Half Life Calculator
Calculate half life — decay and half-life analysis.
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Amount Remaining
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Amount Decayed
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Half-Lives Passed
Recent Calculations
What Is Half Life?
Half Life calculates exponential decay using the half-life formula.
Formula
N(t) = N₀ × (½)^(t/t½)Frequently Asked Questions
What is a half-life?
The time it takes for a quantity to reduce to half its initial value.