Molecular Lab Tools calculator
Bradford Assay Calculator
Calculate Bradford protein concentration from A595, blank correction, standard curve, and dilution factor. Use it for classroom work, protocol planning, and quick wet-lab checks before you verify final values independently.
Bradford concentration

Bradford Assay Calculator explained
This Bradford assay calculator uses a linear standard curve to convert A595 into protein concentration.
It subtracts the blank, applies the slope and intercept, then multiplies by dilution factor for the original sample.
The tool is useful when working with BSA standards and plate-reader absorbance values in the linear range.
The calculator handles empty fields, invalid numbers, and common input formatting mistakes. It gives a clear result and a short interpretation so users can decide what to check next. Students can use the page to learn the calculation logic. Lab workers can use it to reduce manual arithmetic errors. Researchers can use it as a first-pass planning aid before confirming the design with the relevant protocol, reagent datasheet, or analysis software.
For background reading, see this trusted reference: supporting educational source.
Bradford Assay Calculator worked example
Given A595 0.62, blank 0.05, slope 0.48, intercept 0.02, and dilution factor 5, the tool calculates the diluted sample concentration and original concentration.
The result should be treated as a planning estimate. Always verify critical lab calculations independently before using them in real experiments.
For related planning, you may also use the Protein Concentration Calculator or compare the next step with the BCA Assay Calculator.
Related tools
Practical questions about Bradford Assay Calculator
Can I use this result directly in an experiment?
Use the result as a careful planning estimate. Recheck important values with your protocol, instrument settings, and reagent documentation.
Why does the tool show warnings?
The warnings catch common mistakes such as missing required values, impossible negative values, unsuitable sequence characters, or values outside a typical screening range.
Does the tool replace experimental validation?
No. It supports calculation and screening, but final biological performance depends on the sample, assay, protocol, and experimental controls.