Science & Lab Tools Calculators

Calculate activation energy (Ea) using the Arrhenius equation

Calculate activity coefficients for non-ideal solutions

Calculate actual yield, percent yield, and reaction efficiency

Calculate optimal air-fuel ratios for combustion engines

Calculate mixing ratios for solutions of different concentrations

Calculate primer annealing temperatures

Calculate atom economy (atom efficiency) of chemical reactions

Calculate atomic mass and molecular weight from isotope data

Calculate bacterial growth rates

Calculate proper bleach dilution ratios for disinfection and cleaning purposes

Calculate boiling point of water at different altitudes

Calculate how dissolved solutes increase the boiling point of a solution

Calculate bond order to determine chemical bond strength and stability

Calculate British Thermal Units (BTU) for heating and cooling requirements

Calculate buffer capacity and buffering range

Calculate age of organic materials using carbon-14 dating

Calculate cell culture dilutions

Calculate COD values for water quality assessment

Calculate molecular composition and empirical formula from combustion analysis data

Balance combustion reactions and calculate products

Calculate crude protein content in food and feed samples using nitrogen content

Calculate parameters for cubic crystal unit cells

Calculate the number of rings and double bonds in organic molecules from their molecular formula

Calculate the density of any substance using mass and volume

Calculate detention time for water treatment processes

Calculate the temperature at which water vapor in the air begins to condense

Calculate diffusion coefficients for mass transfer processes

Calculate dilution factors and solution concentrations

Calculate DNA concentration from absorbance readings

Calculate DNA copy numbers

Calculate the number of rings and double bonds in organic molecules using the DBE formula

Calculate effective nuclear charge using Slater's rules

Calculate electricity consumption, cost, and energy usage for appliances and devices

Calculate mass of deposited material, time required, and current needed for electrolysis reactions

Calculate the electromotive force of electrochemical cells and determine reaction spontaneity using standard reduction potentials

Calculate electronegativity values using Pauling, Mulliken, and Allred-Rochow methods

Calculate entropy changes in thermodynamic processes

Calculate enzyme activity based on reaction rate, enzyme concentration, and reaction time.

Calculate how dissolved solutes decrease the freezing point of a solution

Calculate gas diffusion rates using Graham's law of effusion

Calculate half-life and decay rates for radioactive substances, biological compounds, and chemical reactions

Calculate the 'feels-like' temperature based on air temperature and humidity

Calculate pH of buffer solutions using Henderson-Hasselbalch equation

Calculate hydraulic retention time for water treatment systems

Calculate the ionic strength of solutions by entering ion concentrations and charges

Calculate the pH at which a molecule carries no net electrical charge using pKa values

Calculate equilibrium constant Kp for gas-phase reactions

Calculate adsorption equilibrium parameters using the Langmuir isotherm model

Calculate lattice energy using the Born-Landé equation

Calculate DNA ligation ratios

Calculate microbial log reductions

Convert mass between different units including grams, kilograms, pounds, ounces, and more

Calculate the mass percent of a solution from solute and solvent masses.

Calculate reaction velocity, Vmax, Km, or substrate concentration in enzyme kinetics.

Calculate Miller indices for crystallographic planes and directions in crystal structures

Calculate Mixed Liquor Volatile Suspended Solids

Calculate the molarity (molar concentration) of a solution

Calculate mole fractions in chemical mixtures

Calculate the molecular weight (molar mass) of any chemical compound

Calculate cell potential under non-standard conditions using the Nernst equation

Calculate volumes and concentrations for acid-base neutralization reactions

Calculate solution normality using concentration and equivalence factor

Calculate voltage, current, resistance, and power in electrical circuits using Ohm's Law

Calculate osmotic pressure using van't Hoff equation based on concentration, temperature, and van't Hoff factor

Calculate the mass percentage of each element in a chemical compound

Calculate the ionic character percentage of chemical bonds using electronegativity values

Calculate solution concentrations as weight/volume, weight/weight, or volume/volume percentages

Calculate the degrees of freedom in a chemical system using the Gibbs Phase Rule

Calculate acid dissociation constant (pKa) and understand acid strength

Calculate protein concentration using various assay methods

Calculate protein molecular weight from amino acid sequence

Calculate PCR amplification efficiency from real-time PCR data

Calculate resistor values using color codes and find the right resistor for your circuit

Calculate superoxide dismutase enzyme activity

Calculate and convert between different standard temperature and pressure conditions for gases

Calculate Total Dissolved Solids (TDS) from conductivity measurements in water samples

Calculate two-photon absorption cross-sections and related parameters for nonlinear optical materials

Calculate voltage drop in electrical circuits based on wire properties and conditions

Calculate wastewater treatment parameters and design criteria

Calculate water hardness in different units (ppm, gpg, °dH, °e, °fH) based on calcium and magnesium ion concentrations

Calculate water potential in plant cells and soil systems

Convert weight between different units including kilograms, pounds, stones, ounces, and more

Calculate how cold it actually feels outside by factoring in wind speed and air temperature

Calculate surface tension and pressure difference across fluid interfaces