Chemical Calculators

MiniWebtool’s Beer-Lambert Law Calculator solves A = εlc for absorbance, molar absorptivity, path length, or concentration. Enter the other three quantities to see the result, percent transmittance, and a calibration-line visualization.

Enter molality or solute mass, molar mass and solvent mass in MiniWebtool’s Boiling Point Elevation Calculator to find a solution’s boiling point rise. Set the solvent and van't Hoff factor to see the new boiling point.

Balance atoms across a reaction in MiniWebtool’s Chemical Equation Balancer. An unbalanced equation is converted to smallest whole-number coefficients, with algebraic steps and an element-by-element check of conservation.

Estimate albumin-adjusted calcium with MiniWebtool’s Corrected Calcium Calculator. Measured calcium, albumin, units, and the selected formula produce a corrected value with worked steps; this calculation does not directly measure ionized calcium.

MiniWebtool’s Corrected Sodium Calculator estimates how measured sodium changes after accounting for elevated glucose. Supply serum sodium and glucose, select the correction formula, and inspect the adjusted value and clinical context.

MiniWebtool’s Dilution Calculator applies C₁V₁ = C₂V₂ to a stock solution and its dilution. Supply the known concentrations and volumes to solve the missing quantity and follow the preparation calculation.

MiniWebtool’s Electron Configuration Calculator arranges electrons for an element or ion. Full and noble-gas notation, orbital boxes, spin arrows, and unpaired-electron counts connect the configuration to filling order and magnetic classification.

Derive a compound’s simplest atomic ratio in MiniWebtool’s Empirical Formula Calculator. Element mass percentages or measured masses are converted to mole ratios, with an optional molar mass allowing a molecular formula calculation.

MiniWebtool’s Freezing Point Depression Calculator applies ΔTf = iKfm to calculate a solution’s freezing-point drop and resulting freezing point. Choose a solvent preset, supply molality, and set the van’t Hoff factor to account for dissolved-particle concentration.

Explore the balance between a weak acid and its conjugate base. MiniWebtool’s Henderson-Hasselbalch Calculator finds buffer pH, the ratio needed for a target pH, or pKa from a measured pH, with calculation steps.

Search by name, symbol or number in MiniWebtool’s Interactive Periodic Table, or recolor all 118 elements by a property such as radius, density or electronegativity, then open one element’s data.

Determine which reactant is exhausted first using MiniWebtool’s Limiting Reactant Calculator. A balanced equation and reactant quantities in grams or moles produce the limiting reactant, excess remaining, and theoretical product yield.

Molality measures solute moles per kilogram of solvent. MiniWebtool’s Molality Calculator accepts moles or solute mass and molar mass, then connects the result with illustrative freezing-point depression and boiling-point elevation calculations.

Break a chemical formula into its elemental contributions using MiniWebtool’s Molar Mass Calculator. Enter a formula such as H2O or Ca(OH)2 to see the total in g/mol and the atomic-mass calculation behind it.

MiniWebtool’s Molarity Calculator solves for concentration, solute mass, or solution volume from the known quantities. A dilution mode relates initial and final molarity and volume for planning a concentration change.

Move between amount of substance, mass, and particle count with MiniWebtool’s Mole/Gram/Particle Converter. The chosen substance, molar mass, and input quantity produce equivalent values with formulas explaining each conversion.

Examine cell potential away from standard conditions using MiniWebtool’s Nernst Equation Calculator. Standard potential, temperature, electron count, and reaction quotient determine voltage, with related Gibbs free-energy and equilibrium-constant calculations.

MiniWebtool’s Normality Calculator calculates a solution’s normality from equivalents and volume, or straight from grams using molar mass and n-factor. Convert between normality and molarity through the equivalence factor, with n-factor presets for common acids.

MiniWebtool’s Osmotic Pressure Calculator uses π = iMRT and provides an osmolarity comparison in mOsm/L.

Find each element’s share of a compound’s mass with MiniWebtool’s Percent Composition Calculator. Chemical formulas, including supported hydrates, yield molar mass and elemental percentages, with a comparison against atom-count proportions.

Enter actual yield and theoretical yield, or leave one unknown, in MiniWebtool’s Percent Yield Calculator to get the percent yield of a reaction.

MiniWebtool’s pH Calculator converts hydrogen-ion concentration or pOH into pH. Scientific-notation inputs, a pH-scale display, and worked logarithm steps help connect the numerical concentration with acidity or alkalinity.

MiniWebtool’s pKa to Ka Converter connects acid and base equilibrium constants for a conjugate pair. Enter pKa, Ka, pKb, or Kb and set pKw, using 14.00 at 25°C by default, to calculate the other values.

MiniWebtool’s Stoichiometry Calculator uses a balanced reaction’s molar ratios to convert among moles, mass, and supported volume quantities. Follow the equation-based working from a known reactant or product amount.

Find the reactant that limits a reaction with MiniWebtool’s Theoretical Yield Calculator. Supply a balanced equation and reactant quantities to calculate the maximum modeled amount of a selected product.

MiniWebtool’s Titration Calculator uses titrant and analyte quantities to solve a missing concentration or volume. Review the stoichiometric steps, equivalence-point pH estimate, and indicator suggestions for the selected acid–base setup.