Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Nuclear
Nuclear Decay Rate Calculator
Calculates the number of radioactive atoms remaining after a given time using the half-life decay law. Useful in nuclear medicine, radiological safety, and isotope dating applications.
Fill in the required fields to see your result.
Nuclear
Nuclear Waste Heat Calculator
Estimate the decay heat power still being generated in a shutdown nuclear reactor or spent fuel assembly using the ANS-5.1 standard approximation. Used for designing cooling systems, spent-fuel pool sizing, and emergency core cooling analysis.
Fill in the required fields to see your result.
Key differences
| Nuclear Decay Rate Calculator | Nuclear Waste Heat Calculator | |
|---|---|---|
| Category | Nuclear | Nuclear |
| Inputs required | 3 | 3 |
| Result | Remaining Atoms (atoms) | Decay Heat (MW) |
| What it does | Calculates the number of radioactive atoms remaining after a given time using the half-life decay law. Useful in nuclear medicine, radiological safety, and isotope dating applications. | Estimate the decay heat power still being generated in a shutdown nuclear reactor or spent fuel assembly using the ANS-5.1 standard approximation. Used for designing cooling systems, spent-fuel pool sizing, and emergency core cooling analysis. |