Humanform

Measurement

Eye To Seat

25 years · United States

Eye To Seat for fit, clearance, and sizing decisions across populations.

Seated eye to seat dimension for chairs, vehicle interiors, and workstation packaging.

Male–female median gap

Difference between median predictions for the 25yo US cohort.

6.3 cm (8%)

Median male is 6.3 cm larger than median female

Design accommodation range

5th to 95th percentile span for the 25yo US cohort (cm).

Male

Low
75.6 cm
Median
80.5 cm
High
84.4 cm

Female

Low
70.1 cm
Median
74.2 cm
High
78.3 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.

Typical applications

Seating and interiors

Set seat, backrest, and clearance targets using eye to seat.

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 eye to seat for the ages, percentiles, genders, and countries you design for. Start with a free API key.