Half Life Calculator - Domainconverters

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Half Life Definition

It is the time required for any specified property (e.g. the concentration of a substance in the body) to reduce to half its initial value.

In Radioactive Decay : Half Life is the time taken for the radioactivity of a specified isotope to fall to half its original value. example : "iodine-131 has a half-life of 8.1 days".

Please enter the details below to calculate Half life of a radioactive substance.

Note : Half-life is constant over the lifetime of an exponentially decaying quantity, and it is a characteristic unit for the exponential decay equation.