Free online tools for chemical calculations, analysis, and visualization.
Calculate molecular weight of any compound
Calculate reactant and product quantities
Calculate pH, pOH, and concentrations
Estimate vapor pressure using Antoine equation
Balance chemical equations automatically
Predict 1H and 13C NMR spectra from structure
Evaluate Lipinski and drug-likeness rules
Visualize molecules from SMILES notation
Convert SPC, JCAMP-DX, NMR files to CSV/Excel
Convert between pressure units
Interactive periodic table with element data
Draw and edit molecular structures in-browser
Analyze and annotate spectroscopy data
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