Plutocalc Designer
Reliable and quick plant sizing

Plutocalc Designer is a software suite for water and wastewater treatment plant design powered by the Radecapp framework.


  • Numeric solvers/optimizers that converge better and faster than any spreadsheet
  • Technology provider agnostic - use components from any manufacturer
  • Databases of chemical properties, coefficients, parts and components
  • Latest design practices from reliable peer-reviewed scientific and engineering publications
  • Handbook for each process with literature references, detailed instructions, comments and tips
  • API for connecting with external applications
  • Privacy first! No project/design information is stored in our servers
  • No installation required, 100% web based. Works on Windows, Mac, Android, iOS, Linux and even on smart TVs and refrigerators
  • Take your data with you! Export and import using open file formats (TXT or JSON)
  • Run calculations directly from spreadsheets with the Excel interface
  • Multi-language: Output file can be translated using Google Translate
  • Supports hundreds of measurement units for inputs and outputs

What's new

  • 24/04/2021 - Version 1.5 alpha
    • MBR design now considers peak flow for the membrane sizing
    • New flow units supported MLD and MGD
    • Handbooks updated, spelling errors fixed
    • All changes and version history
  • 08/12/2020 - Version 1.4 alpha
    • New Reverse Osmosis and Nanofiltration CIP (Clean in Place) designer
    • New internal piping library with commercial (ANSI B36.10 and B36.19) sizes and head loss calculation functions
    • New conversions for energy units
    • Fixed bug on oxygen saturation calculation at different salinity in biological wastewater treatment models
    • All changes and version history
  • 27/09/2020 - Version 1.3 alpha


Plutocalc Designer models will be available for FREE during the Alpha and Beta test phases. After this period the software might be charged at a "per calculation" base. Prices will be the minimum required to cover the server maintenance costs and to purchase reference technical literature. Users are encouraged to visit the handbooks, test the interface and evaluate the input/output report formats before making any purchase.

Collaboration rewards

Users that contribute with technical literature or information that led to improvements in Plutocalc Designer features or models will be rewarded with generous calculation vouchers.


Please contact the developer at [email protected] for feature requests, bug reporting and improvement suggestions.


Plutocalc Designer was created and developed by Daniel BP with the collaboration of several engineers and scientists and is distributed under this End User License and Privacy Agreement.

Privacy policy

Plutocalc Designer software collects and records the license key and IP address from the users for the sole purpose of managing the server load, usage statistics and the license usage. Plutocalc Designer does not store calculation inputs or outputs in the server.
Any data that could lead to a possible user identification (like the IP address) will be kept in secret from 3rd parties. For more information please refer to the End User License and Privacy Agreement