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Half-Life Calculator
Radioactive decay calculator using N(t) = N₀ × (1/2)
t/t½
Solve for
Remaining Amount
Initial Amount
Time Elapsed
Half-Life
N(t) = N₀ × (1/2)
t / t½
Initial Amount (N₀)
Remaining Amount N(t)
Time Elapsed (t)
Half-Life (t½)
Calculate
Results
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Remaining Amount
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Initial Amount
-
Time Elapsed
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Half-Life
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Decay Constant (λ)
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Half-Lives Elapsed
Decay Curve
Common Isotopes