Science & Physics Calculators

Molecular Mass (GMV Law)

This calculator helps you determine the molecular mass of a gas using the GMV Law. It’s especially useful in chemistry for comparing gas densities and estimating molecular weights. Simply enter the density of the gas and the density of hydrogen, and the calculator will compute the vapor density and molecular mass.

Ideal Gas Law

This Ideal Gas Law Calculator helps determine the relationship between pressure, volume, temperature, and the number of moles of a gas. It’s useful for students, chemists, and engineers to solve thermodynamic problems involving gases under ideal conditions. Simply enter the known variables to calculate the unknown using the equation PV = nRT.

Estimation of Calcium

This calculator helps estimate the percentage of calcium in a sample using titration with potassium permanganate (KMnO₄). It is useful for analytical chemistry, especially in agricultural, food, and pharmaceutical industries. By entering values such as the volume and normality of KMnO₄ and the sample weight, the calculator provides an accurate calcium percentage based on a standard titration formula.

Dalton’s Law

Dalton’s Law Calculator helps determine the total pressure of a gas mixture by summing the partial pressures of individual gases. It’s useful for chemistry students, lab technicians, and researchers working with gas laws. Simply input the number of moles, temperature, and volume to calculate the total pressure using Dalton’s Law.

Crude Protein

This Crude Protein Calculator helps determine the total protein content in a sample using the micro Kjeldahl distillation method. It is widely used in food, feed, and agricultural industries to estimate the nitrogen content, including from both protein and non-protein sources, and convert it into crude protein. Simply input the blank and actual titre values, NaOH normality, and sample weight to get accurate protein percentage results.

Crude Fibre

This calculator estimates the crude fibre content in feed or food samples using the standard gravimetric method. It is especially useful for chemists, food scientists, and agriculture professionals to determine the indigestible fibrous residue after acid and alkaline digestion. Just enter the weights before and after ashing, along with the sample weight, to get the crude fibre percentage.

Convert Atoms to Moles

This simple chemistry calculator helps convert between atoms and moles based on Avogadro’s number. It's useful for students, teachers, and professionals needing quick unit conversions in chemical calculations.

Combined Gas Law

The Combined Gas Law Calculator helps determine the missing parameter among pressure, volume, and temperature by applying the combined gas law, which merges Boyle’s, Charles’s, and Gay-Lussac’s laws. It’s especially useful in thermodynamics and chemistry to analyze gas behavior when multiple variables change. Simply input five known values to solve for the sixth.

Chemical Bond Polarity

Chemical Bond Polarity Calculator helps determine whether a covalent bond between two atoms is polar or non-polar. It uses the difference in electronegativity values to identify the type of bond formed. This tool is useful for chemistry students and professionals to understand electron sharing behavior in molecules and the tendency of atoms to attract electrons.

Charles’ Law Calculator

This calculator allows you to determine the relationship between the volume and temperature of a gas, according to Charles’ Law. It is useful for understanding how a gas expands or contracts with temperature at constant pressure.

C1V1 = C2V2 Dilution

This calculator uses the dilution equation C1V1 = C2V2 to determine the volume (V1) of a concentrated stock solution needed to prepare a diluted solution. Enter the stock concentration (C1), desired concentration (C2), and desired volume (V2) to find the required volume of the stock solution.

Boyle’s Law

This Boyle’s Law Calculator helps you determine the final pressure or volume of a gas when the other variables are known, assuming constant temperature. It’s useful in chemistry and physics for studying gas behavior under compression or expansion.

Beer–Lambert Law

Use this Beer–Lambert Law Calculator to compute light absorbance and transmittance of a solution based on its molar absorptivity, concentration, and path length. Ideal for students, chemists, and lab technicians, this tool simplifies spectrophotometric calculations using standard units.

Balancing Redox Reactions

A reaction in which a reducing agent loses electrons while it is oxidized and the oxidizing agent gains electrons while it is reduced is called a redox (oxidation-reduction) reaction. This calculator helps you balance unbalanced redox reactions, ensuring the conservation of mass and charge. It’s especially useful for students, chemists, and anyone studying electrochemical reactions.

Chemical Equation Balancer

The Chemical Equation Balancer helps quickly and accurately balance chemical equations. It is especially useful for chemistry students, teachers, and professionals who need reliable results for homework, experiments, or industrial processes. Enter your chemical equation into the input field, and the tool instantly computes the balanced form with correctly determined stoichiometric coefficients.

Avogadro’s Number via Density Formula

This calculator determines Avogadro’s number using measurable properties of a substance—atomic mass, density, and unit cell volume. Ideal for crystallography and solid-state chemistry, it lets you compute Avogadro’s constant from physical constants.

Atomic Mass

This calculator helps you determine the atomic mass of a chemical element or compound based on its isotopic composition and relative abundances. It’s particularly useful for students, chemists, and researchers working with molecular weights and stoichiometry. Simply input isotopes and their percentages, and the calculator will output the weighted average atomic mass.

Arrhenius Equation

The Arrhenius equation is fundamental in chemical kinetics and describes how reaction rates change with temperature. It shows the exponential effect of temperature on the rate constant. For example, reactions with higher activation energies are more sensitive to temperature changes. This calculator is ideal for estimating reaction behavior in experiments, industry, or academic study. Just make sure temperature is in Kelvin and activation energy in J/mol for correct results.

Acetate Buffer Composition

This Acetate Buffer Composition Calculator determines the required concentrations of acetic acid and sodium acetate to achieve a target pH and buffer strength. It uses the Henderson-Hasselbalch equation and provides results in %w/v, making it ideal for lab technicians, chemists, and students preparing buffer solutions.