Thermodynamics

Thermodynamics calculators

Steam tables, vapor pressure, ideal-gas, and compressor-power calculators for common process thermodynamics estimates.

When to use these calculators

Use these tools to estimate gas properties, vapor pressure, density, moles, mass, and compressor shaft power.

Typical workflow

1. Estimate vapor pressure from Antoine constants when phase behavior matters.
2. Use the ideal gas law for quick gas inventory, density, and mole estimates.
3. Estimate compressor power from mass flow, pressure ratio, gas properties, and efficiency.

Calculators

• Vapor Pressure (Antoine) Calculator — Saturation pressure of a pure component from Antoine coefficients. Pick a preset or enter your own A, B, C.
• Ideal Gas Law Calculator — Moles, mass, and density of an ideal gas from P, V, and T.
• Gas Compressor Power Calculator — Single-stage adiabatic compression power, head, and discharge temperature for an ideal gas.
• Steam Tables (IAPWS-IF97) Calculator — Saturated and single-phase water/steam properties — saturation pressure/temperature, enthalpy, entropy, and specific volume — from the IAPWS-IF97 standard.

Other engineering domains

• Fluid Mechanics
• Heat Transfer
• Process Safety