R134aTables Excel Add-In

1,1,1,2-Tetrafluoroethane (HFC-134a) Properties for Excel based on Industrial formulation (32 bit & 64 bit)

For Excel 2007 / 2010 (32 bit & 64 bit) / 2013 (32 bit & 64 bit) / 2016 (32 bit & 64 bit) / 2019 (32 bit & 64 bit)

R134aTables Excel Add-In

About R134a Tables Excel Add-In

The R134a Tables Excel Add-In library calculates 23 thermodynamic properties of R134a (1,1,1,2-Tetrafluoroethane).

It allows 11 different combinations of input variables to be used for calculations.

Input variables that can be used are:

  •  1 Pressure
  •  2 Temperature
  •  3 Enthalpy
  •  4 Entropy
  •  5 Volume
  •  6 Internal energy
  •  7 Quality (vapor mass fraction)

The library is fully integrated in Excel, and available functions can be used in the same way as any other Excel function.

Main features of the library:
  • Professional quality, industrial strength software, proven in real world applications
  • Based on the formulation for advanced technical applications
  • License includes 32 bit and 64 bit version of the library
  • Create User Defined Functions (UDF) which use R134aTables functions
  • Developed in C++ for maximum speed, thoroughly tested for accuracy
  • Easy to install and easy to use
  • One year free technical support

The following figure shows a sample spreadsheet included in the download package.

R134aTables Excel Add-In

R134aTables Excel Add-In - Sample calculations in Excel

Used Formulations

For thermodynamic properties the library uses new industrial formulation for R134a (1,1,1,2-Tetrafluoroethane), formulated in Helmholtz energy. It is intended to be used for advanced technical applications.

Equation of state was presented in:

  • "Equations of State for Technical Applications" by R. Span and W. Wagner, International Journal of Thermophysics, Vol.24, No.1, January 2003

System Requirements

Operating system Windows 7 / Windows 8 / Windows 8.1 / Windows 10.

Excel 2007 / 2010 (32 bit & 64 bit) / 2013 (32 bit & 64 bit) / 2016 (32 bit & 64 bit) / 2019 (32 bit & 64 bit).

User privileges
Installation and use of the library requires standard user privileges or better.

R134a Properties

The following thermodynamic properties can be calculated with R134aTables Excel Add-In:

Calculable properties in SI or E units - R134aTables Excel Add-In v3.1
  1 Pressure
  2 Temperature
  3 Density
  4 Specific volume
  5 Specific enthalpy
  6 Specific entropy
  7 Specific internal energy
  8 Specific isobaric heat capacity
  9 Specific isochoric heat capacity
 10 Speed of sound
 11 Isentropic exponent
 12 Specific Helmholtz free energy
 13 Specific Gibbs free energy
 14 Compressibility factor
 15 Quality [vapor mass fraction]
 16 Isobaric volume expansion coefficient
 17 Isothermal compressibility
 18 Partial derivative (dV/dT)p
 19 Partial derivative (dV/dP)T
 20 Partial derivative (dP/dT)v
 21 Partial derivative (dP/dV)T
 22 Isothermal Joule-Thomson coefficient
 23 Joule-Thomson coefficient

Range of Validity

The entire set of equations used by the R134aTables Excel Add-In library, is defined by the following temperature and pressure range:

  • 169.9 K < = T < = 523 K
  • 0 < = p < = 75 MPa


The following screenshots demonstrate how to use the library, it's a 4 step process.

1.(a) Start Excel and press the "Insert Function" toolbar button.

Insert Function toolbar button

1.(b) Alternatively, start Excel and press the "Insert Function" menu item.

Insert Function menu item

2. Select a R134aTables library (SI or English units).

Select R134aTables library

3. Select a function and press the OK button.

Select Function - R134aTables library

4. Enter input parameters and press the OK button.

Calculate R134aTables properties

NOTE: You don't have to put quotes around the property ID, they are inserted automatically.

That's it, the result will be displayed in the selected cell.


The setup program will automatically install the library in Excel.

To install the library successfully you must have at least standard user privileges on your computer.

R134aTables Excel Add-In library

For Excel 2007 / 2010 (32 bit) / 2013 (32 bit) / 2016 (32 bit) / 2019 (32 bit)

- Download R134aTables Excel Add-In version (3.1) - demo (32 bit)

R134aTables Excel Add-In library

For Excel 2010 (64 bit) / 2013 (64 bit) / 2016 (64 bit) / 2019 (64 bit)

- Download R134aTables Excel Add-In version (3.1) - demo (64 bit)

Quick reference documents

- List of available properties in R134aTables Excel Add-In

- List of available functions in R134aTables Excel Add-In

Price info

Prices subject to change without notice!

A license includes 32 bit and 64 bit versions of the library.

R134aTables Excel Add-In version 3.1
1-4 licensesUSD 299.95 per copy
5-20 licensesUSD 274.95 per copy
21 > licensesUSD 249.95 per copy
Company wide licenseUSD 7995.00


Each license also includes the following:

  • One year free e-mail technical support
  • One year free minor version updates if available (for example 3.2, 3.x up to, but not including version 4.0)

If you have any questions, please don't hesitate to contact sales. Contact information is provided on the following page:

 Contact Us - (opens in a new tab)

General Information

For quick access to the R134aTables Excel Add-In, you may purchase and download our product using automated and secure online ordering system.
After ordering, you will receive a notification mail with further instructions for how to download and install the software.

The Registration includes a free subscription program. Each Registered user will be receiving bug fixes and technical support for the registered version within one year.

Shipping by the postal mail is not available.

How to order

1. Internet ordering

Available ordering options (open an order form to select):

  • Credit Card (Visa®, Mastercard®, American Express®, Discover®)
  • PayPal
  • Amazon

To buy a specific number of licenses for the R134aTables Excel Add-In click the button: Open order page for the R134aTables Excel Add-In.

To purchase a Company Wide License contact sales. Contact information is provided on the following page:
 Contact Us - (opens in a new tab)

2. Bank Direct Payment

If you prefer to pay for the product by "Bank Direct Payment", contact sales. Contact information is provided on the following page:

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