Radioactive Decay & Half-Life
Determine remaining isotopic activity for assay tracking.
Common Isotopes (Auto-fill Half-Life)
Custom Isotope...
Phosphorus-32 (14.29 days)
Sulfur-35 (87.32 days)
Tritium / H-3 (12.32 years)
Carbon-14 (5730 years)
Half-Life (tâ/â)
Initial Activity (Nâ) [e.g., mCi or Bq]
Elapsed Time (t)
*Must be in the same units as Half-Life
Remaining Activity (Nâ)
0.00
0.0% of original activity remains