Hand · Medical · Specialist
Ring Finger Width Pip
The width of the ring finger at the proximal interphalangeal joint.
RingFingerWidthPip
How to measure
Application
Used in ring sizing at the knuckle — rings must pass over the PIP joint — and in finger splint design.
Posture
Hand flat, palm facing downward, finger straight and relaxed.
Landmark
Measured across the PIP joint — the middle knuckle of the ring finger.
Tool
Digital caliper.
Common mistake
Measuring at the base knuckle (MCP) rather than the PIP joint gives a wider result. The PIP is the middle knuckle, not the base.
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": "RingFingerWidthPip",
"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.