Organic Chemistry Calculators & Converters
Solve reaction problems faster - and actually understand the chemistry behind them.
¹H NMR Spectrum Helper
Parse ¹H NMR peaks, simulate a spectrum, and get splitting + integration hints
Activation Energy Calculator
Compute Eₐ or k₂ using the Arrhenius equation with steps
Actual Yield Calculator
Find actual, percent, or theoretical yield with unit conversion
Arrhenius Equation Calculator
Calculate k, activation energy, or k₂—clear steps and plot included
Beer-Lambert Law Calculator
Calculate absorbance, concentration, path length, or molar absorptivity
Buffer Preparation Calculator
Generate lab-ready buffer recipes from target pH and volume.
Cube Volume Calculator
Instant cube volume from edge or diagonal, with unit conversion.
Degree of Unsaturation / Double Bond Equivalent Calculator
Instant DBE calculator for rings and π bonds in molecules
DNA Concentration Calculator
Calculate DNA concentration from A260 or convert ng/µL and nM
Empirical Formula Calculator
Calculate empirical formulas from mass or percent composition with steps
Enantiomeric Excess (ee) Calculator
Calculate enantiomeric excess from R/S %, chiral peak areas, or optical rotation
Entropy Calculator
Calculate entropy changes for gases, heating, and phase changes
Equilibrium ICE-Table Calculator
Calculate chemical equilibrium using ICE tables, Q vs K, and steps
Isoelectric Point (pI) Calculator
Compute protein or amino acid pI from pKa values with clear steps
pH Calculator
Calculate pH, pOH, or ratios for acids and bases
pKa Calculator
Convert Ka↔pKa and gauge acid strength instantly
Protein Concentration Calculator
Calculate protein concentration via A280, standard curves, and dilutions.
Protein Molecular Weight Calculator
Calculate protein MW from FASTA or raw sequence, plus mass↔moles conversion
Protein Solubility Calculator
Estimate protein solubility and aggregation risk from pH, pI, salt, and temperature
R/S & E/Z Configuration Calculator
Determine R/S and E/Z stereochemistry using CIP priorities and inversion rules