
Ring size is an important consideration when purchasing jewellery, especially when it comes to finding a comfortable and secure fit. In Australia, ring sizing follows an alphabetical system, typically ranging from F to Z, with each letter corresponding to a specific diameter in millimetres that matches an individual's finger width. While there are no distinct sizing systems for different genders, men's ring sizes are often larger, and women's sizes tend to fall within the small (I-M), medium (N-Q), or large (R-U) categories. This article aims to explore the specifics of ring sizing in Australia, providing insights into the process of determining one's ring size and ensuring a comfortable and personalised fit.
| Characteristics | Values |
|---|---|
| Ring size system | Australia uses an alphabetical system (Wheat Sheaf) |
| Ring sizes | Typically from F through to Z |
| Standard women's ring sizes | Small: I-M, Medium: N-Q, Large: R-U |
| Ring resizing | Possible at an additional cost, non-refundable |
| Ring size measurement | Each ring size letter corresponds to a particular diameter in millimetres, which matches your finger width |
| Ring size measurement tips | Measure at different times during the day, the ring should be snug but able to slide over the knuckle |
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What You'll Learn

Ring sizing systems
Ring sizing is a complex process, with many different systems in use around the world. The International Organization for Standardization (ISO) has developed a standardised way of measuring the inside circumference of rings in millimetres, but even countries that use this system then convert the millimetre measurement into their own sizing systems. For example, in the Netherlands, Germany, and sometimes Argentina, the ring size is defined by the diameter of the ring measured in millimetres, while in Italy, Spain, and Switzerland, ring sizes are specified as the circumference minus 40 mm.
In the United States, Canada, and Mexico, ring sizes are specified using a numerical scale with 1/4 step divisions, where whole sizes differ by 0.032 inches (0.81 mm) of internal diameter. This is equivalent to 0.1005 inches (2.55 mm) of internal circumference. In India, Japan, and China, ring sizes are also specified using a numerical scale, but the whole sizes do not have a linear correlation with diameter or circumference.
In Ireland, the United Kingdom, and Australia, ring sizes are specified using an alphabetical scale with half sizes. In Australia, a size 6 ring in the US would be an L 1/2. This alphabetical scale was originally based on ring inside diameter in steps of 1/64 inch (0.40 mm), but in 1987, it was updated to the metric system so that one alphabetical size division equals 1.25 mm of circumferential length. For example, a ring size C has a circumference of 40 mm.
It is important to note that ring size can vary depending on the time of day and the temperature, as fingers can expand and shrink. It is recommended to measure your finger size at the end of the day and to measure the specific finger you intend to wear the ring on, as each hand and finger may differ slightly in size.
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Ring size conversion
There are several methods you can use to determine your ring size. One common method is to use a ring sizer, which you can order online or pick up at a jewellery store. You can also print a chart from an online source and compare your ring to standard sizes. Simply slide the sizer onto your finger—it should fit snugly but still move over your knuckle. It is recommended to measure your finger at the end of the day, as fingers tend to be smaller in the morning and larger in the evening due to natural swelling. Additionally, it is important to measure at room temperature, as cold fingers shrink and warm fingers expand.
Another method is to use a ring you already own as a guide. You can compare it to a printed chart or an online size guide to determine your size. You can also use a piece of string to measure your finger and then compare it to a size chart. However, it is important to note that string can stretch, so be careful not to pull it too tight when measuring.
If you are between sizes, it is generally recommended to size up. This is especially important if you have large knuckles, as you want the ring to slide on easily but still fit securely. Wider bands can also feel tighter, so you might need to go up half a size for a thicker ring.
It is always best to get measured by a professional jeweller to ensure an accurate size. They can help you determine the most comfortable fit and make any necessary adjustments. Additionally, some stores offer complimentary resizing within a specific timeframe, so you can be confident in your purchase.
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$17.29

Getting professionally sized
While there are several methods to measure your ring size at home, getting your ring size professionally measured is the best way to ensure a perfect fit.
