Molar Mass Calculator

    You may input a molecular formula of any type such as
                K2Cr2O7 = K2Cr2O7
                CH3CH2COOH = CH3CH2COOH
                KFe[Fe(CN)6]3 = KFe(Fe(CN)6)3
                or Na2B4O7.10H2O = Na2B4O7.10(H2O)
and this will result in the molar mass and mass percent analyses being calculated when the button is pressed.

  • Please make sure that the formula has no more than two different bracket levels open at the same time.
    In other words Na(CH2(CO2(BN)2)3)4 will NOT compute because you can have at most one set of
    parentheses within another set of parentheses. For most molecules this should not pose a problem.

  • Also make sure that molecule of crystalization is placed last and that you have a period before
    its number such as shown above with water: Na2B4O7.10(H2O).

    Type the formula here: 

    After you input the formula, you MUST use the mouse to click the "calculate" button above!
    • Condensed
           Molar Mass =
    1.000 g = 
    mmole
    1 mmole = 
    g