Calculators
This calculator sets to provide quantities which are derived from the standard atomic weights. These are molecular weights, isotopic abundances, and isotope ratios of molecules (isotope patterns).
Many molecular weight calculators are available online to offer this information. Yet, majority if not all, do not incorporate uncertainty estimates of their results or use outdated input data.
Formally a product of IUPAC Projects 2013-032-1-200 and 2015-037-2-200,
the IUPAC Molecular Weight calculator is written in R (a free software environment for statistical computing and graphics, www.r-project.org)
and Shiny (a web application framework for R, shiny.rstudio.com). It requires no installation and runs from any Internet browser. Note that this calculator is currently in its beta release.
It is currently available online from shinyapps.io.
magicalmaths.org
The Commission on Isotopic Abundances and Atomic Weights is committed to developing modern digital tools.
