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Half Life Calculator — Free Online Calculator
Half Life solves N(t) = N₀ × (½)^(t / t½) — N(t) = remaining quantity, N₀ = initial quantity, t = elapsed time, t½ = half-life. Enter your known values and the calculator solves for the rest instantly. Everything is computed locally in your browser — your data never leaves your device. Completely free, with no account required.
How to use Half Life
- Enter your known values in the fields.
- The result updates instantly as you type.
- Copy or note down the result.
Frequently asked questions
- What formula does Half Life use?
- N(t) = N₀ × (½)^(t / t½) — N(t) = remaining quantity, N₀ = initial quantity, t = elapsed time, t½ = half-life.
- Can I use it on my phone?
- Yes. The layout adapts to small screens and behaves the same on mobile as on desktop.
- Is my input saved anywhere?
- No. Values stay in your browser and are gone as soon as you close the tab.
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