Use the JEOL mass spectrometry calculator to calculate stable isotope distributions for a given elemental composition, calculate the possible elemental compositions for an accurate mass. You can also calculate m/z values for multiple charge ions from a molecular weight or molecular weight from two successive charge states. Please see the support page for instructions.
Version history
1.14
2022-05-24
Displayed in Light Mode regardless of system display setting. This circumvents a problem where the instrument selector and NMR frequency selector are not displayed correctly in Dark Mode.
1.12
2022-05-17
Recompiled with latest XCODE. Minor change to help file.