Molecular weight calculator

Chemical formular

A simple tool for calculation of molecular weights by the chemical formular. The tool will calculate the mass directely while writing or pasting the formular into the input field. You only have to care about upper and lower cases. Potassium writen like "na" or "NA" will not be recognized correctly but "Na". Numbers are assgined to the element written before, i.e "Na5" means 5x potassium.

Enter a molecular formular like: "C6Cl5NO2" Calulation is case sensitive, use "Yb" not "yb"

	Splited
	Da

Proteins & petides

Add the primary sequence of your protein or peptide
Use one-letter fasta format (MATGVFSW...)

Amino acids

Nucleic acids

Insert your DNA or RNA sequence

Bases/ basepairs
n	A	T		C	G	U
%
			Da