
A well-fitting ring is one of life’s quiet luxuries. When it hugs your finger just right—never slipping, never squeezing—it becomes an extension of you. But finding your perfect ring size doesn’t require a trip to the jeweler. With a few simple techniques, you can measure right at home.
Whether you're shopping for yourself or planning a surprise, this guide will walk you through how to confidently measure your ring size—and we’ve even included a downloadable tool to make it easier than ever.
Why Ring Size Matters (and Why It's Worth Getting Right)
A ring should feel natural from the moment you slide it on. Too tight and it’s uncomfortable. Too loose and it becomes a worry. The right size ensures: • Everyday comfort
• Secure fit (no unexpected slips)
• Longevity of the piece (less need for resizing)
• Confidence when buying online
The Best Time to Measure Your Finger
Your finger size fluctuates throughout the day. For the most accurate results, it’s best to measure:
• In the late afternoon or early evening, when fingers are at their largest
• In normal room temperature
• A few different times, just to be sure
3 Easy Ways to Measure Your Ring Size at Home
• Use Our Free Printable Ring Sizer
We’ve created a downloadable Ring Size Guide just for you.
It includes both: • A cut-out paper sizer to wrap around your finger
• A chart for measuring an existing ring by placing it over printed circles
Tip: Be sure to print it at 100% scale (no resizing) for accurate sizing.
• The String or Paper Strip Method
If you prefer a manual option:
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Cut a thin strip of paper or non-stretchy string
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Wrap it around the base of your finger snugly but comfortably
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Mark where it overlaps
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Measure the length in millimeters
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Use our printable chart or an online size table to find your match
• Measure a Ring You Already Own
This method works beautifully if you have a ring that fits the same finger:
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Lay the ring over the printed circles in our size guide
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Match the inner edge of the ring to the nearest circle
Between Sizes? Here's What to Do
• If you’re between two sizes, size up—especially for wider bands
• Rings worn on the dominant hand often require a slightly larger size
• Knuckle size matters: if you have large knuckles, ensure the ring can slide over comfortably
U.S. vs. International Sizing
If you're ordering locally, U.S. sizing is likely your go-to. But here's a quick note on global sizing for the curious:
• U.S. sizes: Numbered (e.g., 5.5, 6, 6.5)
• U.K.: Alphabetical (e.g., M, N, O)
• EU: Millimeter-based (e.g., 52 = 52mm circumference)
• Asia: Uses unique country-specific scales
Our downloadable guide sticks with U.S. sizing for simplicity and ease.
Still Not Sure? We’re Here to Help
If you’re ordering a custom piece or gifting a surprise, don’t hesitate to reach out. Many jewelers—including us—are happy to help with guidance or even send you a physical sizing tool if needed.
The Bottom Line
Measuring your ring size at home is simple, accurate, and empowering. With the right tools (and a little patience), you’ll be able to select your next piece with full confidence—no resizing required.
Because when it fits just right, it becomes more than jewelry.
It becomes yours.
Written by Mia Laurent
Content Editor, Altura Jewelry Blog