Stoichiometry calculators

• Atom Economy Calculator

  Find what fraction of stoichiometric reactant mass ends up in the desired product.

• Avogadro’s Number Calculator

  Connect a particle count, moles and sample mass using the exact Avogadro constant.

• Grams to Moles Calculator

  Convert grams to moles, moles to mass, or determine molar mass from a measured mass and amount.

• Hydrogen Ion Concentration Calculator

  Find approximate hydrogen-ion concentration from pH or pOH, with an adjustable water ion product.

• Molality Calculator

  Calculate moles of solute per kilogram of solvent, using either solute moles or mass.

• Molarity Calculator

  Calculate solution molarity from solute mass or moles and the final solution volume.

• Molar Mass of Gas Calculator

  Estimate a gas’s molar mass from its measured mass, volume, pressure, and temperature.

• Mole Calculator

  Convert mass, amount of substance and particle count with a known molar mass.

• Molecular Weight Calculator

  Find relative molecular mass and elemental contributions from a chemical formula.

• Mole Fraction Calculator

  Find each component’s share of the total amount in a binary mixture, from moles or masses.

• Moles to Atoms Converter

  Convert moles of atoms to an atom count, or reverse the conversion.

• Normality Calculator

  Calculate equivalents per liter from solute mass and equivalent weight, or from molarity and a reaction factor.

• PPM to Molarity Calculator

  Convert mass-based parts per million into molar concentration with an explicit solution-density correction.

• Residence Time Calculator

  Estimate nominal residence time from system volume and flow, or from travel length and mean velocity.

More to explore

Curiosity rarely stays in one category. Browse our complete collection or use the search at the top of the page to find a specific calculation.