Early sizing studies
Use waist to crotch length to set fit targets before physical prototyping.
Measurement
Waist To Crotch Length for fit, clearance, and sizing decisions across populations.
Linear waist to crotch length for product fit, reach envelopes, and human factors studies.
Difference between median predictions for the 25yo US cohort.
0.6 cm (2%)
Median male is 0.6 cm larger than median female
5th to 95th percentile span for the 25yo US cohort (cm).
Male
Female
Predicted values at key percentiles for 25-year-olds in the United States (cm).
Median values for nearby torso peers in the 25yo US cohort (cm). Male and female medians as paired bars when both are available.
Use waist to crotch length to set fit targets before physical prototyping.
Choose percentile ranges for the people you need to include.
Compare waist to crotch length across countries and cohorts from one catalog.
Request a median prediction for a 25-year-old man in the United States. Replace the API key with yours from the dashboard.
Population coverage for cross-market work
Age span for developmental and adult cohorts
Percentile range for accommodation studies
Output units for your design system
Request waist to crotch length for the ages, percentiles, genders, and countries you design for. Start with a free API key.