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Molecular Mass

Calculate the relative mass of a molecule or salt and the number of protons from its chemical formula. Please enter the formula with the common element symbols, numbers not subscripted. The molecules may contain the elements 1 - 96 (hydrogen - curium, H - Cm), as well as deuterium (D). Brackets can't be processed, spaces are ignored. It won't be checked, if the according molecule exists or is possible. For the masses of the single elements, see atomic masses.
Examples for possible formulas are H2O for water, AgNO3 for silver nitrate and C72 H100 Co N18 O17 P for vitamin B12.

Molecular formula:

Round to    decimal places

Relative molecular mass: u

Number of protons:


No responsibility is taken for the correctness of this information.

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