How to Measure Your Ring Size: A Complete and Accurate Guide

Estimate your ring size by measuring the inside diameter of a round ring that fits the same finger, or by using a ring sizer. String and paper provide an estimate to confirm. For a wide signet ring, a fitting with a similarly wide sizing gauge is preferable.

Once you know your size, discover our models in our guide Men's 925 Sterling Silver Rings — 50 Models for All Styles. And to choose the right metal, consult our guide Why Choose 925 Sterling Silver Jewelry.

Understanding Ring Sizes

The European System (France)

In France, ring size corresponds to the inside circumference of the ring in millimeters. A size 60 ring has an inside circumference of 60 mm, which is an inside diameter of approximately 19.1 mm.

Conversion Chart

Method 1: String or Ribbon (The Easiest)

Materials

• A piece of string, thin cord, or a strip of paper
• A pen
• A ruler

Steps

1. Wrap the string around the finger to be measured
2. Mark the point where it overlaps with the pen
3. Unwrap and measure the length in mm with the ruler
4. This number = your ring size

Example: If the string measures 60 mm → your size is 60.

Method 2: Measuring an Existing Ring

By Inside Diameter

1. Place the ring flat on a piece of paper
2. Measure the inside diameter in mm (from inner edge to inner edge)
3. Multiply by π (3.14159) to get the circumference
4. Compare the result with the chart and the sizes listed on the product page; do not automatically round to an even number

Example: Diameter 19.1 mm × 3.14 = 60 mm → size 60.

Method 3: The Online Ring Sizer

Some websites offer printable ring sizers. Be careful: the printing scale must be 100% (no automatic scaling). Always check with a ruler before use.

Why Precision Really Matters

A well-fitting ring passes over the knuckle with slight resistance, sits comfortably at the base of the finger and does not slide off on its own. If your measurements fall between sizes, have them checked with a ring sizer before ordering.

Important Tips

When to Measure?

• At the end of the day: Fingers are slightly swollen — this is the most realistic size for daily wear
• Avoid in the morning: Fingers are thinner upon waking
• Avoid cold weather: Cold shrinks fingers
• Avoid intense heat: Heat swells them

When in Doubt

• Repeat the measurement at a normal temperature and at different times if the results vary.
• For a wide ring, check the fit with a wide sizing gauge: there is no universal one-size adjustment.
• Resizing depends on the design, stones and construction; do not assume it is possible before buying.

By Finger

Each finger has its own size. To find out which finger to choose for your ring, consult our guide: Which Finger to Wear Your Ring On — Symbolism and Conventions.

There is no universal size for each finger. Measure the actual finger and hand on which you will wear the ring: a measurement from the other hand may differ.

Gifting a Ring: How to Know the Size Without Asking

• Borrow an existing ring: Discreetly measure it using the diameter method
• Observe their usual rings: Which finger? What width?
• Ask a close friend or family member: Trustworthy friend or family
• Choose an adjustable ring: Ideal for avoiding sizing issues
• Opt for a pendant or earrings: No sizing problems — discover our 925 sterling silver necklace collection

Our Rings Available by Size

At Vindicta, our men's rings are available in a wide range of sizes. Each piece is certified 925 sterling silver. Some flagship models:

• Square Black Onyx Ring — signet ring, worn on the pinky or ring finger
• Tiger's Eye Ring — worn on the ring finger or index finger
• Red Carnelian Ring — worn on the index finger

Our Complementary Guides

• Men's 925 Sterling Silver Rings — 50 Models
• Men's Signet Ring — History, Symbolism, and How to Wear It
• Men's Black Onyx Rings
• Men's Tiger's Eye Rings
• Which Finger to Wear Your Ring On
• Complete Guide to Natural Stones in Jewelry

Discover our complete collection of men's 925 sterling silver rings.