Chemistry Calculators
Free chemistry calculators: find the molar mass of any formula with a breakdown by element, and work out molarity, mass to weigh out and dilutions.
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All Chemistry Calculators
Chemistry Calculators Explained
Most chemistry calculations start with the mole, and our calculators help you move between grams, moles and concentration. The Molar Mass Calculator reads a formula such as H2SO4, Ca(OH)2 or CuSO4·5H2O and gives its molar mass with the mass of each element and its percentage, and can turn a sample in grams into moles and particles. The Molarity Calculator finds the molarity of a solution, the mass to weigh out for a chosen molarity, and the stock volume needed to make a dilution.
They are built for students and lab work, and the answers use standard atomic weights. Always follow your lab safety rules when you make up real solutions, and check units carefully: the volume in molarity is in liters of the finished solution.
Popular chemistry calculators include Molar Mass Calculator and Molarity Calculator.
Frequently Asked Questions
Are the chemistry calculators free to use?
Yes. Every chemistry calculator on CalculatorEver is free, with no signup. The calculations happen in your browser, and the numbers you enter are not stored or sent to a server.
What is a mole?
A mole is 6.022 × 10²³ particles of a substance. The molar mass tells you how many grams one mole weighs, which lets you turn a mass you can weigh into an amount of substance.
Which calculator should I start with?
Start with the Molar Mass Calculator to find the molar mass of your compound, then use the Molarity Calculator to work out concentration, the mass to weigh, or a dilution.
Which atomic masses do the calculators use?
Standard atomic weights rounded as in most textbooks. Your course may use slightly different values, which can change the last digit of an answer.
