Effective Charge Calculator
The Effective Charge Calculator computes effective nuclear charge for atomic orbitals using electron configurations and shielding constants, based on Slater’s rules.
Chemistry
Access our chemistry calculators to simplify complex chemical equations and conversions. From molar mass to reaction balancing and solution preparation, these tools help students, researchers, and professionals achieve accurate results with ease.
Browse our 70 calculators to solve common problems in Chemistry — from quick estimates to detailed results. This hub links to our most-used tools and guides so you can get answers fast.
Start with the popular picks below, or jump into the full list for more specific use cases.
Heat of Solution Calculator
The Heat of Solution Calculator computes the enthalpy of solution per mole using moles dissolved, specific heat capacity, mass, and temperature change.
Acentric Factor of Water Calculator
The Acentric Factor of Water Calculator calculates the Pitzer acentric factor for water using reduced temperature and vapour pressure data.
Faraday Constant Calculator
The Faraday Constant Calculator calculates charge from moles of electrons or time and current, using approximately 96485 coulombs per mole.
Fluid Osmolarity Calculator
The Fluid Osmolarity Calculator calculates solution osmolarity from solute concentrations and dissociation factors, with optional temperature correction and unit conversions.
Heat of Polymerization Calculator
The Heat of Polymerization Calculator calculates the enthalpy change of polymerisation from monomer heats of formation and conversion.
Heat of Dissolution Calculator
The Heat of Dissolution Calculator calculates the enthalpy change of solution from measured temperature change, masses, specific heat capacity, and moles.
Homebrew Water Adjustment Calculator
The Homebrew Water Adjustment Calculator calculates required salts and acids to reach target ion concentrations, hardness, alkalinity, and pH in brewing water.
Cation to Anion Ratio Converter
The Cation to Anion Ratio Converter converts Cation to Anion Ratio based on ion charges and concentrations in solution for straightforward comparisons.
Base Peak Relative Intensity Calculator
The Base Peak Relative Intensity Calculator computes normalised percentages for each m/z ion relative to the base peak in mass spectra.
Extraction Efficiency Calculator
The Extraction Efficiency Calculator computes predicted solute recovery from phase partitioning using distribution coefficients, phase volumes, and extraction stages.
Charles’s Law Calculator
The Charles’s Law Calculator computes final gas volume or temperature at constant pressure from initial state via direct proportionality.
Grams to Millimolar Converter
The Grams to Millimolar Converter converts Grams to Millimolar using molecular weight and solution volume to calculate concentration accurately.
Air Quality Index Calculator
The Air Quality Index Calculator computes AQI from measured pollutant concentrations, applying UK standards and indicating health categories and dominant pollutant.
Effectiveness Factor Calculator
The Effectiveness Factor Calculator computes intraparticle effectiveness factors from Thiele modulus, reaction order and pellet geometry for porous catalysts.
Combustion Temperature Calculator
The Combustion Temperature Calculator calculates adiabatic flame temperature from fuel and oxidiser composition, stoichiometry, and initial conditions.
Baffle Cut Percentage Calculator
The Baffle Cut Percentage Calculator calculates baffle cut percentage for shell-and-tube heat exchangers to optimise heat transfer and pressure drop.
g/mol to Molarity Converter
The g/mol to Molarity Converter converts g/mol to Molarity using solute mass and solution volume to determine concentration precisely.
Final Gas Pressure Calculator
The Final Gas Pressure Calculator computes final pressure in a closed system from initial state and changes in temperature, volume, and moles.
Acid Ionization Constant Calculator
The Acid Ionization Constant Calculator calculates acid ionisation constants and pKa from initial and equilibrium concentrations, pH, or degree of dissociation.