Research utility
Half-Life Decay Calculator
Explore exponential decay with a responsive mathematical model and clearly marked half-life intervals.
Control matrix
Decay parameters
Estimated amount remaining
25.00 mg
Percentage remaining
50.00%
Half lives elapsed
1.00
Amount eliminated
25.00 mg
Illustrative mathematical model
Exponential decay curve
At 24.0 hours, the model estimates 25.00 milligrams remaining, or 50.00 percent of the initial amount.
AFTER 1
50.0%
remaining
AFTER 2
25.0%
remaining
AFTER 3
12.5%
remaining
AFTER 4
6.25%
remaining
AFTER 5
3.125%
remaining
This is a mathematical visualization, not a prediction of individual pharmacokinetics. Real-world results vary by substance, formulation, route, and individual.