YouLiveLong guide
Life expectancy, properly understood
Life expectancy is not an expiration date. It is an average produced by a survival curve. Learn what changes with your current age and why conditional survival matters.
Three numbers people often confuse
At birth
Summarizes mortality across an entire lifetime using current rates. It includes risks you have already survived.
At your current age
Conditions on being alive today. For that reason, expected age at death usually rises as current age rises.
Cohort expectancy
Attempts to include future mortality improvements. Our V1 deliberately uses the more transparent period measure.
The practical reading
Use an estimate as a center of a very wide distribution. Milestone probabilities and the full survival curve convey uncertainty better than a single age.