LOCKEDCAGE

Interactive Tool

Chastity Cage Size Calculator

Get precise cage size recommendations in 3 simple steps. Our interactive calculator guides you through proper measurement technique and suggests cages that match your dimensions.

Why Proper Sizing Matters

Choosing the right chastity cage size is the single most important factor in your comfort and safety. A poorly fitted cage can cause pain, injury, or simply slip off, defeating its purpose entirely.

Unlike clothing where "close enough" often works, chastity devices require precise measurements. The cage length must provide slight compression without crushing. The diameter must prevent full erection while allowing healthy blood flow. The base ring is most critical: too tight restricts circulation, too loose allows escape.

Our calculator removes the guesswork. Follow the step-by-step measurement guide below to find your perfect fit in under 5 minutes.

1
Length
2
Girth
3
Ring

Flaccid Penis Length

Measure from the base to the tip while completely flaccid. Press the ruler gently against the pubic bone.

Ruler measurement illustration
3.00"

3.00"

76mm

Measure at room temperature when fully relaxed. Cold environments cause shrinkage that could lead to a cage that's too small.

Detailed Measurement Guide

Before You Start

  • Measure at room temperature (65-75°F). Cold shrinks tissue and leads to undersizing.
  • Be completely flaccid. Wait 30+ minutes after any arousal.
  • Use a rigid ruler for length, flexible tape for circumference.
  • Measure twice to confirm accuracy.

Ring Sizing Is Critical

The base ring is the foundation of the entire device. It sits behind the testicles and must be sized perfectly:

Too tight: Causes pain, restricted blood flow, swelling, numbness, and potential injury. If you cannot fit one finger between the ring and your skin, it is too tight.
Too loose: The cage will slip off during erection attempts or physical activity. The ring should stay in place without sliding over the testicles.

Need more detailed instructions with visual guides?

Read Full Measurement Guide