The condom size calculator turns girth into a starting nominal width and a nearby trial range. You can optionally enter length for a regular, long, or extra-long coverage hint, while the fit preference slightly changes the width estimate.
“Nominal width” is the labeled width of a condom measured flat, usually shown in millimeters on packaging or a product specification. It is not body diameter and it is not a complete brand-specific size chart.
Use the result as a shopping and comparison starting point, not as medical advice, a contraception guarantee, or a brand recommendation.
For brand, material, thickness, shape, stock, or full product comparisons, follow the manufacturer’s packaging and product information rather than relying on one calculator output.
Girth is the primary input. Use a flexible tape or paper strip around one complete circumference at the measurement point and record the result; do not enter diameter or flat width. The component accepts millimeters, centimeters, and inches, then converts internally to millimeters.
Girth drives the nominal-width estimate; length is optional and only adds regular, long, or extra-long coverage guidance.
No. Nominal width is the condom measured flat, while diameter is a cross-section estimate obtained by dividing girth by pi.
A flexible tape or paper strip is commonly wrapped gently around the thickest part and measured as one complete circumference; follow the product or professional guidance available to you.
Material, thickness, shape, lubrication, and manufacturing tolerances affect stretch and feel; nominal width is not a complete product specification.
No. It is a starting estimate based on a fixed width list and fit preference; check the package and actual fit.
根據周長、長度和貼合偏好，估算更實用的保險套尺寸。可取得推薦公稱寬度、可嘗試範圍與基礎貼合建議。