📊 Spectroscopy & Quantitation Calculators

Tools for spectrophotometric measurements, protein quantitation, and standard curve analysis.

Beer-Lambert Law Calculator

Solve A = εlc for absorbance, concentration, or path length.

A280 Protein Concentration

Calculate protein concentration from UV absorbance at 280 nm.

About Spectroscopy & Quantitation Calculators

Spectrophotometric measurements are among the most common quantitative techniques in any lab. These calculators handle the math behind absorbance-based concentration measurements, from the fundamental Beer-Lambert law to practical protein quantitation methods like A280 and Bradford assays.