Why is accurate measuring important for a cock cage?

Accurate measuring is essential because a cock cage that is too tight can restrict blood flow and cause pain or injury, while one that is too loose may slip, chafe, or fail to provide effective chastity. Correct measurements help you choose a cage that fits snugly, feels secure, and can be worn comfortably for the intended duration.

What measurements do I need for a cock cage?

You need three main measurements: flaccid penis length (from the base to the tip), penis girth or circumference (to determine the internal diameter of the cage), and base ring circumference (around the base of the penis and testicles) so you can choose a ring diameter that is secure but not too tight.

How do I measure my flaccid penis length for a cock cage?

To measure flaccid length, stand or sit comfortably and place a ruler or measuring tape along the top of your penis. Measure from the base where it meets your body out to the tip of the glans. Use this length to reference the length table so you can select a cage that closely matches your flaccid length without over-compressing the penis.

How do I measure penis girth for a cock cage?

Wrap a soft measuring tape, strip of paper, or string around the thickest part of your flaccid penis shaft to find the circumference. Mark where it meets, then measure that length to get your girth. Use this circumference with the chart or the diameter formula (Diameter = Circumference ÷ 3.14) to choose an internal cage diameter that feels snug but not restrictive.

How do I calculate the internal diameter of a cock cage from my girth?

To convert girth to internal diameter, divide your penis circumference by 3.14 (pi). For example, a 4.0 inch (101.6 mm) circumference divided by 3.14 gives an internal diameter of about 1.27 inches (32 mm). You can also use the provided circumference-to-diameter table to quickly match your girth to a recommended internal cage diameter.

How do I measure for the base ring size on a cock cage?

To measure for the base ring, wrap a soft measuring tape around the base of your penis and behind your testicles where the ring will sit. Record this circumference, then divide by 3.14 or compare it to the base ring size table on the page. Choose a ring diameter that is snug enough to hold the device in place but loose enough that you can still slip a finger under it and maintain normal circulation.

What if my measurements fall between two cock cage sizes?

If your measurements fall between sizes, it is usually safer to choose the slightly larger internal diameter or base ring to avoid cutting off circulation. For length, many people prefer a cage just a bit shorter than their flaccid length so the penis rests comfortably without extra space that allows partial erections.

How tight should the base ring of a cock cage be?

The base ring should feel secure and supportive without causing sharp pain, numbness, coldness, or colour changes in the penis or scrotum. You should be able to wear it for the intended period without significant discomfort. If you experience tingling, dark discolouration, or intense pressure, the ring is too tight and you should size up or remove it immediately.

How do I use the cock cage size tables to choose the right device?

First, use the flaccid length table to find the closest penis length measurement in inches or millimetres and match it to a cage length. Next, use your girth and the girth-to-diameter table to choose an internal diameter that suits your circumference. Finally, use your base ring circumference with the base ring table to select a ring diameter that will sit comfortably around your penis and testicles.

Is it better to choose a longer or shorter cock cage?

In most cases, a slightly shorter cage than your full flaccid length is more comfortable and effective. A cage that is too long leaves extra space, which can allow partial erections and increase friction. A properly sized cage lets the penis rest gently without significant compression or extra room to grow.

What are warning signs that my cock cage or ring size is wrong?

Warning signs of incorrect sizing include persistent pain, numbness, tingling, coldness, dark or bluish discolouration, swelling that does not go down, or difficulty urinating. If you notice any of these, remove the cage immediately and recheck your measurements. You may need a larger internal diameter, a bigger base ring, or a different cage length.

Can I use my cock cage measurements for different styles and brands?

Yes, once you know your flaccid length, shaft girth, and comfortable base ring diameter, you can use those measurements as a reference across different styles and brands of cock cages. Designs may vary slightly, but your core measurements will still guide you toward a secure, comfortable fit no matter which cage you choose.

​How to Measure for a Cock Cage

How to Measure for a Cock Cage

A Detailed Guide with Tables

Measuring accurately for a cock cage ensures both comfort and effectiveness, whether you’re using it for BDSM play or long-term chastity. Below, you'll find a detailed step-by-step guide along with tables to help you determine the right size based on your measurements. We’ll cover how to measure for length, girth, and the base ring in both millimeters (mm) and inches.

Why Accurate Measurements Matter

Choosing the correct size is essential for comfort. A cock cage that’s too tight can restrict circulation, while one that’s too loose won’t offer the intended restriction. Proper measurements ensure a snug fit without discomfort.

Measurements You Need

Penis Length (Flaccid): For the cage portion that covers your penis.
Penis Girth (Circumference): To choose the internal diameter of the cage.
Base Ring Size: To ensure the ring fits comfortably around both your penis and testicles.

Step-by-Step: How to Measure for a Cock Cage

1. Penis Length (Flaccid)

Measure the length from the base to the tip of your flaccid penis.

Penis Length (inches)	Penis Length (mm)
1.0	25.4
1.1	27.9
1.2	30.5
1.3	33.0
1.4	35.6
1.5	38.1
1.6	40.6
1.7	43.2
1.8	45.7
1.9	48.3
2.0	50.8
2.1	53.3
2.2	55.9
2.3	58.4
2.4	61.0
2.5	63.5

2. Penis Girth (Circumference)

Measure the girth (circumference) of the penis and calculate the internal diameter required for the cock cage. Use the formula

$Diameter = \frac{Circumference}{3.14}$

Diameter=3.14Circumference.

Circumference (inches)	Circumference (mm)	Internal Diameter (inches)	Internal Diameter (mm)
3.0	76.2	0.95	24 mm
3.1	78.7	0.99	25 mm
3.2	81.3	1.02	26 mm
3.3	83.8	1.05	27 mm
3.4	86.4	1.08	28 mm
3.5	88.9	1.11	28 mm
3.6	91.4	1.15	29 mm
3.7	94.0	1.18	30 mm
3.8	96.5	1.21	31 mm
3.9	99.1	1.24	32 mm
4.0	101.6	1.27	32 mm
4.1	104.1	1.31	33 mm
4.2	106.7	1.34	34 mm
4.3	109.2	1.37	35 mm
4.4	111.8	1.40	36 mm
4.5	114.3	1.43	36 mm

3. Base Ring Size

The base ring wraps around both the penis and testicles. Measure the circumference at the base and calculate the diameter.

Base Ring Circumference (inches)	Base Ring Circumference (mm)	Base Ring Diameter (inches)	Base Ring Diameter (mm)
4.0	101.6	1.27	32 mm
4.1	104.1	1.31	33 mm
4.2	106.7	1.34	34 mm
4.3	109.2	1.37	35 mm
4.4	111.8	1.40	36 mm
4.5	114.3	1.43	36 mm
4.6	116.8	1.47	37 mm
4.7	119.4	1.50	38 mm
4.8	121.9	1.53	39 mm
4.9	124.5	1.56	40 mm
5.0	127.0	1.59	40 mm
5.1	129.5	1.62	41 mm
5.2	132.1	1.66	42 mm
5.3	134.6	1.69	43 mm
5.4	137.2	1.72	44 mm
5.5	139.7	1.75	44 mm

Try Out These Popular Cock Cages Here.

Accurately measuring your penis length, girth, and base ring size will ensure a comfortable and secure fit for your cock cage. Follow the tables and measurement tips above to choose the best fit for your needs.

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How to Measure for a Cock Cage