Bill of Materials & Batch Composition Calculator

Bill of Materials & Batch Composition Calculator – Tablets

Purpose: This calculator helps plan and calculate tablet batch composition, accounting for all parts of the formulation, API assay correction, and excipient adjustments. It generates a detailed batch composition table ready for review, printing, or export.
Enter the Product Name for identification and print records.
Enter the Batch Size (total number of tablets to be manufactured). Only whole numbers are allowed.
Add Ingredients for Each Part of the Formulation:
- Intra-granular / Dry Mix Part: Required for wet or dry granulation processes (as applicable). For direct compression, do not enter details in this part.
- Binder Part: Required for wet granulation processes. For direct compression, do not enter details in this part.
- Blending Part: Required for wet or dry granulation processes (as applicable). For direct compression, enter details here as applicable.
- Lubrication Part: Required for wet granulation, dry granulation, or direct compression processes as applicable.
- Coating Part: Required only for coated tablets, if applicable.
Select Type = API for any active pharmaceutical ingredient (API). This is mandatory.
Enter Assay % for API rows in the Assay % column. The calculator will automatically adjust the dose using the formula: Corrected mg/tab = (Entered mg/tab × 100) ÷ Assay %.
The Corrected mg/tab column shows the adjusted quantity per tablet after correcting for API assay.
Tick Compensating Agent Eligible if an excipient can adjust for API assay differences (e.g., Lactose, MCC). Normally, only one excipient should be marked; the calculator adjusts the first eligible ingredient automatically.
Use Mark Evaporates only for water or solvents that evaporate during processing and do not remain in the final tablet. Applicable only in the Binder or Coating parts.
Click Calculate & Show Table to generate the full batch composition table.
Use Export to save as CSV/Excel or Print to generate a report. Always check the printed/exported report for correctness.

Product Name *

Batch Size (Nos. of Tablets) *

Output Decimals

Disclaimer: The results provided by this calculator are for general informational purposes only. Users are responsible for verifying all calculations and ensuring suitability for their own formulation, manufacturing, or regulatory needs. Cakk Magg X Pharmaceutical Services makes no warranties regarding accuracy or applicability and disclaims any liability for use or reliance on the results.

Explore More Calculators: Access additional pharmaceutical calculators designed to support formulation development, batch planning, and manufacturing operations. Use the button below to navigate to the Pharmaceutical Calculators page.

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