Free tools · Pharma QC and CMC

Pharma Lab Calculators

20 calculators and 3 lab simulators for routine QC, dissolution, method validation, CMC and cleaning validation. Paste your raw data from Excel and get the result, the pass/fail verdict, every calculation step and a printable report.

  • Free, no sign-up
  • ICH, USP and Ph. Eur. based
  • Every step shown
  • Data stays in your browser
Routine QCVirtual HPLC

Run a reversed-phase separation, watch the bands separate inside the column and get the system suitability verdict.

  • Simulator
  • Chromatogram
  • 8 faults
  • USP <621>
Open simulator →
Routine QCSystem Suitability

Replicate %RSD, retention time, tailing, plates, resolution and S/N with automatic pass/fail.

  • %RSD
  • Tailing
  • Plates
  • USP <621>
Open calculator →
Routine QCStandard Check

Agreement of two independently weighed standards, corrected for weight and dilution.

  • Std 1 vs Std 2
  • %RSD
  • 98–102%
Open calculator →
Routine QCDilution Factor

Multi-step dilution schemes, final concentrations and the assay factor.

  • Multi-step
  • Concentration
  • Assay factor
Open calculator →
Routine QCAssay and Repeatability

mg/unit and % label claim per sample, mean and repeatability %RSD.

  • % LC
  • Repeatability
  • mg/unit
Open calculator →
DissolutionVirtual Dissolution Lab

Run a six-vessel USP apparatus, introduce real bench faults and see the profile and stage verdict change.

  • Simulator
  • Apparatus 1 & 2
  • 8 faults
  • Training
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DissolutionDissolution

% dissolved per unit with the USP <711> S1, S2 and S3 verdict.

  • USP <711>
  • Stages
  • Q value
Open calculator →
DissolutionDissolution Profile

Multi-point profiles corrected for medium withdrawn at each pull.

  • Profile
  • Volume correction
Open calculator →
Dissolutionf2 Similarity

Comparative dissolution with f2 and f1 under FDA or EMA rules.

  • f2
  • f1
  • FDA
  • EMA
Open calculator →
Method validationLinearity

Regression, r, R², residuals and y-intercept with a chart.

  • r / R²
  • Slope
  • Residuals
Open calculator →
Method validationAccuracy (Recovery)

% recovery per preparation, per level and overall.

  • % Recovery
  • 3 levels
  • %RSD
Open calculator →
Method validationIntermediate Precision

Two analysts, days or labs: set %RSD, combined %RSD, difference.

  • Combined %RSD
  • Ruggedness
Open calculator →
Method validationLOD and LOQ

LOD and LOQ from the calibration curve, plus S/N.

  • 3.3σ/S
  • 10σ/S
  • S/N
Open calculator →
Method validationSolution Stability

How long standard and sample solutions stay within limits.

  • % Difference
  • Hours
Open calculator →
Method validationRobustness

Deliberate method variations against the nominal result.

  • Flow
  • Temperature
  • pH
Open calculator →
Method validationSpecificity

Interference from blank, placebo and impurities, and resolution.

  • Blank
  • Placebo
  • Resolution
Open calculator →
Method validationForced Degradation

% degradation and mass balance for each stress condition.

  • Stress
  • Mass balance
Open calculator →
CMCImpurity Threshold

ICH Q3A/Q3B thresholds and classification of batch results.

  • Q3A
  • Q3B
  • Specification
Open calculator →
CMCVirtual Stability Study

Store batches at ICH conditions, test the packaging, and get the significant change assessment and the Q1E shelf life.

  • Simulator
  • ICH Q1A
  • Q1E
  • 6 faults
Open simulator →
CMCShelf Life (ICH Q1E)

Batch poolability, regression with 95% bounds and the Q1E extrapolation limit.

  • Q1E
  • ANCOVA
  • Extrapolation
Open calculator →
CMCElemental Impurities (ICH Q3D)

ICH Q3D PDEs, permitted concentrations and the 30% control threshold.

  • Q3D
  • PDE
  • 24 elements
Open calculator →
CMCNitrosamine Limits

CPCA potency category, acceptable intake and ppm limit for NDSRIs.

  • CPCA
  • NDSRI
  • AI
  • ppm
Open calculator →
Cleaning validationCleaning Validation Limits

MACO by HBEL, dose and 10 ppm, with swab and rinse limits.

  • MACO
  • HBEL
  • Swab
  • Rinse
Open calculator →
Why these calculators

Built for the bench and the audit

Paste from Excel

Copy a block of cells and paste it into any table. Rows are added for you.

Every step shown

Each result comes with the formula and the numbers used, so you can check it or copy it into your notebook.

Pass or fail at a glance

Set your own acceptance criteria, or keep the common defaults from ICH, USP and Ph. Eur.

Print-ready reports

Add product, batch and analyst, then print or save a clean PDF report.

These calculators are decision support for orientation and training. They are not validated GMP software, and results must be checked against your approved method, SOP and the current pharmacopoeia or guideline before use in GMP records. Your data is processed in your browser and is not sent to Molgenium.