How to Find Your Ring Size: The Complete Australian Guide

Finding the perfect ring size is one of the most important steps in buying or commissioning a piece of jewellery — and one of the most commonly overlooked. Whether you're shopping for yourself or secretly sizing up a partner for a surprise proposal, getting it right from the start saves time, stress, and the cost of resizing.

At Ryan James Jewellery, we've guided hundreds of Australians through this process. Here's everything you need to know.

Why Ring Size Matters

A ring that's too tight is uncomfortable and can be difficult to remove. One that's too loose risks slipping off — especially in cold weather when fingers naturally shrink. For custom-designed pieces with intricate settings or eternity bands set with stones all the way around, resizing can be complex or even impossible without compromising the design. Getting the size right the first time is always the best outcome.

Australian Ring Sizes Explained

Australia uses an alphabetical sizing system (the same as the UK and New Zealand), ranging from A to Z+. This differs from the US numerical system, so if you've seen a size referenced online from an American retailer, you'll need to convert it. As a general guide, a common women's size in Australia is around L–P, while men's sizes typically fall between R–W — but everyone is different, and the only reliable measure is your own finger.

How to Measure Your Ring Size at Home

There are a few methods you can use:

The String or Paper Method

1. Cut a thin strip of paper or use a piece of string.
2. Wrap it snugly around the base of the finger you intend to wear the ring on.
3. Mark where the paper or string overlaps.
4. Measure the length in millimetres — this is your finger's circumference.
5. Use a ring size chart to convert the measurement to an Australian letter size.

Measure an Existing Ring

If you already own a ring that fits well on the correct finger, measure its internal diameter in millimetres and cross-reference with a sizing chart. This is also a great method for secretly finding a partner's size.

Visit Us In-Studio

The most accurate method is always a professional fitting. We use precision ring gauges at our studio and can measure both fingers and existing rings. We also account for knuckle size — because a ring needs to fit over the knuckle as well as sit comfortably at the base of the finger.

Tips for Accurate Sizing

• Time of day matters: Fingers are slightly larger in the afternoon and evening than in the morning.
• Temperature affects size: Cold weather causes fingers to shrink; heat causes them to swell. Measure at a comfortable room temperature.
• Dominant hand is larger: Your dominant hand's fingers are typically slightly larger. Make sure you measure the correct hand.
• Wide bands fit tighter: If your ring has a wide band (over 6mm), you may need to go up half a size for comfort.

Secretly Finding Your Partner's Ring Size

Planning a surprise proposal? You're not alone — this is one of the most common questions we receive. We've put together a dedicated guide with clever, discreet methods to find your partner's ring size without giving the surprise away.

Read our guide: How to Secretly Find Your Partner's Ring Size →

Ring Sizing for Custom Pieces

When you commission a custom design through Ryan James Jewellery, we take sizing very seriously. During your design consultation, we'll confirm your size using professional gauges and factor in the specific band width and style of your piece. For engagement rings and wedding bands — where the stakes are highest — we always recommend an in-person fitting before we begin crafting.

Explore our Diamond Solitaire Ring and other signature pieces, or browse The Signature Collection to find a style that inspires your custom design.

What If My Ring Doesn't Fit?

If a ring you've received doesn't fit perfectly, don't panic. Most rings can be resized by our skilled master jeweller. However, some designs — particularly full eternity bands or rings with intricate engraving — have limitations. We always discuss resizing considerations with clients before beginning any custom work, so there are no surprises.

Ready to Find Your Perfect Fit?

Whether you're ready to commission a custom piece or simply want to confirm your size, we're here to help. Book a consultation with Ryan and our team — we'll guide you through every step of the process, from sizing to the final design.

You can also visit our full Ring Sizing Guide for additional charts and resources.