Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Nuclear
Radioactive Decay Calculator
Compute how much of a radioactive isotope remains after a given elapsed time using its half-life. Useful for carbon dating, medical isotope planning, nuclear waste decay estimates, and radiometric geology.
Fill in the required fields to see your result.
Nuclear
Radioactive Activity Calculator
Computes the radioactive activity of a sample in curies from its atom count and decay constant. Use this when characterizing radioisotope sources for medical physics, nuclear waste inventory, or laboratory safety.
Fill in the required fields to see your result.
Key differences
| Radioactive Decay Calculator | Radioactive Activity Calculator | |
|---|---|---|
| Category | Nuclear | Nuclear |
| Inputs required | 3 | 2 |
| Result | Remaining Amount (g) | Activity (Ci) |
| What it does | Compute how much of a radioactive isotope remains after a given elapsed time using its half-life. Useful for carbon dating, medical isotope planning, nuclear waste decay estimates, and radiometric geology. | Computes the radioactive activity of a sample in curies from its atom count and decay constant. Use this when characterizing radioisotope sources for medical physics, nuclear waste inventory, or laboratory safety. |