How to Measure Your Ring Size at Home Like a Pro
Shopping for a ring is one of the most exciting parts of any jewelry journey—but there’s one important step you don’t want to overlook: getting the right ring size. Whether you're buying an engagement ring, wedding band, or custom piece, knowing how to measure your ring size is key to comfort, style, and a perfect fit.
At Vermont Gem Lab, we help clients design rings that last a lifetime—and that means getting the sizing just right from the start. In this guide, you’ll learn easy ways to measure your ring size at home, how sizing works, and what to do if you’re in between sizes.
Why Getting the Right Ring Size Matters
A ring that’s too tight can be uncomfortable—or impossible to wear. A ring that’s too loose could fall off and be lost forever. When you’re investing in a custom piece, accuracy is everything.
Whether it’s a surprise proposal, a wedding band, or a milestone anniversary gift, we’ll help you get the fit just right—so the moment it slips on, it feels like it was made just for you (because it was).
4 Easy Ways to Measure Your Ring Size at Home
Let’s get hands-on! Here are the top at-home methods for measuring your ring size.
1. Use a Printable Ring Sizer
Many jewelers, including us, offer printable ring sizer templates you can download. Just follow these steps:
- Print the ring sizer at 100% scale
- Cut out the ring sizer and wrap it around the base of your finger
- Slide the end through the slit and pull until snug
- Read the corresponding size
Pro Tip: Make sure your printer settings are correct to avoid inaccurate scaling.
2. Use a Ring You Already Own
If you already have a ring that fits the intended finger well:
- Place the ring on a ruler or caliper to measure the inside diameter
- Match that measurement with a standard sizing chart
- Alternatively, place it on a printable ring chart and find the closest circle
This method is great for surprise gifts—borrow one of your partner’s rings (just make sure it’s worn on the correct finger!).
3. Use String or Dental Floss
If you don’t have access to a ring sizer, a simple string will do.
- Cut a 6-inch piece of string or floss
- Wrap it around the base of your finger
- Mark where the ends meet
- Lay the string flat and measure the length in millimeters
- Use a ring size chart to convert the circumference into a size
Note: Avoid using stretchy string, which can distort measurements.
4. Buy an Adjustable Ring Sizer
For the most accurate DIY method, consider ordering an inexpensive plastic ring sizer. These adjustable tools work like a zip tie and can be reused again and again.
This is also a great tool to keep if you plan to purchase rings online or gift jewelry frequently.
Ring Size Chart: Diameter & Circumference Guide (U.S. Sizes)
| Ring Size | Diameter (mm) | Circumference (mm) |
|---|---|---|
| 4 | 14.8 | 46.7 |
| 5 | 15.7 | 49.3 |
| 6 | 16.5 | 51.9 |
| 7 | 17.3 | 54.4 |
| 8 | 18.1 | 57.0 |
| 9 | 19.0 | 59.5 |
| 10 | 19.8 | 62.1 |
| 11 | 20.6 | 64.6 |
| 12 | 21.4 | 67.2 |
Need help converting from international ring sizes? Contact us and we’ll help you get the perfect match.
Tips for Getting the Most Accurate Ring Size
- Measure at the right time: Your fingers swell slightly throughout the day. Measure in the evening for the most accurate size.
- Consider the weather: Cold fingers shrink, warm fingers expand.
- Measure multiple times: Double-check for consistency.
- Match band width: Wider bands feel tighter. If you're choosing a thick ring, you might need to size up slightly.
What If You're Between Sizes?
When in doubt, size up! A slightly larger ring can be adjusted with sizing beads or a small silicone insert. It's better to have a ring that's a bit loose than one that's uncomfortably tight.
At Vermont Gem Lab, we offer expert resizing services and walk you through these decisions during our custom design process. You can explore that process in detail here.
How Vermont Gem Lab Helps You Get the Right Fit
Custom rings are our specialty, and getting the fit perfect is part of what we do best. During your custom consultation, we’ll guide you through the sizing process and can provide:
- Ring sizers by mail
- Video consultations to assess size
- In-person sizing (by appointment in Vermont)
- Resizing options for finished pieces
Every custom design begins with a sizing strategy to ensure your ring is as comfortable as it is beautiful.
Real Story: A Perfect Fit for a Secret Proposal
When Brian contacted us at Vermont Gem Lab to design a surprise emerald engagement ring for his partner, he was nervous about getting the size right.
“She doesn’t wear much jewelry, so I had no idea,” he said.
Our team walked him through discreet sizing options. He borrowed a ring from her right hand, measured it with a caliper, and we accounted for finger differences between hands.
The result? A flawless fit on the big day—and a glowing “yes.”
These are the details that make custom jewelry unforgettable.
Need a Professional’s Help?
If DIY sizing isn’t quite cutting it, we’re here for you.
In-Studio Sizing
If you're in or near Vermont, schedule an appointment to visit our studio for professional sizing. We use calibrated tools to ensure accuracy and can size both your finger and any ring you bring in.
Virtual Sizing Assistance
Working remotely? Send us a photo of your hand with a reference item (like a coin), and we’ll guide you through getting a near-exact measurement from home.
We’ve helped hundreds of clients from all over the country get perfectly sized rings—without setting foot into a store.
Ready to Design the Ring of Your Dreams?
Whether you're starting a new chapter with a custom engagement ring or celebrating an anniversary with a personalized piece, the right fit matters.
From sizing to setting, Vermont Gem Lab is your expert partner in crafting jewelry that reflects your life and love.
🌟 Discover our design services at Vermont Gem Lab
🎨 Browse our custom creations in the gallery
💍 Learn more about how we work with you step-by-step in our design process
Final Thoughts: Make Sizing Stress-Free
Measuring your ring size shouldn’t be a guessing game. With a few simple tools and expert support from Vermont Gem Lab, you’ll feel confident every step of the way.
Let’s make sure your ring fits like a dream—because love, commitment, and craftsmanship deserve nothing less.