Ring Sizes

Shopping for wedding and engagement rings involves many decisions—price, style, materials—but one key detail is often overlooked: will the ring fit?

Ring sizing can feel unnecessarily complicated. A U.S. size 8 is an 18 in Germany, a 16 in Japan, and a Q in the U.K. To make matters worse, many jewelers don’t carry a full range of sizes, especially plus sizes (U.S. 10 and above), making it hard to try on the perfect fit.

At Altura Jewelry, we take the guesswork out by offering the full range of U.S. standard sizes, so you can find your perfect fit without the hassle.

Finding Your Ring Size at Home

Discovering your perfect ring size is easier than you think! Here are a few simple methods you can try at home to ensure a comfortable and accurate fit.

1. Download Our Ring Sizer Tool

  • Download our free sizing tool to print at home.
  • Place your ring on the circles provided or cut out the guide to wrap around your finger.
  • Follow the instructions closely to ensure accuracy.

2. Measure a Ring You Already Own

  • If you have a ring that fits perfectly, measure the diameter (straight across the center, inside edge to inside edge) with a ruler.
  • Use the ring size conversion chart below to find your size based on the measurement.
    Tip: Make sure the ring is round and not bent for accurate measurements.

3. Use a String or Strip of Paper

  • Take a piece of string or thin strip of paper and wrap it around the base of your finger.
  • Mark where the string or paper overlaps, then measure it with a ruler in millimeters.
  • Use the ring size chart below to match the measurement to your size.
    Pro Tip: Measure your finger at the end of the day when it’s slightly larger to get the most accurate size.

U.S. vs. International Ring Sizes

Ring sizes can vary depending on where you are in the world.

  • U.S. and Canada: Ring sizes are measured on a numerical scale, often including half and quarter sizes (e.g., size 6, 6.5).
  • UK and Australia: Sizes are labeled alphabetically (e.g., size L, M, N).
  • Europe: Sizes are based on the inner circumference of the ring in millimeters (e.g., 52 mm).
  • Asia: Japan uses a simple numerical scale, while China measures ring sizes using inner diameter in millimeters.

Helpful Tip: If you’re shopping internationally, always refer to a ring size conversion chart to ensure a perfect fit!

Historical Methods of Ring Sizing

Throughout history, determining ring size was often a mix of artistry and ingenuity.

  • Ancient Egypt and Rome: Rings were crafted by artisans who relied on simple hand measurements or loops of cord wrapped around fingers. Custom sizing wasn’t standardized, and rings were often resized with tools or fire.
  • Medieval Period: Jewelers used wax molds or carved wood to size rings. These methods weren’t precise, so resizing was common after crafting.
  • 19th Century: Sizing tools like ring mandrels (a tapered sizing rod) and metal gauges became more widespread, helping to standardize ring sizing.

Today, advanced tools and sizing charts have made the process much easier, allowing for precision without sacrificing craftsmanship.

Tips for Getting the Perfect Fit

  • Measure your finger when it’s warm—cold fingers can shrink slightly.
  • If you’re between sizes, opt for the larger size for comfort.
  • Wider bands tend to fit more snugly, so consider sizing up slightly if choosing a thicker style.

Ring Sizes 3.5 - 7.5

Finger size isn’t as consistent as you might think—it can change slightly from day to day and significantly with the seasons. Factors like warm weather, salty meals, pregnancy, or arthritis can all cause your fingers to swell or shrink. This means the idea of a “perfect fit” is often more flexible than precise.

Even if you measure the exact spot where the ring will sit, you still need to consider other variables, like getting the ring comfortably over your knuckles. Finding the right size is about balance—snug enough to stay put, but comfortable enough to wear every day.

Ring Sizes 8 - 12

Buying an engagement ring can be even trickier when you’re trying to keep it a secret. Even if well-meaning friends or family manage to grab a ring she wears on her right hand, finger sizes can differ between dominant and non-dominant hands—so there’s still some guesswork involved.

But don’t worry! We’re here to help you navigate any ring sizing challenges. Whether you have questions about how a ring should fit, sizing differences, or anything in between, we’ve got you covered.

Ring Sizes 12.5 - 17

Working with a professional jeweler is the most reliable way to find an accurate ring size, but you can easily measure at home with just a pen, string, and ruler. Be sure to measure when your fingers aren’t unusually swollen and aim for the morning or afternoon for the best results. Once you have your measurement, use our ring size chart to find the perfect fit. When in doubt, it’s usually safer to size up rather than down.

No Green Fingers, Just Lasting Quality

Our rings are crafted from premium materials like gold and platinum, ensuring long-lasting durability and a perfect fit. Unlike cheap costume jewelry, you won’t have to worry about rusting or discoloration—just a beautiful, lasting piece that stands the test of time.

Ethically Sourced, Conflict-Free Materials

We are committed to ethical practices, this is why we never use blood diamonds. Instead, we use high-quality ethically sourced stones so you can shop with a clear conscience. You can feel good knowing your ring is beautiful, ethical, and conflict-free.

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