Finding the perfect ring starts with one important step — knowing your ring size. A ring that’s too tight can be uncomfortable, while one that’s too loose might slip off. Whether you’re shopping for yourself or planning a surprise gift, measuring your ring size at home is easier than you think.
In this guide, we’ll walk you through different methods to measure your ring finger size — from professional tools to simple DIY techniques — so you can get the perfect fit every time.
Why Accurate Sizing Matters
A proper fit ensures:
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Comfort for daily wear
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Longevity of your jewelry
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No risk of losing your ring
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A polished, professional look
💡 Tip: Your finger size can change slightly depending on the time of day, temperature, or even salt intake. Measure at the end of the day, when your fingers are at their largest.
Method 1: Using a Ring Sizer Tool (Most Accurate)
If you want a precise measurement, a ring sizing tool is your best option. These are often plastic or metal bands marked with standard US ring sizes.
Steps:
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Slide the sizer onto your finger.
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Adjust until it feels snug but comfortable.
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Read the size marking on the tool.
📌 Pro tip: Many jewelry stores, including Brad Levi Jewelry, will size your finger for free.
Method 2: Measuring with a String or Strip of Paper
A simple and effective method if you don’t have a sizer.
Steps:
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Cut a thin strip of paper or take a piece of string.
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Wrap it around the base of your finger.
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Mark where the ends meet.
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Lay it flat and measure the length in millimeters.
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Compare your measurement to a ring size chart.
Example Conversion:
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54.4 mm = US size 7
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57.0 mm = US size 8
Method 3: Measuring a Ring You Already Own
If you already have a ring that fits well:
Steps:
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Place the ring on a ruler.
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Measure the inside diameter in millimeters.
- Finally Use our size chart to convert diameter to ring size.
Brad Levi Jewelry Ring Size Chart
| US Size | Inside Diameter (mm) | Circumference (mm) |
|---|---|---|
| 5 | 15.7 | 49.3 |
| 6 | 16.5 | 51.9 |
| 7 | 17.3 | 54.4 |
| 8 | 18.1 | 57.0 |
| 9 | 18.9 | 59.5 |
| 10 | 19.8 | 62.1 |
| 11 | 20.6 | 64.6 |
| 12 | 21.4 | 67.2 |
Method 4: Printable Ring Sizer
Many jewelry websites (including ours) offer printable ring sizers.
Steps:
- Download and print the sizer at 100% scale (check with a ruler).
- Use the printed circles to match an existing ring.
Final Tips for Ring Sizing
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Measure the exact finger you’ll wear the ring on — sizes differ between hands.
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Avoid measuring when your fingers are cold (they shrink slightly).
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If you’re between sizes, choose the larger size for comfort.
Need Help?
At Brad Levi Jewelry, we’re happy to help for free and guide you to the perfect fit.
📍 Visit us or shop online at www.BradLeviJewelry.com
📞 Call or text: (407) 881-6421