Chemistry Calculators
Perform molecular calculations, balance chemical equations, and analyze reaction kinetics. Calculate stoichiometry and solution concentrations.
All Chemistry calculators
19 tools, sorted alphabetically
Average atomic mass calculator
Calculate average atomic mass from isotope masses and percent abundances. Check the abundance total, find each isotope contribution, and see the weighted average in amu.
Buffer Solution Calculator
Calculate buffer pH with the Henderson-Hasselbalch equation from pKa and acid/base amounts, and solve target base-to-acid ratios for lab planning.
C1V1 = C2V2 Calculator
Solve C1V1 = C2V2 dilution problems for initial concentration, stock volume, final concentration, or final volume with clear unit labels and formula steps.
Dilution Calculator for C1V1 = C2V2
Dilution Calculator for C1V1 = C2V2: solve stock volume, final concentration, final volume, dilution factor, and 1:2 or 1:10 lab dilutions.
Electron Configuration Calculator
Find electron configurations for elements by atomic number. See orbital filling order, noble gas notation, valence electrons, and chemistry patterns.
Empirical Formula Calculator
Find the empirical formula from percent composition or mass data. Converts each element to moles, reduces the mole ratio, and shows every step and multiplier.
Equilibrium Constants Calculator
Calculate an equilibrium constant expression from reactant and product concentrations and their stoichiometric coefficients.
Gas Laws Calculator
Apply gas laws to compute properties of gases. Calculate pressure, volume, temperature, and moles using Boyle's, Charles', and the Ideal Gas Law relationships.
Limiting Reagent Calculator
Find the limiting reagent from two reactants and one product using balanced-equation coefficients, molar masses, and mole or mass amounts, with product yield and excess left over.
Molar Mass Calculator
Calculate the molar mass of compounds from chemical formulas. Determine molecular weight for stoichiometric calculations and solution preparation in chemistry.
Molarity Calculator
Calculate molarity, required solute mass, final volume, and dilution values with clear units for chemistry labs and solution prep.
Molarity from Mass Calculator
Convert grams of solute into molarity, or solve for mass, volume, or molar mass. A unit-aware mass-to-molarity tool with a molar mass preset library.
Percent Solution Calculator (w/v, v/v, w/w)
Calculate percent solution concentration, required solute, or total solution amount for w/v, v/v, and w/w modes with clear unit handling and worked examples.
Percent Yield Calculator
Calculate percent yield from actual yield and theoretical yield, with yield loss, interpretation, and a clear formula substitution for chemistry labs.
pH Calculator
Calculate pH, pOH, hydrogen ion concentration, or hydroxide ion concentration for acid-base chemistry work and lab checks.
Reaction Rate Calculator
Calculate reaction rates from concentration changes and elapsed time for chemistry homework, lab notes, and kinetics checks.
Serial Dilution Calculator
Calculate serial dilution final concentration, cumulative dilution factor, and step-by-step tube concentrations from a starting concentration and per-step dilution.
Stoichiometry Calculator
Use stoichiometry to calculate reactant and product quantities. Analyze molar ratios and limiting reagents in chemical reactions.
Titration Calculator
Calculate solution concentrations and equivalence points. Analyze acid-base reactions, determine molarity, and plan laboratory titration procedures.