Beer-Lambert Law Calculator

Calculate absorbance, concentration, pathlength, or molar absorptivity using A = εcl. Features concentration units (M, mM, μM, nM, pM), pathlength units (cm, mm, m), wavelength units (nm, μm, mm), common compounds (NADH ε=6220 at 340nm, BSA ε=43800 at 280nm, Chlorophyll a ε=84000 at 665nm, etc.), DNA/RNA concentration estimation (dsDNA: 50 μg/mL = 1 AU), transmittance calculation (T = 10⁻ᴬ), and Beer-Lambert linearity check (A ≤ 2.0). Perfect for analytical chemistry, biochemistry, and spectroscopy students.