Free equilibrium constant calculator — write Kc/Kp expressions, solve ICE table problems, convert Kp to Kc using Kp=Kc(RT)^Δn, and compare Q to K to predict reaction direction. Full step-by-step solutions with color-coded ICE tables.
Free Gibbs free energy calculator — compute ΔG=ΔH−TΔS, find spontaneity, convert ΔG° to equilibrium constant K (ΔG°=−RT×lnK), calculate ΔG from cell voltage (ΔG=−nFE), and use standard Gibbs free energy of formation tables. Full step-by-step working.
Free enthalpy calculator — compute ΔH of reaction using Hess’s law, solve calorimetry problems (q=mcΔT), find enthalpy of fusion and vaporization, and use Clausius-Clapeyron to relate vapor pressure to temperature. Full step-by-step working with energy diagrams
Free stoichiometry calculator with steps. Solve mole ratio, limiting reagent, theoretical yield, percent yield, and gram-to-gram word problems for any balanced chemical equation
Free atomic number calculator. Find protons, neutrons, and electrons for any element or isotope. Includes electron configuration, ion calculator, isotope tool, and mini periodic table with step-by-step working
Free exact mass calculator. Calculate monoisotopic mass from chemical formula, generate MS adduct m/z values [M+H]+, [M+Na]+, view isotope patterns, and compute isotope abundance and average atomic mass with step-by-step working.
Free buffer pH calculator using the Henderson-Hasselbalch equation. Solve for pH, pKa, or concentration ratio, generate buffer preparation protocols for phosphate, Tris, acetate, citrate & HEPES buffers, and calculate buffer capacity — with step-by-step working
Free Michaelis-Menten calculator — solve for Km, Vmax, velocity, and substrate concentration, generate Lineweaver-Burk plots from data, calculate kcat and catalytic efficiency, and model enzyme inhibition. Full step-by-step working
Free dilution factor calculator. Solve C1V1=C2V2 equations, calculate dilution ratios (1:10, 1:50), serial dilutions, and cell dilutions. Instant recipe box showing exactly how to prepare your solution
reaction order calculator solve zero order, first order, and second order integrated rate laws, calculate half-life, find rate constant k, and determine reaction order from experimental data with step-by-step working