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Concentration & mixtures calculators
Work with moles, concentration, dilution and mixture fractions.
Choose the right calculation
Keep mass, amount and volume definitions separate. Molarity uses final solution volume; molality uses solvent mass. A dilution cannot increase concentration without some process beyond adding solvent.
Find a tool for your question
Moles Calculator
Convert a substance’s mass into amount of substance using its molar mass.
Molarity Calculator
Calculate solution molarity from solute amount and final solution volume.
Dilution Calculator
Find stock volume required for a target diluted concentration.
Mass Percent Calculator
Calculate a component’s mass percentage within a mixture.
Molality Calculator
Calculate molality using solute amount and solvent mass.
Molecule Count Calculator
Convert moles to a count of specified elementary entities.
Mass Concentration Calculator
Find solute mass per litre of final solution.
Solution Mass Calculator
Find solute mass needed for a chosen molarity and final solution volume.
Mole Fraction Calculator
Find a component’s mole fraction in a two-component mixture.
Solution Mixing Calculator
Estimate concentration after mixing two solutions with additive volumes.
Parts Per Million Calculator
Calculate mass-based ppm from solute and total mixture masses.
Molar Mass From Sample Calculator
Recover molar mass from a known sample mass and amount of substance.
Solvent Mass From Molality Calculator
Find solvent mass for an entered molality and solute amount.
Molarity From Mass Concentration Calculator
Convert a mass concentration into molar concentration.
Mass From Weight Percent Solution Calculator
Find solute mass in a mixture specified by mass percentage.
Solvent Mass in Solution Calculator
Separate solvent mass from a two-component solution mass and solute percentage.
Dilution Factor Calculator
Express a concentration reduction as a dilution multiple.
Serial Dilution Concentration Calculator
Estimate concentration after equal serial dilution stages.
Solvent Addition for Dilution Calculator
Estimate solvent addition needed to dilute a fixed stock-solution volume.
Volume Percent Calculator
Express a component’s entered volume as a percentage of final mixture volume.
Mass Volume Percent Calculator
Find the grams-per-100-millilitres concentration of a solution.
Ideal Strong Acid pH Calculator
Estimate concentration-based pH under an explicitly ideal strong-acid model.
Ideal Strong Base pH Calculator
Estimate an ideal strong-base pH under a stated room-temperature approximation.
Henderson Hasselbalch Calculator
Estimate buffer pH from an entered pKa and conjugate-base-to-acid ratio.
Are molarity and molality interchangeable?
No. Molarity is amount per solution volume, while molality is amount per solvent mass.
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