How to use:
  1. Place your cursor in the field at the top-left (it should be automatically there).
  2. Type a Chemical Formula, using only normal brackets (meaning '(' and ')' ).*
  3. Chemical composition and elemental analysis will be shown as you type
* For some reason I can't get other types of brackets to work, but given the tool tells you of a mistyped formula, you should not have a problem.

optional:
for each conversion, please alter the type of units as needed before converting Error Messages: They appear in a box like below, and describe the error. Two exist; one saying that the element is unknown (a mistype or use of shorthand), and the other saying your brackets are mismatched
Sample Error Message

Chemical composition calculations

Please use only standard brackets: '(' and ')'. Formulae entered with square brackets [ ]) will not always give expected results

calculation in progress ...

COSSH forms

Mass used
unit
volume
unit
density
update
update the mass based on the mmol update the mmol based on the mass update the mmol based on the volume
equiv
mmols
unit

Elemental analysis workup

C:
H:
N:

Composition

 
Version 1.2.2 (15-Jan-2014)
If you like this tool or want to send on comments, please contact me on GitHub