India to AU Ring Size Conversion – Indian to Australian Ring Size Chart

India to AU Ring Size Conversion

Complete Indian to Australian ring size conversion chart — India sizes 4 to 27 with AU letter sizes, US, EU, diameter mm, circumference, instant two-way calculator and expert tips

🇮🇳 India Sizes 4–27 🇦🇺 AU Sizes F–Z+ 🔄 Two-Way Calculator 🇺🇸 US · 🇪🇺 EU Included 📏 Diameter & Circumference mm 💍 Women & Men Sizes

🇮🇳

4–27

India Ring
Size Range

🇦🇺

F–Z+

AU Ring
Size Range

👩

12–14

Most Common
India Women's Size

👨

18–22

Most Common
India Men's Size

India uses a numerical ring sizing system (numbers 1–27, most commonly 4–27) based on the same inner circumference standard as China, Japan, South America, Turkey, and Israel. This is fundamentally different from Australia's letter-based system (F–Z+), which matches the UK and New Zealand standard. The conversion is straightforward — both systems are based on inner circumference in millimetres, so India size 14 = AU N (54.4mm inner circumference), which is also the most common women's ring size in Australia.

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India ↔ AU Ring Size Calculator

Instantly convert between Indian and Australian ring sizes in both directions

Converted Ring Size

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Complete India to AU Ring Size Conversion Chart

🇮🇳 India Size	🇦🇺 AU / UK / NZ	🇺🇸 US / Canada	🇪🇺 EU / ISO	Diameter (mm)	Circumference (mm)	Typical Wearer
4	F	3	44.1	14.0 mm	44.1 mm	Child / Petite
4½	F½	3.25	44.6	14.2 mm	44.6 mm	Child / Petite
5	G	3.5	45.3	14.4 mm	45.3 mm	Child / Petite
6	G½	3.75	45.9	14.6 mm	45.9 mm	Child / Petite
7	H	4	46.6	14.8 mm	46.6 mm	Small
—	H½	4.25	47.1	15.0 mm	47.1 mm	Small
8	I	4.5	47.8	15.2 mm	47.8 mm	Small Women
—	I½	4.75	48.4	15.4 mm	48.4 mm	Small Women
9	J	5	49.1	15.6 mm	49.1 mm	Small Women
—	J½	5.25	49.8	15.8 mm	49.8 mm	Small Women
10	K	5.5	50.4	16.0 mm	50.4 mm	Women
—	K½	5.75	51.1	16.2 mm	51.1 mm	Women
11	L	6	51.7	16.4 mm	51.7 mm	Women
12	L½	6.25	52.4	16.6 mm	52.4 mm	Women
13	M	6.5	53.0	16.8 mm	53.0 mm	Popular ♀
—	M½	6.75	53.7	17.0 mm	53.7 mm	Popular ♀
14 ⭐	N	7	54.3	17.2 mm	54.3 mm	Most Common ♀
—	N½	7.25	55.0	17.4 mm	55.0 mm	Popular ♀
15	O	7.5	55.7	17.6 mm	55.7 mm	Popular ♀
—	O½	7.75	56.3	17.8 mm	56.3 mm	Popular ♀
16	P	8	57.0	18.0 mm	57.0 mm	Women / Men
—	P½	8.25	57.6	18.2 mm	57.6 mm	Women / Men
17	Q	8.5	58.3	18.4 mm	58.3 mm	Women / Men
—	Q½	8.75	58.9	18.6 mm	58.9 mm	Men
18	R	9	59.6	18.8 mm	59.6 mm	Men
—	R½	9.25	60.2	19.0 mm	60.2 mm	Men
19	S	9.5	60.9	19.2 mm	60.9 mm	Men
—	S½	9.75	61.6	19.4 mm	61.6 mm	Men
20 ⭐	T	10	62.2	19.6 mm	62.2 mm	Most Common ♂
—	T½	10.25	62.9	19.8 mm	62.9 mm	Men
21	U	10.5	63.5	20.0 mm	63.5 mm	Men
22	V	11	64.8	20.4 mm	64.8 mm	Large Men
23	V½	11.25	65.5	20.7 mm	65.5 mm	Large Men
24	W	11.5	66.2	20.8 mm	66.2 mm	Large Men
25	X	12	67.5	21.2 mm	67.5 mm	XL Men
26	Z	13	70.1	22.0 mm	70.1 mm	XL Men
27	Z+	13.25+	70.9+	22.3 mm	70.9 mm	XL Men

⭐ India 14 = AU N = US 7 — most common women's size

⭐ India 20 = AU T = US 10 — most common men's size

🔄 India sizing = same system as China & Japan

🇦🇺 AU = UK = NZ — identical letter system

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Quick Reference — Most Common India to AU Sizes

