Examples
Examples
Try the starting example
- Blank-corrected absorbance
- 0.8
- Optical path length (cm)
- 1
- Supplied molar extinction coefficient (L/mol/cm)
- 50000
- Protein molecular weight (g/mol)
- 50000
- Molar concentration (mol/L)
- 0.000016
- Mass concentration (mg/mL)
- 0.8
Try another scenario
- Blank-corrected absorbance
- 0.8800000000000001
- Optical path length (cm)
- 1
- Supplied molar extinction coefficient (L/mol/cm)
- 50000
- Protein molecular weight (g/mol)
- 50000
- Molar concentration (mol/L)
- 0.000018
- Mass concentration (mg/mL)
- 0.88
Calculation method
Calculation method
Molar concentration (mol/L)
Beer–Lambert c=A/(epsilon path).
Mass concentration (mg/mL)
Molar concentration×molecular weight; g/L equals mg/mL.
Symbols and units
- a
- Blank-corrected absorbance
- b
- Optical path length (cm)
- c
- Supplied molar extinction coefficient (L/mol/cm)
- d
- Protein molecular weight (g/mol)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Absorbance, path length, supplied coefficient. Returns Concentration under specified convention. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Blank-corrected absorbance: minimum 0, maximum 1000000000000.0. Optical path length (cm): minimum 1e-12, maximum 1000000000000.0. Supplied molar extinction coefficient (L/mol/cm): minimum 1e-12, maximum 1000000000000.0. Protein molecular weight (g/mol): minimum 1e-12, maximum 1000000000000.0.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.