Titration, Beer-Lambert law, and analytical chemistry calculators. Browse our free analytical tools below — all calculators are instant, accurate, and require no sign-up.
Beer-Lambert Law Calculator — Calculate absorbance, transmittance, molar absorptivity, concentration, and path length using the Beer-Lambert law for spectrophotometry.
Calibration Curve Calculator — Build a calibration curve from standard data, perform linear regression, and determine unknown concentrations with R² and confidence intervals.
Chemical Oxygen Demand Calculator — Calculate COD from titration data, estimate organic load, convert between COD/BOD/TOC, and assess wastewater treatment requirements.
Crude Protein Calculator — Calculate crude protein content from Kjeldahl nitrogen analysis with conversion factors for different food types and feed ingredients.