The "Steam Tables" app is the #1 selling app for quickly calculating saturated and superheated steam properties. This app is a universal app that works on both the iPhone and iPad and adjusts its screen size accordingly.

Bonus: The Steam Tables app now includes our popular HVAC Equipment Locator app built right in! Click here for details about that app:

Come see why 10000s of users world-wide have chosen our app over the competition:

1.We offer the largest combination of input parameters over all competitive apps, including:

For saturated steam:

Temperature and quality
Temperature and enthalpy
Temperature and specific volume
Temperature and entropy
Pressure and quality
Pressure and enthalpy
Pressure and spec. volume
Pressure and entropy

For superheated steam:

Temperature and pressure
Temperature and enthalpy
Temperature and spec. volume
Temperature and entropy
Pressure and enthalpy
Pressure and spec. volume
Pressure and entropy

2. We display a wide range of results (see the screenshots below for a sample).

3. Using the slider controls, you can instantly view results as you update the input parameter values by moving the slider indicator. Also, you can increment/decrement by specific values for each parameter type. You can manually input exact values if so desired, too.

4. This app is not just a steam-table lookup app. It is powered by the actual steam-table formulas, so you can calculate for all ranges of input values, not just those published in steam table books.

5. All values can be displayed in both English (IP) or Metric (SI) units. Also, you can choose to display different types of units for specific parameter types such as pressure and temperature.

6. We offer comprehensive support and regular updates based upon feedback from existing users. We've been around for 15 years and plan on being around for much longer, so you can be assured that this and all of our apps will continue to be supported and updated.

We also offer the following additional applications for the iPhone/iPad:

1. HVAC Duct Sizer
2. HVAC Pipe Sizer – Gas Low Pressure
3. HVAC Pipe Sizer - Gas High Pressure
4. HVAC Pipe Sizer – Liquid
5. HVAC Pipe Sizer – Steam
6. Steam Tables
7. Psychrometric Plus
8. Psychrometric LT
9. HVAC Pipe Sizer Plus
10. HVAC Pipe Sizer Gas Plus
11. HVAC Toolkit
12. HVAC Toolkit Ultimate
13. HVAC Residential Load Calcs
14. HVAC Load Plus
15. HVAC Equipment Locator
16. ASHRAE Duct Fitting Database
17. ASHRAE 62.1 Ventilation Load Calcs
18. HVAC Psych HD
19. HVAC ResLoad-J
20. HVAC Residential Load Calcs HD

What’s New

Version 4.5

1. Fixed the "negative sign" issue that occurs in iOS 13

Ratings and Reviews

3.0 out of 5
4 Ratings

4 Ratings

LZ2124 ,

Makes good use of iPhone capabilities

I like this better than those free web-based steam calculators. It instantly updates the results as I change the inputs so I can really see how things are affected right away.

I did some comparisons to my old college thermo text books, and the values are accurate.

I really like that you can change the units for pressure: psia, psig, etc. Great for the different types of jobs I do.

Hvacguy100 ,

Easy to use

I like that I can just move the slider to change input values and see the outputs right away. Beats manually inputting a value and waiting for the results to update after I exit the keyboard. I also like it has so many input combinations. Great for my engineering classes.

I'd like to see email capabilities added so I can email the results to myself to plug into a spreadsheet. Maybe next version.

Mechengineer1000 ,

Good update

I find I use this app daily, and I've had nothing but accurate results so far. It's good to see periodic updates coming along. Shows that the company is serious about this app and won't leave us users hanging if we need support or a fix.


Carmel Software Corporation
20.9 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
In-App Purchases
  1. HVAC Equipment Locator $9.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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