Control placement
Position panels, switches, and touch targets within forward reach.
Measurement
Work Reach
Work Reach for fit, clearance, and sizing decisions across populations.
Forward horizontal reach distance from the back of the shoulder to the tip of the middle finger with the arm extended.
Male–female median gap
Difference between median predictions for the 25yo US cohort.
3.6 cm (9%)
Median male is 3.6 cm larger than median female
Design accommodation range
5th to 95th percentile span for the 25yo US cohort (cm).
Male
- Low
- 38.9 cm
- Median
- 41.7 cm
- High
- 44.0 cm
Female
- Low
- 35.8 cm
- Median
- 38.1 cm
- High
- 40.4 cm
Male vs female distribution
Predicted values at key percentiles for 25-year-olds in the United States (cm).
Related arms measurements
Median values for nearby arms peers in the 25yo US cohort (cm). Male and female medians as paired bars when both are available.
- Upper Arm LengthMale 28.5Female 26.7cm
- Upper Arm Circumference MidpointMale 33.0Female 31.3cm
- Shoulder Elbow LengthMale 37.0Female 33.5cm
- Work ReachCurrentMale 41.7Female 38.1cm
- Elbow Fingertip LengthMale 48.0Female 42.6cm
- Elbow To Middle Fingertip LengthMale 48.0Female 42.6cm
Typical applications
Retail and service
Set shelf depth and service counter reach for staff populations.
Robotics and automation
Define human reach envelopes for collaborative workstations.
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 work reach for the ages, percentiles, genders, and countries you design for. Start with a free API key.