☢️ Half-Life Calculator
Calculate radioactive half-life decay
How Half-Life Calculation Works
- 1Enter any three of: initial quantity, remaining quantity, half-life, and elapsed time.
- 2The formula N = N₀ × (1/2)^(t/t½) is solved for the unknown variable.
- 3The result is displayed along with a decay curve graph.
About Half-Life Calculator
Calculate radioactive decay, remaining quantity, or elapsed time using the half-life formula. Works for any exponential decay process.
Frequently Asked Questions
Does it work for non-radioactive decay?
Yes. The half-life formula applies to any exponential decay process — drug metabolism, chemical reactions, capacitor discharge, etc.
Can I calculate how long until a certain amount remains?
Yes. Enter the initial amount, remaining amount, and half-life to solve for elapsed time.