Half-Life Calculator

N0 Initial Value

NT Current Value

T Time Elapsed



Tn New Time

NTn Value at New Time


Nn New Value

TNn Time at New Value


Juicy Satsuma Half-life calculator

Half-life is the time it takes for something to fall to half of its value. It's commonly used to describe radioactive decay but has many other uses. It can be used to predict time from a drug to leave a body, bugs being removed from a peice of software, fluid leaving a tube, atmospheric pressure, transfer of heat, consumption of a reutement fund, routing protocol performance, time to complete a binary search, and anything else which decays exponentially.