ATELIER FIT GUIDE · US Ring Size Standard

Ring Size Standard · US 2 - 15

Choosing the right finger size is the core step of an heirloom piece. Sizes here are US-based — international customers size rings in US; inside the Panyu atelier we still work to HKJJA Hong Kong gauge standards, and the cross-reference is listed alongside. Inner circumference 42.5mm to 69.5mm, 27 steps. Use any of the measurement methods below to size precisely.

01straighten

Chaining / Paper cord wrapping method

EASY · At-Home Test

Take a thin thread or a 5mm wide paper strip, wrap it around the base of the finger once, mark the crossing point, and then unwind to measure the length. Repeat 2-3 times and take the average.

Precision±0.5mm error

02radio_button_checked

Ring circumference measurer method

MEDIUM · Recommended

Search Taobao or JD for a ring sizer in US size ($2-5) and try sizes from the smallest up until one sits comfortably. The ring should slide over the knuckle easily without slipping off.

Precision±0.2mm error

03biotech

Panyu Workshop Precise Measurement

PRO · 0 Yuan

The workshop is equipped with a laser inside diameter micrometer, which can measure your sent old ring or band with an accuracy of 0.02mm. If you already have a ring, please directly contact the manager to arrange for measurement shipment.

PrecisionTolerance ±0.02mm

SIZE GAUGE TABLE · Ring Size Comparison

US / Inner Circumference / HK / EU Comparison Chart

Data Source: HKJJA

Millimetres and HK gauge follow HKJJA

US (United States)	Internal circumference (mm)	Internal circumference (inch)	HK (HK)	European standard size (EU)	Note
2	42.5	1.67	5#	41
2.5	44.0	1.73	6#	42
3	44.75	1.76	6.5#	43
3.5	45.5	1.79	7#	44
4	46.25	1.82	7.5#	44
4.5	47.0	1.85	8#	45
5	48.5	1.91	9#	46
5.5	50.0	1.97	10#	47
6	51.5	2.03	11#	49	Hot
6.5	52.5	2.07	12#	51
7	53.5	2.11	13#	52	Hot
7.5	54.5	2.15	14#	53
8	55.5	2.19	15#	55	Hot
8.5	56.5	2.22	16#	56
9	57.5	2.26	17#	57
9.5	58.5	2.30	18#	59
10	59.5	2.34	19#	60
10.5	60.5	2.38	20#	61
11	61.5	2.42	21#	62
11.5	62.5	2.46	22#	63
12	63.5	2.50	23#	64
12.5	64.5	2.54	24#	65
13	65.5	2.58	25#	66
13.5	66.5	2.62	26#	67
14	67.5	2.66	27#	68
14.5	68.5	2.70	28#	69
15	69.5	2.74	29#	70

HK half-size ladder

Hong Kong Half-Size Ladder (0.5 gauge steps)

Data Source: HKJJA

Half steps interpolated between whole gauges

HK gauge	Inner circumference (mm)	Inner circumference (inch)	Equivalent US size
6#	44.0	1.73	2.5
6.5#	44.75	1.76	3
7#	45.5	1.79	3.5
7.5#	46.25	1.82	4
8#	47.0	1.85	4.5
8.5#	47.75	1.88	4.5
9#	48.5	1.91	5
9.5#	49.25	1.94	5
10#	50.0	1.97	5.5
10.5#	50.75	2.00	5.5
11#	51.5	2.03	6
11.5#	52.0	2.05	6
12#	52.5	2.07	6.5
12.5#	53.0	2.09	6.5
13#	53.5	2.11	7
13.5#	54.0	2.13	7
14#	54.5	2.15	7.5
14.5#	55.0	2.17	7.5
15#	55.5	2.19	8
15.5#	56.0	2.20	8
16#	56.5	2.22	8.5
16.5#	57.0	2.24	8.5
17#	57.5	2.26	9
17.5#	58.0	2.28	9
18#	58.5	2.30	9.5
18.5#	59.0	2.32	9.5
19#	59.5	2.34	10
19.5#	60.0	2.36	10
20#	60.5	2.38	10.5
20.5#	61.0	2.40	10.5
21#	61.5	2.42	11
21.5#	62.0	2.44	11
22#	62.5	2.46	11.5
22.5#	63.0	2.48	11.5
23#	63.5	2.50	12
23.5#	64.0	2.52	12
24#	64.5	2.54	12.5
24.5#	65.0	2.56	12.5
25#	65.5	2.58	13
25.5#	66.0	2.60	13
26#	66.5	2.62	13.5
26.5#	67.0	2.64	13.5
27#	67.5	2.66	14
27.5#	68.0	2.68	14
28#	68.5	2.70	14.5
28.5#	69.0	2.72	14.5
29#	69.5	2.74	15

* US 7 (Internal circumference 53.5mm / Guangzhou 13#) For the most common finger ring for Asian women;US 9 (57.5mm / Guangzhou 17#) Garnet is the most common ring choice for Asian men.

Visual Ruler

The ruler covers 42mm - 70mm, one division per millimetre, spanning US 2 - 15 (42.5mm to 69.5mm). It is the simplest but least precise method, so confirm with the paper-strip method as well.

42mm56mm70mm

Frequently Asked Questions (FAQ)

Fingers can change in size with temperature, and the ring size can vary by how much between summer and winter?expand_more

Summer and winter finger circumference can differ by 0.5-1mm. It is recommended to measure at room temperature (20-25°C) and not after intense exercise or in cold water.

Are the finger rings on the left hand and the right hand the same?expand_more

The ring finger on the left hand is usually 0.5-1mm smaller than on the right hand. Please measure your ring finger when purchasing the ring (engagement rings are commonly worn on the left hand).

How to choose when the knuckle is thicker than the base of the finger?expand_more

The ring band should slide smoothly over the knuckle. It is recommended to find a balance between "able to slide over the joint + not easy to fall off." If the knuckle is particularly thick, you may choose a half size larger.

Pregnancy and weight loss period may cause significant changes in ring size, how to cope with it?expand_more

It is recommended to choose an "adjustable ring shank" (such as a tension setting) or to reserve ±1 size for extra allowance. The Panyu workshop also offers lifetime free resizing service.

Are you uncertain about the ring size and would like to place an order first?expand_more

Okay. This workbench adopts a $0 starting plan for simulations. The master will verify the measurement data you provide or the old ring before beginning work.

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