Bayesian Age Prediction Calculator
Estimate age from sex, density, UB, LB, Outline, ST, and Top using the combined Oxford female and male datasets.
Sex-aware Bayesian model
Enter observations
Values update automatically. Half-point entries are accepted for bilateral averages.
Model and validation details
Training sample
Age range
Cross-validated RMSE
Cross-validated MAE
95% interval coverage
MethodRegularized conjugate Bayesian regression with sex-specific linear and quadratic terms
Posterior prediction
Predicted age—years
80% interval—years
95% interval—years
Enter observations to calculate a prediction.
Posterior predictive distributionexact interval bounds use Student-t quantiles
A posterior predictive interval describes plausible ages for a new individual under this model. It is wider than uncertainty around the regression mean because it includes individual variation.
Research-use caution: This calculator has internal cross-validation but no independent external validation. Do not use it as the sole basis for forensic identification or case conclusions.