BigDickData
The money question

Condoms that actually fit

Drugstore condom sizes are a guess. Fit is set by girth, not length — find your exact nominal width in mm and the brands that actually make it.

Find your fit by girth

Tap your erect girth. Each page gives the exact nominal width to buy and the condoms that make it.

Not sure of your girth? Size yourself in 10 seconds →

Buy by the number, not the label

Get condoms in your exact width

MyONE makes 50+ custom widths from 45–64 mm — the only way to buy your actual fit instead of "regular" or "large".

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Condom fit FAQ

What condom size do I need? +

Measure your erect girth (circumference), then halve it in millimetres to get the nominal (lay-flat) width. Average girth (11.7 cm) maps to ~53 mm — a standard condom. Above ~14 cm you want 60 mm+.

Does length affect condom size? +

Barely. Standard condoms unroll to ~7.5 in and stretch well beyond. Girth is what decides whether a condom grips, slips, or splits — so fit is sized by circumference.

What's the biggest condom? +

Off the shelf, ParaGard/Trojan Magnum XL and Durex XXL run ~57–64 mm nominal width. Titan 3XL reaches ~69 mm, and MyONE makes custom widths up to 64 mm by the millimetre.

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