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? Half-Life (Periods) Decrease in % per period  Input Delete Entry Decay in % per period Half-Life (Periods) Decimal places 0 1 2 3 4 6 Result Half-Life (Periods) Decay in % per period

Half-life formulas

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

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

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