​Life expectancy (LE) is the average number of years a person would continue to live if they experienced Jersey's current age-specific mortality rates throughout the rest of their entire life. 

Healthy life expectancy (HLE) is an extension of life expectancy, that combines mortality data with general health status data, to produce estimates of the span of life that a person can expect to live in 'very good' or 'good' health.

Healthy life expectancy can be calculated for any age, to give the further number of years a person can expect to live in good health on average, given the age they have already attained.