- Chemical LookupSearch more than 25,000 compounds by name, CAS number, formula, or molar mass and read the properties, NFPA diamond, and GHS classification.chemical lookupcas number lookupmolar mass search
- GHS Pictogram LookupPick GHS pictograms or hazard codes and see which chemicals carry them, with the official symbols.ghs pictogramsghs hazard symbolsh code lookupghs labels
- Molar Mass CalculatorWork out the molar mass, percent composition, and atom counts of any chemical formula.formula weightgram formula mass
- NFPA 704 Fire DiamondSearch chemicals by their NFPA 704 diamond, or look one up by name, and download the diamond as an SVG.nfpa 704fire diamondhazard diamondnfpa 704 lookup
- Periodic TableBrowse all 118 elements, color the table by a property trend, and read the detail for any element.periodic tableelement propertiesatomic mass tableperiodic trends
- Buffer CalculatorHenderson-Hasselbalch buffer pH and capacity from acid and conjugate base.buffer calculator
- Chemical Equation BalancerBalance any chemical equation automatically and show the working.
- Dilution CalculatorSolve C1V1 equals C2V2 for any missing concentration or volume.
- Electron Configuration ViewerAufbau order electron configuration and orbital diagram for any element.
- Empirical Formula CalculatorTurn mass percent composition into an empirical and molecular formula.
- Half-Life and Decay CalculatorRemaining quantity over time for any half-life, with a decay curve.
- Molarity and Solution PrepWork out moles, volume or concentration, with a step-by-step prep recipe.
- pH and pOH CalculatorConvert between pH, pOH, H+ and OH- concentration, including weak acids.ph calculatorpoh calculatorka pka calculator
- Stoichiometry CalculatorMole ratios, limiting reactant and theoretical yield from a balanced equation.
- Isotope Abundance LookupNatural isotopes, abundance percentages and atomic mass contribution for any element, with the average mass checked against the published standard.