All calculatorsGOB Chemistry Calculators & Converters
Connect chemistry to life—fast answers, solid understanding.
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
Boiling Point Elevation Calculator
Calculate boiling point elevation and new boiling point of solutions
Buffer Preparation Calculator
Generate lab-ready buffer recipes from target pH and volume.
Calorimetry Calculator
Solve calorimetry problems: heat, mixing, phase change, heating curves
Cell Dilution Calculator
Calculate cell dilution volumes for target concentration, seeding & serial dilutions
Cube Volume Calculator
Instant cube volume from edge or diagonal, with unit conversion.
DNA Copy Number Calculator
Convert DNA mass, concentration, or molarity into copy number
Empirical Formula Calculator
Calculate empirical formulas from mass or percent composition with steps
Entropy Calculator
Calculate entropy changes for gases, heating, and phase changes
Enzyme Activity Calculator
Compute enzyme units, rate, and specific activity from lab assays
Equilibrium ICE-Table Calculator
Calculate chemical equilibrium using ICE tables, Q vs K, and steps
Factoring Calculator
Quickly factor ax² + bx + c and get the roots
Gibbs’ Phase Rule Calculator
Calculate system degrees of freedom from components, phases, and reactions
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