HOME   WISE Uranium Project   >   Calculators   >

Universal Decay Calculator

(last updated 25 Mar 2024)
Requires Firefox 3.5, Internet Explorer 9, or higher. JavaScript must be enabled.
For optional graphical output, the browser must be HTML 5-capable.
For educational purposes only. No warranty.
The decay and air kerma data is taken from ICRP-07 Data Files © A. Endo and K.F. Eckerman 2008.

Calculate radioactive decay of 1252 nuclides, including ingrowth and decay of their progeny, and show point-source air kerma.

Enter the parameters and click the "Calculate" button below. HELP

Numbers can be entered in exponential notation: 5.1 · 10-6 = 5.1e-6
"t" means metric tonne.

Your browser does not support JavaScript, or you have disabled it.
The Calculator won't work.
Enable JavaScript (Preferences Menu) and reload the page.


    Nuclide Input                
Activity Unit
Bq     kBq     MBq     GBq     TBq     mCi     Ci
Series NameNuclide NameInitial Activitypureequil. *indiv. **
* nuclide initially in secular equilibrium with its progeny
** individual specification of initial activity for each nuclide of series

Output Parameters                
TimeChart TypeChart DataChart DetailChart Axes


Mark list time in chart
no chart

line chart
stacked areas
animated bars
air kerma

air kerma
point source
distance [m]

total values of each series
all individual nuclide values
individual nuclide values
      for selected series:
      (multiple selections with CTRL-key)

show total for selection (line chart only)
skip minor nuclides
log. Y axis
      (line chart only)
     Decades on
     log. Y axis:

log. time axis/
     time steps




(Click legend items to toggle specific curves on/off)

(... copy and paste ...)


> See also:


HOME   WISE Uranium Project   >   Calculators   >