Chemistry Formula Calculator
Calculate molar mass, empirical & molecular formulas, balance chemical equations, and percent composition. Built-in 118-element periodic table with atomic masses. Formula parser handles parentheses and hydrates (CuSO4·5H2O). Equation balancer uses brute-force integer search. 100% client-side — 18 extra features including CSV/text export, history, shareable URL, presets, isotope selector.
Calculate molar mass, empirical & molecular formulas, balance chemical equations, and percent composition. Built-in 118-element periodic table with atomic masses. Formula parser handles parentheses and hydrates (CuSO4·5H2O). Equation balancer uses brute-force integer search. 100% client-side — 18 extra features including CSV/text export, history, shareable URL, presets, isotope selector. Everything runs locally in your browser — your data never leaves your device.
How to use
- Enter your input in the tool above.
- Adjust any options to your preference.
- Use the Copy or Download buttons to save the result.
- Everything happens locally — your data never leaves your browser.