Molecular Weight Calculator
Please enter the chemical formula of a compound to determine its molar mass and elemental composition
Tip:The chemical formula is case-sensitive. For example, C23H34O5 c23h34o5
Instructions for Calculating Molar Mass (Molecular Weight) of a Chemical Compound:
To calculate the molar mass of a chemical compound, enter the chemical formula and click 'Calculate.'
Definitions of Molecular Mass, Molecular Weight, Molar Mass, and Molar Weight:
Molecular Mass (Molecular Weight): The molecular mass, also referred to as molecular weight, is the mass of a single molecule of a substance. It is expressed in unified atomic mass units (u), where 1 u is equivalent to 1/12th the mass of a carbon-12 atom.
Dilution Calculator
Calculate the mass, volume or concentration required for a solution. The Selleck molarity calculator is based on the following equation:
Mass (mg) = Concentration (mM) × Volume (mL) × Molecular Weight (g/mol)
*When preparing stock solutions, please always use the batch-specific molecular weight of the product found on the via label and MSDS / COA (available on product pages).