Radioactive Decay & Drug Half-Life Calculator
Compute exponential decay schedules, remaining quantities, and elimination rates.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. No data is ever transmitted across the network.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
How to Use Radioactive Decay & Drug Half-Life Calculator
Choose Carbon-14, Iodine-131, Caffeine, or enter custom half-life parameters.
Input starting quantity and total elapsed time duration.
Review remaining amount, total decayed percentage, and the 5-cycle schedule.
Frequently Asked Questions
What is the half-life equation?
N(t) = N0 × (1/2)^(t / t_half), where N(t) is remaining quantity, N0 is initial quantity, t is time elapsed, and t_half is the half-life period.
How many half-lives are needed for 99% of a substance to decay?
Approximately 7 half-lives reduce a substance to under 1% of its original amount (0.5^7 ≈ 0.78%).
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