What is the Assay Percentage Calculator?
Calculate assay percentage relative to a stated reference amount or concentration. ITS Research Solution keeps the interactive tool above the explanation so you can calculate first and then review the method used.
Formula or method
Assay % = measured value / reference value × 100%.
How to use this tool
Enter the requested values using consistent units, run the calculation and review the main result plus any supporting values. Measured 99.2 against reference 100 gives 99.2%.
Interpretation and limitations
Compendial assay calculations may require potency, dilution, purity, moisture and molecular-weight corrections not represented by this simple ratio. Always check source data, units, rounding and discipline-specific requirements before using a result in assessed, published, regulated or high-stakes work.
Frequently asked questions
How is this result calculated?
Assay % = measured value / reference value u00d7 100%.
Can I use this result in formal academic or research work?
Use it as a transparent calculation aid, then verify the assumptions, units, rounding and any institution-, journal- or field-specific requirements before formal use.