Calculators

Calculates the molar mass (molecular weight) of a chemical compound or element. Enter the chemical formula to calculate its molar mass.

Calculates the pH, pKa, or the ratio of acid and conjugate base concentrations using the Henderson-Hasselbalch equation. This equation is commonly used in chemistry, biology, and medicine to estimate the pH of a buffer solution.

Converts between moles, mass, and molecular weight.

Calculates the amount of bleach and water needed to achieve a desired chlorine concentration for disinfection purposes.

Calculates the molar mass of a gas using the ideal gas law (PV = nRT), where molar mass (M) = mass / moles. This calculator rearranges the ideal gas law to solve for molar mass: M = (mass * R * temperature) / (pressure * volume).

Calculates the average atomic mass of an element based on the masses and natural abundances of its isotopes.

Calculates the dilution factor, final volume, initial volume, or final concentration based on the given inputs. Dilution is the process of reducing the concentration of a solute in a solution, usually simply by mixing with more solvent.

Calculates the rate constant of a chemical reaction using the Arrhenius equation, which relates the rate constant to the activation energy, temperature, and pre-exponential factor.

Calculates the number of protons, neutrons, and electrons in an atom based on its atomic number and mass number. Assumes a neutral atom unless the charge is specified.

Calculates the molarity of an unknown solution using titration data.