updated on Feb. 8, 2024

What is FormulaWeight20XX?

FormulaWeight20XX is a free scientific software to calculate formula/molecular weights of chemical substances. The newest atomic weights from IUPAC are used in this software. Perhaps no further information is needed if you know something about chemistry. The following is an example of calculating the molecular weight of ethanol that is the second most important liquid material, at least to me, on the earth.