李渊越实验室

Molecular Ion Mass Calculator

Calculate neutral monoisotopic mass and common positive and negative adduct masses from a molecular formula.

Results update automatically. Supports grouped formulas and hydrates, such as Ca(OH)2 and CuSO4·5H2O.

[M+H]+

m/z

Neutral monoisotopic mass

Da

[M−H]−

m/z

Calculated directly

Adduct masses

34 common ions · singly charged

Positive ions

21 adducts
Positive adduct mass-to-charge values
Adduct m/z

Negative ions

13 adducts
Negative adduct mass-to-charge values
Adduct m/z