Many jewellery stores will help you get your ring size for free. This is the best way to ensure an accurate measurement, as it can be tricky to measure your own ring size accurately at home.
When getting sized, it's important to remember that your ring finger may be larger or smaller on one hand than the other, so make sure you measure the finger you intend to wear the ring on. It's also worth noting that your fingers can fluctuate in size throughout the day, so it's best to get measured at the end of the day, when your fingers are likely to be at their largest.
If you're unable to visit a jewellery store in person, many jewellers also offer virtual shopping appointments to help you determine your ring size.
Resizing
If you've ordered a ring that doesn't fit, many jewellers offer resizing services. Resizing a ring typically involves adding or removing small amounts of metal, which may make the ring slightly thicker or thinner. Some rings, such as those with intricate gemstone settings, cannot be resized due to their design. In these cases, you may be able to exchange the ring for another in the correct size.
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Ordering a free ring sizer
For example, Blue Nile offers a free plastic ring sizer that they can mail to you. This ring sizer allows you to find the right size by sliding your finger into it until you find a comfortable fit. They also offer a printable ring sizer and online ring sizer as alternative options. Similarly, Simple & Dainty provides a free reusable plastic ring sizer that measures sizes from 1 to 17. Their ring sizer is lightweight and easy to use, as confirmed by customer reviews.
If you're specifically interested in men's wedding bands, Gentlebands offers a free ring sizer as well. Their website includes clear instructions on how to use the ring sizer to find your size. They recommend circling your finger with the sizer, tightening it slightly, and then checking if the size indicated by the arrow feels comfortable. Additionally, they suggest considering your personal preferences, such as whether you want the ring to be worn day and night or spun around.
It's worth noting that some jewellers, like KAVALRI, may offer free ring sizers for men's ring sizes only. In such cases, they usually provide the option to visit their physical store or stockist locations to get professionally sized for any type of ring. When ordering a free ring sizer, keep in mind that your fingers may vary in size throughout the day, so it's best to measure at different times and choose a size that accommodates your finger at its largest.
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Ring resizing
A ring size 6 in Australia is equivalent to a US ring size 5.3.
Now, ring resizing is a common practice, and many jewellers offer this service. However, there are some limitations and considerations to keep in mind. Firstly, it is recommended to get your finger professionally measured by a jeweller to ensure an accurate size. You can also order a free ring sizer to determine your size at home, but it is always advisable to validate this with a jeweller. It is worth noting that your finger size can vary throughout the day, so it is best to measure at the end of the day when your fingers are likely to be at their largest.
When it comes to resizing, the type of metal and complexity of the ring setting will impact the cost and feasibility. For example, resizing a ring with channel-set stones is possible, but it may require additional stone tightening to ensure the stones do not become loose. Resizing stainless steel rings with inlay is generally not recommended as it can permanently alter the ring's design. Additionally, significant size increases or decreases may affect the shape of the ring and the tension on any stone settings. In such cases, it may be advisable to have the ring remade or opt for an adjustable ring band.
The cost of ring resizing can vary depending on the metal type and the number of sizes the ring needs to be adjusted. Simple resizing can start from as little as \$40, while more complex adjustments, such as those involving multiple diamonds, can be more expensive. It is always recommended to consult with a reputable jeweller to understand the specific requirements and costs for resizing your ring.
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Frequently asked questions
A size 6 ring in Australia is considered small for women and would be equivalent to a size 5.5 in the US.
You can find out your ring size in Australia by visiting a local jeweller and getting professionally sized. You can also order a free ring sizer online or use a ring sizing chart to measure your finger at home.
The Australian ring sizing system uses an alphabetical scale, typically ranging from F to Z, with each letter corresponding to a specific diameter in millimetres.
Yes, your fingers may expand and shrink throughout the day, so it is recommended to measure your finger size at the end of the day when it is likely to be at its largest.
If you order the wrong ring size online, some jewellers in Australia offer resizing services for a nominal fee. However, resized items may be non-refundable.











































