Analysis

Common Chastity Cage Sizes

Based on 1,097 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: September 2026 · checked monthly for new reports.

1,097

measurements

855

community posts

dimensions tracked

Key findings

The median reported base ring is 45.0 mm (1.77″), the median cage length 60.2 mm (2.37″), 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 62.4% 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 = 595 · 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	19	3.2%
35–40 mm	49	8.2%
40–45 mm	180	30.3%
45–50 mm	198	33.3%
50–55 mm	121	20.3%
55–60 mm	12	2.0%
60–65 mm	12	2.0%
65–70 mm	0	0.0%
70–75 mm	4	0.7%

Cage Internal Diameter

n = 212 · 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 = 212, versus 595 for the base ring), because fewer posts state internal diameter.

Size bucket	Reports	Share of sample
25–30 mm	21	9.9%
30–35 mm	67	31.6%
35–40 mm	89	42.0%
40–45 mm	22	10.4%
45–50 mm	11	5.2%
50–55 mm	2	0.9%

Cage Length

n = 290 · median 60.2 mm (2.37″) · range 20.0–150.0 mm

Cage length spreads widest: reports run 20.0–150.0 mm, and 75.2% 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	9.7%
35–50 mm	58	20.0%
50–65 mm	72	24.8%
65–80 mm	51	17.6%
80–95 mm	35	12.1%
95–110 mm	33	11.4%
110–125 mm	10	3.4%
125–140 mm	0	0.0%
140–155 mm	3	1.0%
155–170 mm	0	0.0%
170–180 mm	0	0.0%

Download the data

Download the aggregated size distributions as a single CSV — one row per size bucket, with the report count and share for all three measurements. Aggregated bins only; no individual posts or source text.

↓ Download CSV

License: CC BY 4.0 — free to use with attribution to ChasteGPT.

Cite this dataset

ChasteGPT (2026). Community-Reported Chastity Device Fit Measurements [Dataset]. chastegpt.com/analysis/common-sizes

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 — 595 base-ring, 212 internal-diameter, and 290 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.

In a manual audit of a random sample of 50 extracted measurements (September 2026), 97.9% were verified accurate against their original source posts. 2 of 50 were ambiguous and excluded from the accuracy figure.

Read our full methodology →

Limitations

This dataset describes self-reported fits from people active in online chastity communities — a population that skews toward enthusiasts comfortable discussing measurements publicly, and may not represent all device wearers. Measurements are extracted from free-text posts by an AI pipeline (97.9% verified accuracy in our most recent manual audit) and reflect what people report wearing, not clinical fittings. Sample sizes differ by metric because posts rarely state all three measurements. Counts are deduplicated per post, not per person, so prolific posters may be represented more than once across the corpus.

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 198 fits (33.3% of the 595 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 60.2 mm (2.37") and the median internal diameter 35 mm (1.38"). Length varies far more than diameter: 62.4% 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 — 595 base-ring, 212 internal-diameter, and 290 length reports. See the methodology section above for details.