Full-screen app interface screenshot showing a vapor pressure versus temperature plot for a single chemical compound, clean axis labels, crisp line curve on a white background, UI chrome minimal and precise, no decorative elements
Full-screen app interface screenshot showing a vapor pressure versus temperature plot for a single chemical compound, clean axis labels, crisp line curve on a white background, UI chrome minimal and precise, no decorative elements
— Vapor Pressure Calculator

Thermodynamically accurate phase data. One tool.

Compound-specific vapor pressure plots across your full temperature range. No black-box estimators. If the data isn't in the database, the app tells you.

Close-up screenshot of VaporCalc input panel showing compound selector dropdown and temperature range fields, clean UI on white background, neutral studio lighting, precise typography, no decorative elements
Close-up screenshot of VaporCalc input panel showing compound selector dropdown and temperature range fields, clean UI on white background, neutral studio lighting, precise typography, no decorative elements

1,200+ Compounds

First-Principles Only

One License, No Subscription

Curated thermodynamic database covering common industrial and laboratory compounds, each with validated Antoine and Wagner coefficients.

Every curve derives from peer-reviewed thermodynamic correlations. No interpolation fill-ins, no silent fallbacks. Limits are stated, not hidden.

Buy once, run offline. No enterprise procurement, no usage caps, no renewal notices. Your data stays on your machine.

/ Repeatable. Compound-specific.

Plots you can cite, not estimates you have to verify

Select a compound, set your temperature bounds, export the curve. The calculation path is fully traceable to its source coefficients—no mystery, no magic.

Run your compounds. Decide if it fits your work.

Download the app, load your compounds, and get accurate phase data within minutes. No account required.