KLOORAHalf Life Calculator
Find the remaining amount of a substance after a time, using its half life.
Quick answer: Half Life Calculator: Find the remaining amount of a substance after a time, using its half life. Everything runs in your browser, so nothing you enter is uploaded or stored.
How to use Half Life Calculator
- Enter your values in the fields.
- The results update instantly as you type.
- Note or copy the numbers you need.
Features
- Instant results
- Free, no signup
- Runs in your browser, nothing is uploaded
- Works on phone and desktop
Formula
N = N0 x 0.5^(t / half life).
Worked example
Carbon 14 (half life 5,730 years) leaves 29.8 percent after 10,000 years.
Frequently asked questions
What is the formula?
N = N0 x (1/2) ^ (t / half life).
What units?
Time and half life must use the same unit.
Is the Half Life Calculator free?
Yes. It is free, needs no signup and works on any device.