Chemistry calculators
Molarity, dilution, pH, and lab stoichiometry.
- Molarity Calculator (from Moles or Grams, L or mL)
Molar concentration from moles or grams of solute and the solution volume, with the working and the value in mM.
- Molar Mass Calculator (Grams ↔ Moles)
Molar mass from a mass and an amount, or convert grams to moles and moles to grams with a known molar mass, working shown.
- Dilution Calculator (C₁V₁ = C₂V₂)
Solve C₁V₁ = C₂V₂ for the final volume, the final concentration or the stock volume, with the solvent to add and the dilution factor.
- pH Calculator (from [H₃O⁺], [OH⁻] or pH)
pH and pOH from a hydronium or hydroxide concentration, or both concentrations from a pH, with the working.
- Ideal Gas Law Calculator (PV = nRT in atm, kPa, L, °C)
Solve PV = nRT for pressure, volume, moles or temperature in everyday units, converted to SI with the working shown.
- Percent Yield Calculator (Actual ÷ Theoretical Yield)
Percent yield of a reaction from the actual and theoretical yields, with the amount not recovered.
- Solution Concentration Calculator (g/L, % w/v, mg/mL, ppm)
Mass concentration of a solution from solute mass and solution volume, in g/L, percent w/v, mg/mL and ppm.
- Half-Life Calculator (Radioactive and Exponential Decay)
How much of a substance remains after a given time from its half-life, with the decay constant, mean lifetime and the working.