This Bone Age Calculator estimates skeletal maturity based on age, gender, height, and weight. Results are for educational purposes only.
The calculator compares growth indicators with typical developmental patterns to estimate whether skeletal maturity is delayed, average, or advanced.
Ethan builds the interactive health calculators on Height Growth Blog. Based in Denver, Colorado, he combines a software engineering background with a focus on evidence-based health tech, turning dense clinical guidelines — from CDC growth charts to NIH/IOM dietary references — into tools parents and teens can use in under a minute. Every calculator on the site, from BMI Percentile to Body Fat and Calcium Intake, is built directly from primary sources (NIH, AAP, CDC, Mayo Clinic) and cross-checked against peer-reviewed studies before launch.
