Chemistry Calculators

Molar Ratio Calculator

Free online Molar Ratio Calculator. Quickly calculate and get instant results.

Mole Calculator

Free online Mole Calculator. Quickly calculate and get instant results.

Mole Fraction Calculator

Free online Mole Fraction Calculator. Quickly calculate and get instant results.

Molecular Weight Calculator

Free online Molecular Weight Calculator. Quickly calculate and get instant results.

Moles Calculator

Calculate the number of moles.

Moles to Atoms Calculator

Free online Moles to Atoms Calculator. Quickly calculate and get instant results.

Nernst Equation Calculator

Calculate cell potential using Nernst equation.

Net Ionic Equation

Use net ionic stoichiometric coefficients to convert limiting-reactant moles to product moles.

Neutralization Calculator

Compute the base volume (mL) needed to neutralize a given acid solution using stoichiometric equival

Normality Calculator

Calculate normality from molarity.

Osmotic Pressure Calculator

Calculate osmotic pressure using π = i·M·R·T (R = 0.082057338 L·atm·mol⁻¹·K⁻¹).

PKA Calculator

Uses Henderson–Hasselbalch: pKa = pH − log10([A−]/[HA]).

Partial Pressure Calculator

Compute partial pressure from Dalton’s law: P_i = x_i · P_total.

Percent Composition Calculator

Calculate percent composition of a compound.

Percent Ionic Character Calculator

Estimate percent ionic character from dipole moment and bond length: % = (μ_obs / (4.8032·r_Å))·

Percent Solution Calculator

Calculate mass percent of a solution: %w/w = (mass of solute ÷ mass of solution) × 100.

Percent Yield Calculator

Calculate percent yield of a reaction.

Phase Rule

Gibbs phase rule: computes degrees of freedom F = C − P + 2.

Ppm to Molarity Calculator

Free online Ppm to Molarity Calculator. Quickly calculate and get instant results.

Protein Solubility Calculator

Computes protein solubility from mass and volume (mg/mL; numerically equals g/L).

Q10 Calculator

Temperature coefficient: Q10 = (R2/R1)^(10/(T2−T1)).

Radioactive Decay Calculator

Free online Radioactive Decay Calculator. Quickly calculate and get instant results.

Raoults Law

Raoult’s law for an ideal solution: P = Xsolvent·P° and ΔP/P°.

Rate Constant Calculator

Calculate the rate constant of a reaction.