08 tools · 8 live
Chemistry Calculators
Molarity, molecular weight, stoichiometry, and lab calculators.
Chemistry tools cover the calculations that come up constantly in an intro chemistry course or a lab: balancing chemical equations, working out molarity and dilutions, the ideal gas law, limiting reactants, and percent yield. Stoichiometry — the equation-balancing and limiting-reactant tools specifically — is usually where students get stuck first, since it requires tracking mole ratios rather than plugging numbers into a single formula.
These are calculation aids for checking your own work, not a substitute for understanding the underlying chemistry — especially the equation balancer, where more than one valid coefficient set can exist and the tool returns the simplest, lowest whole-number set, matching how it's conventionally taught.
Molarity and dilution calculations come up in almost every wet-lab course, which is why the dilution calculator walks through the underlying C₁V₁ = C₂V₂ relationship explicitly rather than just returning a number — rearranging that formula correctly trips up more students than the arithmetic itself.
pH
LiveCalculate pH, pOH, [H⁺], and [OH⁻] from any one input. Includes a live colour-coded pH scale from 0 (strongly acidic) to 14 (strongly alkaline).
Ideal Gas Law
LiveSolve PV = nRT for pressure, volume, moles, or temperature. Supports atm, kPa, mmHg, bar, psi, litres, mL, m³, Kelvin, Celsius, and Fahrenheit.
Dilution
LiveSolve C₁V₁ = C₂V₂ for any of the four variables, with molar or mass concentration units, multiple volume units, and a serial-dilution schedule.
Stoichiometry
LiveSolve stoichiometry problems from any balanced equation: convert mass, moles, particles, solution volume, or gas volume between reactants and products with a step-by-step working log.
Percent Yield
LiveCalculate percent yield, actual yield, or theoretical yield for any chemical reaction, with efficiency rating and over-100% warnings.
Chemical Equation Balancer
LiveBalance any chemical equation instantly using the algebraic null-space method, with an atom count verification table.
Limiting Reactant
LiveFind the limiting reactant, theoretical yield, and excess reactants left over from any balanced reaction.
Specific Heat
LiveSolve q = m·c·ΔT for heat, mass, specific heat, or temperature change, with material presets and full unit conversions.