Seating and interiors
Set seat, backrest, and clearance targets using maximum seat length.
Measurement
Maximum Seat Length
Maximum Seat Length for fit, clearance, and sizing decisions across populations.
Seated maximum seat length dimension for chairs, vehicle interiors, and workstation packaging.
Male–female median gap
Difference between median predictions for the 25yo US cohort.
4.5 cm (10%)
Median male is 4.5 cm larger than median female
Design accommodation range
5th to 95th percentile span for the 25yo US cohort (cm).
Male
- Low
- 44.9 cm
- Median
- 48.4 cm
- High
- 50.6 cm
Female
- Low
- 41.2 cm
- Median
- 43.9 cm
- High
- 47.0 cm
Male vs female distribution
Predicted values at key percentiles for 25-year-olds in the United States (cm).
Related torso measurements
Median values for nearby torso peers in the 25yo US cohort (cm). Male and female medians as paired bars when both are available.
- Shoulder Breadth BideltoidMale 45.7Female 39.5cm
- Trunk LengthMale 46.1Female 42.7cm
- Vertical Grip Reach SittingMale 47.0Female 43.7cm
- Maximum Seat LengthCurrentMale 48.4Female 43.9cm
- Eye To Table DistanceMale 49.2Female 45.7cm
- Nape Height SittingMale 52.8Female 49.3cm
Typical applications
Workstation layout
Package desks, consoles, and vehicles for seated populations.
Accommodation bands
Choose percentile ranges before physical mockups lock the design.
API example
Request a median prediction for a 25-year-old man in the United States. Replace the API key with yours from the dashboard.
Coverage at a glance
176 countries
Population coverage for cross-market work
1–88
Age span for developmental and adult cohorts
1–99
Percentile range for accommodation studies
mm, cm, in
Output units for your design system
Start with a free API key
Request maximum seat length for the ages, percentiles, genders, and countries you design for. Start with a free API key.