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Physics and chemistry calculators for students and the curious: molar mass of a chemical formula, pH of a solution, density (mass/volume), kinetic energy and radioactive half-life. Exact formulas, instant results, 100% in your browser.
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Molar mass calculator
Chemical formula (H2O, C6H12O6…) → molar mass in g/mol.
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pH calculator
Concentration [H⁺] → pH, pOH and [OH⁻] of a solution.
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Density calculator
Mass and volume → density in g/cm³ and kg/m³.
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Kinetic energy calculator
Mass and velocity → kinetic energy (½ m v²) in joules.
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Half-life calculator
Initial amount, half-life and time → remaining amount.
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