Steam Tables

Steam Tables is an engineering reference and calculation app for the thermodynamic properties of water and steam, based on the IAPWS-IF97 formulation. Explore water and steam states, build property tables and inspect interactive thermodynamic diagrams. INPUT COMBINATIONS • Pressure + temperature • Pressure + steam quality • Pressure + specific volume • Pressure + enthalpy • Pressure + entropy • Pressure + internal energy • Temperature + steam quality • Temperature + specific volume • Temperature + enthalpy • Temperature + entropy • Temperature + internal energy Pressure can be entered as gauge or absolute pressure. 34 CALCULATED PROPERTIES • Temperature • pressure • gauge pressure • specific volume • density • enthalpy • entropy • internal energy • specific heat at constant pressure • specific heat at constant volume • speed of sound • steam quality • compressibility factor • Gibbs free energy • Helmholtz free energy • Joule–Thomson coefficient • isothermal Joule–Thomson coefficient • isentropic exponent • isobaric cubic expansion coefficient • isothermal compressibility coefficient • relative pressure coefficient • isothermal stress coefficient • (∂v/∂T)p • (∂v/∂p)T • (∂p/∂T)v • (∂p/∂v)T • dynamic viscosity • kinematic viscosity • thermal conductivity • thermal diffusivity • dielectric constant • surface tension • Prandtl number • refractive index RESULTS AND UNITS Choose which properties appear in the results table and arrange their order. Select preferred units from a wide range of conversions. MORE TO EXPLORE • Saturation calculations and thermodynamic state comparisons. • Interactive p–h, T–s, h–s, p–v and p–T diagrams, including graphical exploration. • Custom property tables, saved states and reference literature. • Configurable colors, light/dark appearance and options to share results. Calculations use the IAPWS-IF97 formulation for water and steam, with supplementary models for applicable transport and other properties. Available results and valid input combinations depend on the thermodynamic region. Verify safety-critical and engineering design results independently.