Half-Life Calculator

Calculator for the half-life given the rate of decay per period

Half-Life Calculator


This function calculates the time or periods required to reduce to half of its initial value for a given decrease per period.

Alternatively, the decrease can be calculated in % per period, which is required to halve the initial value in the specified time or periods.


Half-Life Calculator

 What should be calculated?
 Input
Decay in % per period
Half-Life (Periods)
Decimal places
Result
Half-Life (Periods)
Decay in % per period

Half-life formulas


\(t\) = half-life (periods)
\(d\) = decay in % per period

\(\displaystyle t = \frac{log(0.5)}{log(1-\frac{d}{100})}\)


\(\displaystyle d=-(e^{\left(\frac{log(0.5)}{t}\right)}-1)\cdot 100\)


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