🇮🇳 India	🇦🇺 AU	🇺🇸 US	Circ. mm	Diam. mm	Typical Wearer
10	K	5.5	50.4 mm	16.0 mm	Women
11	L	6	51.7 mm	16.4 mm	Women
12	L½	6.25	52.4 mm	16.6 mm	Women
13	M	6.5	53.0 mm	16.8 mm	Popular ♀
14 ⭐	N	7	54.3 mm	17.2 mm	Most Common ♀
15	O	7.5	55.7 mm	17.6 mm	Popular ♀
16	P	8	57.0 mm	18.0 mm	Women / Men
17	Q	8.5	58.3 mm	18.4 mm	Men
18	R	9	59.6 mm	18.8 mm	Men
19	S	9.5	60.9 mm	19.2 mm	Men
20 ⭐	T	10	62.2 mm	19.6 mm	Most Common ♂
21	U	10.5	63.5 mm	20.0 mm	Men
22	V	11	64.8 mm	20.4 mm	Large Men

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Understanding India's Ring Sizing System

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Numerical System

India uses whole numbers (4–27). Each number corresponds to a specific inner circumference in mm. Unlike AU/UK letters, there are no half-sizes in the standard Indian system.

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Shared with Asia

The Indian numbering system is the same as China, Japan, Turkey, Israel, and South America. If you know your Japanese or Chinese ring size, it is identical to your Indian size.

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Based on Circumference

Indian ring sizes are based on inner circumference in mm. India size 14 = 54mm inner circumference = AU N. Each full India size equals approximately 1.6mm increase in circumference.

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AU Uses Letters

Australia, UK, and NZ use letters F–Z+. AU also has half sizes (F½, G½, etc.) between each whole letter, giving finer sizing than the Indian whole-number system.

India ↔ AU Conversion Formulas

India Size → Inner Circumference (mm)

Circumference (mm) ≈ (India size × 1.6) + 37.7

Example: India 14 → (14 × 1.6) + 37.7 = 60.1 mm. Note: use the chart for exact values — this formula is an approximation. Exact values may vary by ±0.5 mm.

Quick Lookup Shortcut (EU = Circumference)

EU ring size = inner circumference in mm → match to AU letter

Example: India 14 = EU 54.3 = inner circumference 54.3 mm = AU N. Use the EU column as a circumference bridge between India and AU — no maths needed.

India → US Size (quick shortcut)

US size ≈ (India size ÷ 2) − 0.5

Example: India 14 ÷ 2 = 7 − 0.5 = 6.5 → US 7 (close enough). This is a rough shortcut only. Use the chart for exact conversion, especially for sizes above India 18.

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How to Use This Conversion Chart

Find your India size in the left column

Locate your Indian ring size number in the leftmost column of the full chart above. India sizes run from 4 (smallest) to 27 (largest). Most adult women fall between India 10–16 and most adult men between India 17–24.

Read across to find your AU size

Read across the same row to find your equivalent Australian letter size in the second column. For example, India 14 = AU N. If your India size falls between two whole numbers, your AU size will be the half-size between the two corresponding AU letters.

Note: India sizes skip — AU half-sizes exist between each India size

India uses only whole numbers while AU includes half sizes (e.g., N½). If your ring was sized in India as "14" but feels slightly loose, you may be AU N½ rather than AU N. When between sizes, always size up (choose the larger AU half-size).

Verify using the circumference measurement

For the most reliable conversion, measure the inner circumference of your existing Indian ring in mm (wrap a string around it, measure the length). Match that circumference to the "Circumference (mm)" column in the chart — this bypasses any India-to-AU numbering inconsistencies.

Use the two-way calculator for instant results

The calculator above accepts an India size number and instantly returns the AU letter size plus US, EU, diameter, and circumference details. It also works in reverse — enter an AU letter to get the equivalent India size.

⚠️ Important: Ring size conversions between different countries can vary by ±0.5 mm depending on the jeweller and the specific measuring standard used. For expensive or bespoke rings, always have your AU ring size confirmed by a professional Australian jeweller before ordering. Free sizing is available at all major AU jewellers including Michael Hill, Shiels, and Moi Moi.

