How to Measure Your Ring Size at Home: Your Complete Guide
Finding the perfect ring begins with knowing your correct ring size. Whether you're gifting something meaningful or choosing a piece for yourself, an accurate measurement ensures a comfortable, confident fit. The good news: you can measure your ring size at home in just minutes.
At Juwels & Co, we created an easy way to get precise results using a ring you already own — no tools, printers, or plastic sizers required.
NEW: Measure Your Ring Size Online Using an Existing Ring
We’re excited to introduce the Juwels & Co Ring Sizer Tool, a simple digital method that measures your ring size directly on your phone, laptop, or tablet screen.
This tool uses:
- A ring you already own
- Your screen
- A standard credit/debit/ID card for calibration
It creates a true-to-size guide so you can find your ring size online accurately — from US, EU, and UK ring size conversions to exact millimeter diameters.
👉 Use the tool here: https://juwels.co/pages/ring-sizer
This is the most accurate at-home method and the easiest way to measure ring size without a ring sizer.
Other Ways to Measure Your Ring Size at Home
1. Measure Your Finger With Paper or String
This classic method helps you measure your ring size without tools.
You’ll need:
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A thin strip of paper
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A pen
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A ruler
How to measure:
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Wrap the paper around the base of your finger.
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Mark where it overlaps.
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Measure the length in millimeters.
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Match it to our ring size chart.
2. Measure an Existing Ring With a Ruler
If you prefer a manual method, you can measure the inner diameter of a ring you already own.
Steps:
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Place your ring on a ruler.
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Measure the inner opening in mm.
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Compare to a ring size conversion chart.
This works well, but requires precision — our online tool removes the guesswork.

Which Method Is Most Accurate?
While all these options work, the Juwels & Co Ring Sizer Tool delivers the most accurate, consistent results. It uses real-time diameter matching and automatically converts measurements into US, EU, and UK ring sizes.
👉 Try the ring sizer here: https://juwels.co/pages/ring-sizer
Ring Size Guide: US to International Ring Size Conversion
All of our rings are crafted in standard US ring sizes, including .25, half, and whole sizes. Use the ring size conversion chart below to convert US ring sizes to international sizes and determine your ideal fit based on finger circumference. Engagement rings, wedding bands, and fashion rings all follow the same size format.































