ThermoCalc Web

Accurate Thermodynamic Data in Seconds — No Installation Required

Explore various thermodynamic values for molecules like CH4, O2, CO, H2O, and NH3.

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Instant Calculations
Enter a molecule and temperature, get results immediately.
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Validated Data
Benchmarked against NIST CCCBDB.
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Export Ready
Upgrade for CSV/PDF export.
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Education Friendly
Great for homework checks and lectures.
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Looking for methodology and benchmarks? See Methods & Validation.

About ThermoCalc Web

ThermoCalc Web is developed by a chemist with graduate-level training in thermodynamics. Methods are benchmarked against CCCBDB/NIST reference data, ensuring accuracy and transparency.