Chemistry
5 calculators, each with the derivation of its formula.
- Beer–Lambert law calculator (absorbance to concentration)Convert absorbance to concentration with A = εlc, or solve for absorbance, molar absorptivity or path length.
- Buffer pH calculator (Henderson–Hasselbalch)Find the pH of a buffer from its pKa and the ratio of conjugate base to weak acid, or the ratio you need to hit a target pH.
- Dilution calculator (C₁V₁ = C₂V₂)Work out how much stock solution to dilute to reach a target concentration and volume, or solve for any one of the four values.
- Ideal gas law calculator (PV = nRT)Solve the ideal gas law for pressure, volume, moles or temperature, with unit conversion for atm, kPa, mmHg, °C and °F.
- Molarity calculatorFind the mass of reagent to weigh out for a solution of a given molarity and volume, or solve for concentration, volume or molar mass.