Chemistry Tools
Free online tools for chemical calculations, analysis, and visualization.
Molar Mass Calculator
Calculate molecular weight of any compound
NMR Spectrum Predictor
Predict 1H and 13C NMR spectra from structure
Pressure Unit Converter
Convert between pressure units
SMILES To Structure Converter
Visualize molecules from SMILES notation
Spectroscopy File Converter
Convert SPC, JCAMP-DX, NMR files to CSV/Excel
Stoichiometry Calculator
Calculate reactant and product quantities
Vapor Pressure Calculator
Estimate vapor pressure using Antoine equation
Equation Balancer
Balance chemical equations automatically
pH Calculator
Calculate pH, pOH, and concentrations
Periodic Table
Interactive periodic table with element data
Drug-Likeness
Evaluate Lipinski and drug-likeness rules
Covalent
Draw and edit molecular structures in-browser
Signum
Analyze and annotate spectroscopy data