Steam
Steam properties calculator
$4.99 · Designed for iPad. Not verified for macOS.
Steam calculates the thermodynamic and transport properties of water and steam for subcooled (compressed liquid), saturated, two-phase (wet steam), superheated, and supercritical conditions. Use Steam in the field and in the classroom to replace tedious interpolation of steam properties from printed steam tables.
Steam includes both the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam (IF97) and the 1967 IFC-Formulation for Industrial Use (IFC-67) for property calculations. Although the 1997 formulation has been available for almost 30 years, the 1967 formulation is still used in some industries.
Save calculations to review later or to compare differences between the 1997 and 1967 formulations.
Switch instantly between imperial (psia, F, Btu/lbm, etc.) or metric (kPa, C, kJ/kg, etc.) engineering units. Customize those sets of units for your needs. With just one tap, convert calculated outputs from one set of units to the other. A third set of units can be defined, and a units conversion calculator is also provided.
The allowable range of input values will be displayed when the inputs are out of range.
On the settings tab, change the number of significant digits in the output, customize the engineering units, modify the font size, and select the theme for the app.
Select one of the functions with these inputs:
p,t - pressure and temperature
p,h - pressure and specific enthalpy
p,s - pressure and specific entropy
h,s - specific enthalpy and specific entropy
p,x - pressure and steam quality (vapor fraction)
t,x - temperature and steam quality (vapor fraction)
to calculate:
- Specific enthalpy
- Specific entropy
- Specific internal energy
- Specific volume
- Density
- Specific isobaric heat capacity
- Specific isochoric heat capacity
- Isentropic exponent
- Speed of sound
- Thermal conductivity
- Dynamic viscosity
- Kinetic viscosity
- Prandtl number
- Surface tension
For saturated and two-phase (wet steam) conditions:
- Saturation temperature
- Saturation pressure
- Saturated liquid, saturated vapor, and two-phase properties
- Specific enthalpy
- Specific enthalpy heat of vaporization
- Specific entropy
- Specific entropy of vaporization
- Specific internal energy
- Specific volume
- Density
For saturated liquid and saturated vapor conditions:
- Specific isobaric heat capacity
- Specific isochoric heat capacity
- Isentropic exponent
- Speed of sound
- Thermal conductivity
- Dynamic viscosity
- Kinetic viscosity
- Prandtl number
- Updated to IOS 26 using SwiftUI
- Added option to save calculations so you can compare results from multiple calculations
- Added a custom engineering units set, and made all the engineering units sets customizable for your application
- Added settings for significant digits, font size, theme, and formulation selection
- Improved input value range checks
- Fixed some bugs in the calculation of transport properties
- Added a function for specific enthalpy and specific entropy input for calculations with the IF97 formulation
- Updated the viscosity calculation based on the IAPWS Formulation 2008 for the Viscosity of Ordinary Water Substance
- Updated the thermal conductivity calculation based on the IAPWS Formulation 2011 for the Thermal Conductivity of Ordinary Water Substance
The developer, Viewpoint Photography, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Donald Fleming
- Size
- 11.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2008 Don Fleming. All rights reserved.
