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
Free reaction order calculator solve zero order and first order kinetics equations, calculate half-life, determine reaction order from data. Includes integrated rate law solver and graphs.
partial pressure calculator use Dalton’s Law and mole fraction to find partial pressure of any gas. Includes ideal gas law method, gas mixture analyzer, and pressure unit converter.
find the percent composition by mass of any compound from its chemical formula or mass data. Step-by-step working with examples and practice problems.
Free empirical formula calculator – find the empirical and molecular formula from percent composition or element masses. Step-by-step working with examples for every calculation.
Free limiting reactant calculator – identify the limiting reagent and excess reactant from any chemical equation. Full step-by-step working, mole calculations, and practice problems included.