Exact Mass Calculator – Isotopic Mass & Abundance

Exact Mass Calculator

Monoisotopic Mass, Molar Mass & Isotopic Abundance Analyzer

Chemical Formula

Supports parentheses, e.g., CuSO4(H2O)5

Invalid chemical formula!

Exact Mass (Monoisotopic)

0.000000

Based on most abundant natural isotopes (Da / g/mol)

Average Molar Mass

0.0000

Standard IUPAC average atomic weights (g/mol)

Elemental Breakdown & Mass Distribution

Element	Most Abundant Isotope	Count	Isotope Mass (Da)	Subtotal Mass	Mass Ratio (%)