Ergonomic · Furniture · Common
Maximum Seat Length
The maximum length of a seat.
MaximumSeatLength
How to measure
Application
Used in seat design to ensure the seat depth does not exceed the user's thigh length and create pressure behind the knee. This is a workspace measurement, not a body measurement.
Posture
Sit upright on a firm, flat surface with your back against a wall or backrest.
Landmark
Measured horizontally from the back of the seat to the front edge. Compare against your buttock-popliteal length — the seat must not exceed this value.
Tool
Tape measure or rigid ruler.
Common mistake
Treating this as a target seat depth rather than a maximum. The seat must be equal to or shorter than your buttock-popliteal length, not longer.
API example
Request a predicted value for a 34-year-old woman at the 50th percentile in the United States. Adjust age, percentile, gender, and country to match your design scenario.
POST https://api.humanform.app/v1/predict
Authorization: Bearer hf_live_...
Content-Type: application/json
{
"measurement": "MaximumSeatLength",
"gender": "Female",
"age": 34,
"percentile": 50,
"country": "US",
"unit": "cm"
}Response values depend on age, percentile, gender, and country. Create a free dashboard account to run live predictions.
See design examples for worked scenarios that combine multiple measurements, or read the methodology page for percentile-based design thinking.
Explore the dataset
Humanform covers 148 measurements with country-adjusted predictions and separate female and male profiles. Browse the full inventory or read the API reference for request syntax.