Analysis

Common Chastity Cage Sizes

Based on 1,045 self-reported device fits (across three measurements) extracted from thousands of real male chastity discussions — the base ring diameter, cage internal diameter, and cage length that people report fitting themselves for.

Data last updated: August 2026 · checked monthly for new reports.

1,045

measurements

811

community posts

dimensions tracked

Key findings

The median reported base ring is 45.0 mm (1.77″), the median cage length 60.0 mm (2.36″), and the median internal diameter 35.0 mm (1.38″). 83.9% of base-ring fits fall within 40–55 mm, so ring sizing is comparatively predictable. Cage length is the outlier: only 63.6% of lengths cluster within 35–80 mm, against 83.9% of base rings — length is where fit varies most (median — a more honest “average” here, since a few extreme reports would distort a mean).

These figures describe reported device fits across the dataset. They are not a recommendation that any particular size will be safe or comfortable for you.

Base Ring Inner Diameter

n = 565 · median 45.0 mm (1.77″) · range 30.0–75.0 mm

83.9% of base-ring reports fall within 40–55 mm — base-ring sizing is comparatively predictable across wearers.

Size bucket	Reports	Share of sample
30–35 mm	18	3.2%
35–40 mm	46	8.1%
40–45 mm	174	30.8%
45–50 mm	181	32.0%
50–55 mm	119	21.1%
55–60 mm	12	2.1%
60–65 mm	11	1.9%
65–70 mm	0	0.0%
70–75 mm	4	0.7%

Cage Internal Diameter

n = 200 · median 35.0 mm (1.38″) · range 25.0–50.5 mm

84.0% fall within 30–45 mm. It is the least-reported metric (n = 200, versus 565 for the base ring), because fewer posts state internal diameter.

Size bucket	Reports	Share of sample
25–30 mm	20	10.0%
30–35 mm	65	32.5%
35–40 mm	82	41.0%
40–45 mm	21	10.5%
45–50 mm	10	5.0%
50–55 mm	2	1.0%

Cage Length

n = 280 · median 60.0 mm (2.36″) · range 20.0–150.0 mm

Cage length spreads widest: reports run 20.0–150.0 mm, and 74.6% fall outside the modal 50–65 mm bucket — length is where fit varies most between people.

Size bucket	Reports	Share of sample
20–35 mm	28	10.0%
35–50 mm	57	20.4%
50–65 mm	71	25.4%
65–80 mm	50	17.9%
80–95 mm	31	11.1%
95–110 mm	30	10.7%
110–125 mm	10	3.6%
125–140 mm	0	0.0%
140–155 mm	3	1.1%
155–170 mm	0	0.0%
170–180 mm	0	0.0%

How this data is collected

The sizes are extracted from real male chastity community posts and comments. An AI process reads each discussion and records only self-reported device fit — the base ring, cage diameter, and cage length a person says they personally wear. Body measurements, relative gaps (“5 mm too long”), and catalogue size labels (“size 0 ring”) are excluded, and values outside plausible physical ranges are dropped. All measurements are normalised to millimetres, and the data is refreshed monthly as new discussions are added.

Each qualifying post or comment that states a measurement counts once for that metric, so the sample size differs by metric — 565 base-ring, 200 internal-diameter, and 280 length reports (posts rarely state all three). Values are kept only within plausible physical bounds: 30–75 mm for the base ring, 25–55 mm internal diameter, and 20–180 mm length. There is no cross-post deduplication — two people reporting the same size are counted separately.

Read our full methodology →

Chastity cage sizing — frequently asked questions

What is the most common chastity cage base ring size?

The median reported base ring is 45 mm (1.77"). The most frequently reported range is 45–50 mm, with 181 fits (32.0% of the 565 base-ring reports). Base-ring sizes cluster tightly — 83.9% fall within 40–55 mm.

What size chastity cage do most people wear?

The median reported cage length is 60 mm (2.36") and the median internal diameter 35 mm (1.38"). Length varies far more than diameter: 63.6% of reported lengths fall within 35–80 mm, versus 83.9% of base rings within 40–55 mm.

How is this chastity device size data collected?

An AI process extracts self-reported fits from real community posts, normalised to millimetres, with implausible values dropped. Each qualifying post counts once per metric, so the sample size differs by metric — 565 base-ring, 200 internal-diameter, and 280 length reports. See the methodology section above for details.