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Tips for Converting India to AU Ring Sizes

📐Measure the ring itself — don't just rely on a number — ring sizes from different Indian jewellers can occasionally vary by half a size due to differences in mandrel tools. The most reliable method is to measure the inner diameter of your Indian ring in mm, then match it to the Diameter column of the chart above.
🔼Always round UP in Australia — if your India size falls between two AU sizes in the chart, choose the larger Australian size. A ring that is slightly large is comfortable and can be resized by an AU jeweller; a ring that is too small is painful and risky to wear.
🌡️India sizing is typically done in cooler conditions — many Indian jewellers size rings in air-conditioned shops, which means fingers are slightly smaller at the time of sizing. In Australia's warm climate, your finger may be slightly larger. If your Indian ring fits perfectly in India but feels snug in Australia's heat, consider going half a size up.
📏India and Japan sizes are identical — if you also know your Japanese ring size, it is the same number as your Indian size. India size 14 = Japan size 14 = AU N. This makes Japan-to-AU conversion charts equally useful for Indian sizes.
💍Wide bands require half a size up — traditional Indian wedding bands and Kadas (broad bangles converted to rings) are often 5–8mm wide or wider. For wide bands, size half a size larger than the chart conversion suggests, as wide bands sit higher on the finger and feel tighter than narrow rings of the same measured size.
🏪Indian jewellers in Australia can resize Indian rings — many Indian jewellers operating in Australian cities (Sydney, Melbourne, Brisbane) are familiar with both sizing systems and can re-measure and resize Indian gold rings to AU sizes. This is particularly useful for inherited or gifted Indian jewellery that needs to be converted and adjusted.
🔁Online purchases: use circumference mm not just size number — when buying from Indian jewellery websites and specifying size for Australian delivery, always provide the inner circumference in mm (from the chart) in addition to the India size number. This prevents confusion between Indian and other Asian sizing systems that may use similar numbers differently.

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Frequently Asked Questions

What is India size 14 in Australian ring size? ▾

India size 14 is equivalent to Australian size N — the most common women's ring size in Australia. It corresponds to US size 7, EU size 54, with an inner diameter of 17.2 mm and inner circumference of 54.3 mm. India size 14 is also the most common women's ring size in India, making AU N the direct equivalent for the majority of Indian women.

What is India size 20 in Australian ring size? ▾

India size 20 is equivalent to Australian size T — the most common men's ring size in Australia. It corresponds to US size 10, EU size 62.2, with an inner diameter of 19.6 mm and inner circumference of 62.2 mm. This is the standard conversion for most Indian men looking to buy rings in Australia.

Is Indian ring sizing the same as Japanese ring sizing? ▾

Yes — Indian and Japanese ring sizes use the identical numerical system. India size 14 = Japan size 14 = AU N. Both systems are also shared by China, South America, Turkey, and Israel. This means any Japan-to-AU or China-to-AU conversion chart is directly applicable to Indian ring sizes as well.

How do I convert my Indian ring size to Australian without a chart? ▾

The simplest bridge is via EU size: EU ring size = inner circumference in mm. Calculate the approximate circumference using the formula Circumference ≈ (India size × 1.6) + 37.7 mm, then match that circumference number to the chart's EU column to read your AU letter. For India size 14: (14 × 1.6) + 37.7 ≈ 60 mm… but use the chart for exact values — the calculator on this page does all of this automatically.

My Indian ring is size 12 — what AU size should I order? ▾

India size 12 converts to AU L½ (US 6.25, EU 52.4, inner diameter 16.6 mm, circumference 52.4 mm). If you are unsure whether you need AU L½ or AU M, always go with AU M (the larger size). A slightly large ring is comfortable and can be sized down by an Australian jeweller for $50–$150 AUD.

Why doesn't every India size have a direct AU letter equivalent? ▾

India uses whole numbers only, while the Australian system uses both full letters and half sizes (e.g., N and N½). Each India size steps by approximately 1.6 mm in circumference, while each AU half-size steps by approximately 0.65 mm. This means India whole numbers align exactly with some AU sizes but fall between two AU half-sizes for others. When this happens, choose the larger AU size for comfort.

Can I get an Indian ring resized by an Australian jeweller? ▾

Yes — most Australian jewellers can resize Indian gold rings (22-carat, 18-carat), provided the ring design allows it. Rings with stones set all around the band, heavily engraved rings, or very wide Kada-style bands may not be resizable. Standard resize cost at an Australian jeweller is typically $50–$150 AUD for one to two size changes. Call ahead to confirm if the jeweller works with high-carat Indian gold.

What is AU ring size N in Indian ring size? ▾

Australian ring size N converts to India size 14. AU N has an inner diameter of 17.2 mm and inner circumference of 54.3 mm. It is US size 7 and EU size 54. India 14 is the most common women's ring size in both India and Australia.

What are the most common Indian women's and men's ring sizes in AU equivalent? ▾

The most common Indian women's ring sizes are India 12–15, which correspond to AU L½ through AU O (US 6.25 to 7.5). The single most common size is India 14 = AU N. For men, the most common Indian sizes are India 18–22, corresponding to AU R through AU V (US 9 to 11). The single most common men's size is India 20 = AU T.