Given a set of times and survival population counts, the calculator will determine the following:

Survival Population l_{x}

Mortality Population d_{x}

Survival Probability p_{x}

Mortality Probability q_{x}

In addition, the calculator will determine the probability of survival from t_{x} to t_{x + n}

This calculator has 2 inputs.

Survival Population l

Mortality Population d

Survival Probability p

Mortality Probability q

In addition, the calculator will determine the probability of survival from t

This calculator has 2 inputs.

- d
_{x}= l_{x}- l_{x + 1}

p_{x}= l_{x + 1}/ l_{x}

q_{x}= 1 - p_{x}

For more math formulas, check out our Formula Dossier

- mortality
- a measure of the number of deaths in a particular population, scaled to the size of that population, per unit of time.
- probability
- the likelihood of an event happening. This value is always between 0 and 1.

P(Event Happening) = Number of Ways the Even Can Happen / Total Number of Outcomes - survival
- survival rates
- a part of survival analysis. It is the proportion of people in a study or treatment group still alive at a given period of time after diagnosis