Tools & Calculators

First-Order vs Zero-Order Kinetics Tool Visualize and compare drug elimination kinetics models. Interactively plot first- and zero-order decay. … Read more

Beer-Lambert Law Absorbance Calculator | PharmacyFreak.com Beer-Lambert Law Absorbance Calculator Calculate absorbance (A) for spectrophotometry experiments using Beer-Lambert … Read more

Rf Value Calculator Calculate the Retention Factor (Rf) for TLC and other chromatography. Visualize the chromatogram and get … Read more

Chromatographic Resolution Calculator Calculate retention factor (Rf) and resolution (Rs) with step-by-step breakdown. For TLC, HPLC, and pharma … Read more

pH from pKa Calculator | PharmacyFreak pH from pKa Calculator Calculate pH using pKa and % ionization. Henderson-Hasselbalch … Read more

pKₐ to Kₐ Calculator Instantly convert a drug’s pKₐ value back to its acid dissociation constant (Kₐ). This … Read more

pH to pKₐ Calculator Determine the pKa of a drug by inputting its % ionization at a known … Read more

Kₐ to pKₐ Calculator Easily convert the acid dissociation constant (Kₐ) to its logarithmic pKₐ value. This tool … Read more

pKa Calculator | PharmacyFreak pKa Calculator Find the pKa of acidic or basic drugs using % ionization and … Read more

pKa & Ionization State Calculator Tool Calculate % ionized/unionized drug at any pH. Supports acids, bases, and up … Read more