Years of Life Lost (YLL) Calculator
Compute Years of Life Lost due to premature mortality for public-health reporting and burden-of-disease analysis.
How to Use the Years of Life Lost (YLL) Calculator
- Enter number of deaths.
- Enter average age at death.
- Enter reference life expectancy.
- Click Calculate.
Casos de Uso
- •Public-health reporting.
- •Burden-of-disease studies.
- •Policy impact evaluation.
Fórmula
YLL = deaths × (life_expectancy − age_at_death). Cannot be negative — deaths after life expectancy contribute zero.
Perguntas Frequentes
Which life expectancy should I use?
WHO GBD uses an aspirational reference of ~91.9 years (Japan female). National studies may use national life tables instead.
Why YLL instead of raw deaths?
YLL emphasises premature mortality — a 20-year-old and a 90-year-old both count as "1 death" but carry very different public-health burdens.
Medical disclaimer
Educational only. Not a substitute for epidemiological or clinical judgment — burden-of-disease metrics require trained analysts.