Beer–Lambert Law Calculator
Absorbance, transmittance, molar absorptivity, path length or concentration from A = εlc.
How to use the Beer–Lambert Law Calculator
- Fill in what you know of: Absorbance A, Molar absorptivity ε, Path length l, Concentration c — leave the unknown empty.
- The results (Absorbance, ε, Path length, Concentration, Transmittance) are calculated instantly as you type.
- Use “Copy link” to share the calculation with the same input values.
Formula
- A = ε · l · c
- T = 10^(−A)