Country Guide

Ring Sizes in New Zealand

Guide to UK ring sizing, Maori traditions, pounamu greenstone rings, and international conversions

Published: February 24, 2026 Reading time: 10 minutes

Ring Sizing System in New Zealand

New Zealand, like Australia and the United Kingdom, uses the UK letter-based ring sizing system. This system designates ring sizes using letters from H through Z, with each letter representing a specific size increment. The UK system is based on the circumference of the ring, which is then converted to a letter designation. Understanding this system is essential for anyone purchasing rings in New Zealand or from New Zealand jewelers.

The UK letter system has been in use for over a century and remains the standard across all New Zealand jewelry retailers, both local shops and online establishments. When you purchase a ring in New Zealand, it will be sized according to this letter system, making it consistent across the entire country and compatible with jewelry purchased from other Commonwealth nations.

Maori Jewelry Heritage and Ring Traditions

New Zealand's jewelry heritage is deeply intertwined with Maori culture and traditions. Maori artisans have created stunning jewelry for centuries, and their craftsmanship remains a vital part of New Zealand's identity. Maori rings often carry spiritual and cultural significance, with designs that reflect ancestral heritage and personal identity.

Maori jewelry traditions emphasize the connection between the wearer and the material, particularly when pounamu (New Zealand jade) is used. Many Maori families have their own unique design elements and patterns that are passed down through generations. When commissioning a Maori-designed ring, you're participating in a living cultural tradition that honors both ancestral practices and contemporary artistic expression.

Pounamu and Greenstone Rings

Pounamu, commonly known as New Zealand greenstone, is a type of jade that is native to New Zealand and holds profound significance in Maori culture. This beautiful stone ranges in color from pale translucent green to deep forest green, and it is prized for its durability and spiritual properties. Pounamu rings are among the most popular and meaningful pieces of jewelry in New Zealand.

According to Maori tradition, pounamu is believed to carry protective qualities and spiritual energy. Gifts of pounamu rings are often given to mark important life events—birthdays, engagements, marriages, or achievements. The stone is said to bring good fortune and protect the wearer from harm. Many Maori families consider pounamu heirlooms, passing them down as treasured family artifacts.

Pounamu rings are expertly carved and polished by New Zealand artisans who understand the stone's properties and cultural significance. The stone is available in various designs, from simple polished bands to intricately carved rings featuring traditional Maori motifs. Whether you choose a contemporary design or a traditional pattern, a pounamu ring connects you to New Zealand's rich cultural heritage.

Understanding UK Ring Sizing

The UK ring sizing system uses letters to designate different sizes. The system begins at size A and continues through the alphabet, with each subsequent letter representing an increase of approximately 1.25mm in circumference. Common sizes range from H (small) through Z (large), with most adults wearing sizes between M and U.

The UK system is based on the ring's circumference rather than diameter, which differs from the EU system. However, once you know your UK size, it remains constant across all Commonwealth countries and the United Kingdom. Many New Zealand jewelers provide size comparison charts to help customers convert between UK and other international systems.

UK to US Ring Size Conversion Chart

UK Size Circumference (mm) US Size
I 50.8mm 5
J 52.1mm 5.75
K 53.3mm 6.5
L 54.6mm 7.25
M 55.9mm 8
N 57.2mm 8.75
O 58.4mm 9.5
P 59.7mm 10.25
Q 61.0mm 11
R 62.2mm 11.75

UK to EU Ring Size Conversion

New Zealand and Australia use UK sizing, while continental Europe uses EU numerical sizing. Converting between these systems requires understanding that UK sizes are based on circumference while EU sizes are based on diameter. Generally, UK size H is approximately EU size 13, UK size M is approximately EU size 18, and UK size U is approximately EU size 26. For precise conversions, consult conversion charts or use sizing tools designed for this purpose.

