All calculatorsIntro to Chemistry Calculators & Converters
Build strong foundations—chemistry made approachable.
Activation Energy Calculator
Compute Eₐ or k₂ using the Arrhenius equation with steps
Actual Yield Calculator
Find actual, percent, or theoretical yield with unit conversion
Arrhenius Equation Calculator
Calculate k, activation energy, or k₂—clear steps and plot included
Bohr Model Energy Level Calculator
Compute Bohr energy levels and photon transitions with clear steps
Boiling Point at Altitude Calculator
Compute boiling temperature vs. altitude using Antoine or Clausius–Clapeyron
Cube Volume Calculator
Instant cube volume from edge or diagonal, with unit conversion.
Entropy Calculator
Calculate entropy changes for gases, heating, and phase changes
Half-Life Calculator
Compute N, k, t, or t₁/₂—enter three, get the rest
Mixing Ratio Converter
Convert ratio ↔ percent and compute amounts for w/w, w/v, v/v
Molar Ratio Calculator
Compute mole or mass relationships from balanced chemical equations
Percent Solution Converter
Convert w/w, w/v, and v/v percent solutions — with clear steps
Percent Yield Calculator
Find percent yield, actual yield, or theoretical yield instantly
Rate Constant Calculator
Compute k from rate or integrated laws with steps, visuals
Rate of Effusion Calculator
Calculate any missing rate or molar mass using Graham’s Law
Reaction Quotient (Q) Calculator
Calculate Qc or Qp with steps, charts, and shift prediction
Serial Dilution Calculator
Build serial dilution series with clear steps, tables, and visuals
Solution Dilution Converter
Easily convert between stock and diluted solutions — fast, visual, and accurate.
Theoretical Yield Calculator
Find limiting reagent and theoretical yield with step-by-step results
Water Hardness Calculator
Compute hardness from ions or EDTA—ppm, gpg, and dH