Chemistry Calculator
A versatile calculator for common chemistry tasks including molar mass, dilution, pH, and stoichiometry.
Published by:
isCalculator Editorial Team
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How to Use the Chemistry Calculator
This calculator has four tools. Follow the steps below for each.
1. Molar Mass
- Input: Enter a chemical formula (e.g.,
H2O,NaCl,C6H12O6). Use capital letters for elements (e.g.,Cofor cobalt, notCO). - Action: Click Calculate Molar Mass.
- Output: The molar mass in g/mol appears, with a breakdown of each element's contribution.
2. Dilution (C1V1 = C2V2)
- Input: Enter any three of the four values: Initial Concentration (C1), Initial Volume (V1), Final Concentration (C2), Final Volume (V2). All must be positive numbers.
- Action: Click Calculate Dilution.
- Output: The missing value is calculated and filled in. If all four are entered, it checks if the equation holds.
3. pH from [H+]
- Input: Enter the hydrogen ion concentration in moles per liter (M), e.g.,
0.001. - Action: Click Calculate pH.
- Output: The pH value (rounded to 2 decimals) is displayed.
4. Stoichiometry (Moles)
- Input: Enter the mass in grams and the molar mass in g/mol (both positive numbers).
- Action: Click Calculate Moles.
- Output: The number of moles (rounded to 4 decimals) is shown.
Tip: All inputs use metric units (g, mol, M, L). The result appears in the green box at the bottom, with a formula explanation below it.
Previous Results
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Frequently Asked Questions
Enter a chemical formula like H2O or NaCl. The calculator sums atomic masses based on the periodic table.
It solves for any unknown in the equation C1V1 = C2V2. Provide three values and leave one blank.
pH = -log10([H+]), where [H+] is the hydrogen ion concentration in moles per liter.