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The result depends on the numbers you enter and the assumptions shown below.
Half-life is the time for a quantity to reduce by half. Formula: N(t) = N₀ × (1/2)^(t/t½). Used in nuclear physics, pharmacology (drug half-life), and carbon dating.
Review the inputs carefully and treat the output as an estimate. For decisions involving money, taxes, health, law, or security, compare the result with trusted professional guidance when needed.
Frequently asked questions
What is a half-life?
Half-life (t½) is the time required for a quantity to fall to half its initial value. After n half-lives, the remaining amount is N₀ × (0.5)^n.
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