Half-life

per minute
Half-life:
Lifetime:
Already % decayed:
Still % available:
After already % decayed
After still % available
k (1. order) s-1
k (1. order) min-1



The results have been rounded to significant digits.

Half-life is defined as the amount of time it takes a given quantity to decrease to half of its initial value. The term is most commonly used in relation to atoms undergoing radioactive decay, but can be used to describe other types of decay, whether exponential or not.

How to Use:
First choose the correct unit in the corresponding pull-down-menu before you type a value. Type the value to convert into the field, behind which you find the unit. Click on any empty space in the window or on the “calculate” button. The converted result will be shown in the other fields. You can use the “reset” button to reset the process.

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