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
Equilibrium ICE-Table Calculator
Calculate chemical equilibrium using ICE tables, Q vs K, and steps
Half-Life Calculator
Compute N, k, t, or t₁/₂—enter three, get the rest
Langmuir Isotherm Calculator
Solve Langmuir isotherm adsorption parameters and capacity
Lattice Energy Calculator
Estimate lattice energy using the Born–Landé model or Born–Haber cycle
Limiting Reactant Calculator
Find the limiting reactant and theoretical yield from a balanced reaction
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
PCR Master Mix Calculator
Calculate per-reaction and total PCR master mix volumes (with overage)
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
Protein Concentration Calculator
Calculate protein concentration via A280, standard curves, and dilutions.
Radiocarbon Dating Calculator (Carbon-14)
Calculate radiocarbon age from C-14 fraction, pMC, or activity ratio
Rate Constant Calculator
Compute k from rate or integrated laws with steps, visuals