Half-Life Calculator
Calculate the amount remaining after radioactive or exponential decay using the half-life formula. Used in nuclear physics, chemistry, and pharmacology.
Enter Values
Carbon-14 has a half-life of 5,730 years
Calculator insights
What this calculator does
Half-Life Calculator helps you quickly estimate calculate the amount remaining after radioactive or exponential decay using the half-life formula. used in nuclear physics, chemistry, and pharmacology. with clean output and clear next steps.
How the calculation works
Enter Initial Amount, Half-Life, Time Elapsed and this calculator uses standard formulas to determine Amount Remaining and Percent Remaining. The output is displayed immediately in a user-friendly format.
Example calculation
For example, enter realistic values into the Half-Life Calculator to see how the calculator produces Amount Remaining and Percent Remaining that you can use for planning and comparison.
Disclaimer
The calculations provided by this website are for informational purposes only and should not be considered financial, legal, tax, or professional advice.
Frequently Asked Questions
What is the half-life formula?
N(t) = N₀ × (1/2)^(t/t½), where N₀ is initial amount, t is elapsed time, and t½ is the half-life period.