UK to Japanese Ring Size Conversion

Japanese ring sizes differ from both UK and US systems. Japan uses a numerical system similar to EU sizing in some respects but with its own designations. UK size M is approximately Japanese size 18, UK size O is approximately Japanese size 20, and UK size Q is approximately Japanese size 22. Japanese jewelers can assist with conversions if needed.

Purchasing Rings in New Zealand

When shopping for rings in New Zealand, you'll find a wide variety of styles ranging from traditional Maori designs to contemporary pieces. Local jewelers are knowledgeable about UK sizing and can help you find your perfect fit. Many New Zealand jewelers specialize in pounamu rings and can create custom pieces that reflect your personal style and cultural preferences.

For online purchases from New Zealand retailers, ensure they provide detailed sizing information and have a clear return or exchange policy. Reputable New Zealand jewelry shops will include size conversion charts for international customers and offer professional customer service. When ordering, verify your UK size by measuring an existing ring that fits well or by consulting a sizing tool.

If you're ordering from outside New Zealand, remember that New Zealand uses UK sizing. When converting to US or EU sizes, use our US to UK ring size converter or US vs EU ring sizes comparison to ensure accurate sizing.

Measuring Your Ring Size

To determine your UK ring size, you can measure an existing ring that fits well using a ring sizing gauge, or visit a local jeweler for professional sizing. Alternatively, you can measure the inside diameter of a well-fitting ring and use a conversion chart to find the corresponding UK size. The guide to measuring ring size with phone provides helpful techniques for accurate measurement at home.

Frequently Asked Questions About Ring Sizing in New Zealand

What ring sizing system does New Zealand use?

New Zealand uses the UK letter-based ring sizing system (H through Z), the same system used in the United Kingdom and Australia. This system is based on ring circumference and is the standard across all New Zealand jewelry retailers.

What makes pounamu rings special?

Pounamu (New Zealand greenstone) is a type of jade native to New Zealand with profound cultural significance in Maori traditions. It is believed to have protective and spiritual qualities. Pounamu rings are sought after for their beauty, durability, and cultural meaning, making them popular choices for special occasions and heirlooms.

How do I convert UK ring sizes to US sizes?

UK and US sizing systems are different, with UK using letters and US using numbers. Generally, UK size M is approximately US size 8, UK size N is approximately US size 8.75, and UK size O is approximately US size 9.5. Use our US to UK ring size converter for precise conversions.

Can I order a ring from a New Zealand jeweler if I don't know my UK size?

Yes, you can order from New Zealand jewelers even without knowing your UK size. First, determine your size by measuring an existing ring, visiting a local jeweler, or using sizing tools. Most New Zealand jewelers can convert between sizing systems, and many provide detailed sizing guides online.

Are Maori-designed rings only made from pounamu?

While pounamu is traditionally significant in Maori jewelry, Maori-designed rings are now created from various materials including gold, silver, and other precious metals. Many contemporary Maori artisans blend traditional design elements with modern materials and techniques, creating diverse and meaningful pieces.

Resources for Ring Sizing Information

For additional information about ring sizing, explore these helpful resources:

Conclusion

New Zealand's ring sizing system, based on the UK letter system, provides clarity and consistency for purchasing rings both within the country and internationally. The rich Maori jewelry heritage, particularly the tradition of pounamu rings, adds a unique cultural dimension to ring selection in New Zealand. Whether you're choosing a traditional pounamu ring that honors ancestral heritage or a contemporary design that reflects modern sensibilities, understanding UK sizing ensures you'll find a ring that fits perfectly. By using the conversion resources available and consulting with knowledgeable New Zealand jewelers, you can make informed decisions when purchasing rings, whether locally or from international retailers. The combination of traditional craftsmanship and contemporary design makes New Zealand an exciting destination for ring shopping and a meaningful place to source jewelry with cultural significance.

Ready to find your ring size?

Free to download. No tools needed. Works on any iPhone.

Download Ring Sizer on the App Store