PharmainformCalc — Precision Pharmaceutical Calculators

Free online calculators for pharmaceutical batch size, tablet weight, coating material, API requirement, bulk & tapped density, percentage yield, unit conversion, and batch reconciliation. Brought to you by Pharmainform.

Calculators

• Batch Size — Scale target quantities into total batch weight, API load, and excipient weight.
• Tablet Weight — Back-calculate tablet weight and a fully custom excipient breakdown from API dose and %w/w.
• Coating Material — Work out dry coating, suspension volume, and vehicle needed for a target weight gain.
• API Requirement — Correct label-claim API demand for overage and raw-material assay to get a gross weigh-out.
• Bulk & Tapped Density — Get Carr's Index and Hausner ratio to assess powder flow from bulk and tapped volumes.
• % Yield — Compare actual output against theoretical output to get percentage yield and process loss.
• Unit Converter — Convert between nanograms, micrograms, milligrams, grams, kilograms, pounds, and ounces.
• Granulation Reconciliation — Reconcile theoretical vs. actual powder or granule weight after granulation and drying.
• Compression Reconciliation — Reconcile granules or powder fed to the press against compressed tablets obtained.
• Coating Reconciliation — Reconcile core tablets against coated tablets obtained, on a tablet-count basis.
• Encapsulation Reconciliation — Reconcile fill material against filled capsules obtained, on a capsule-count basis.

Articles

• Batch Reconciliation Explained — Where manufacturers actually lose material, stage by stage.
• API Overage: How Much Is Too Much? — A practical guide by dosage form.
• Carr's Index & Hausner Ratio Explained — What powder flow numbers actually mean, with USP, Ph. Eur., BP, and ICH references.
• Coating Weight Gain Troubleshooting — Why actual weight gain doesn't match theoretical, and how to narrow down the cause.
• How to Investigate a Batch Reconciliation Failure — A step-by-step process, not just the math.
• Understanding Yield Loss Points Across Stages — Where tablets actually go missing, from granulation through packing.

For reference and educational purposes only. Verify all calculations against your organization's validated SOPs before use in production. See our About, Contact, Terms of Use, and Privacy Policy pages.