Plutocalc Water
Instant calculations for environmental professionals

Plutocalc is the most complete calculator for water treatment, wastewater, hydraulics, environmental chemistry and unit conversions. Plutocalc solvers were carefully tuned to require minimal inputs and provide accurate results based on the latest advances in science and engineering.


  • 102 solvers
  • 2575+ possible calculations
  • Unit conversions
  • Chemical properties database
  • Results as you type
  • Plant operation and design emphasis
  • Mobile phones and tablets supported
  • Offline calculations
  • Online, App and Portable versions
  • Multiple interface languages
  • Beautiful printing of the results
  • Active development
  • Free and fast. Very fast!

What's new


Get it on Google Play Get it on the Amazon App Store Download from the Apple iTunes Store


If you like Plutocalc and want to support the development of new versions, try Plutocalc+ available only trough app stores.

Plutocalc+ has the same calculation models of the regular version but comes with some gifts for the generous supporters:

  • Early release of new versions: get the new features before everyone. Does not apply for security or bug fixes.
  • PlutoPad: a tool to log calculation inputs and outputs. Tap the pen icon to log the active field.
  • Copy and Paste: move your data faster between fields without having to type again or even highlight source data field.
  • Priority support by e-mail in English, Portuguese or Spanish
Get it on Google Play Download from the Apple iTunes Store

Plutocalc Designer

Plutocalc Designer is a compilation of tools for complete water and wastewater treatment plant sizing. Please check the Plutocalc Designer page for more information.

Model/Solver list

Unit conversions

Geometry and sizing standards

Energy, head loss and power

Contaminants and quality indices

Solutions and Chemicals

Adsorption and Ion Exchange

Filters and membranes (Ultrafiltration, Nanofiltration and Reverse Osmosis)

Chemical and biological reactions



Custom versions and corporate sponsorship

Plutocalc is distributed for free but you can propose custom calculation solvers, purchase Plutocalc+ or create a customized private label version for your business and customers. Please check the Plutocalc Business Model for more information and contact the developer if you need more details.


Please contact the developer at [email protected] for feature requests, bug reporting and the sponsorship program. Translation contributions are always welcome.


Plutocalc was created and developed by Daniel Brooke Peig and is distributed under this End User License and Privacy Agreement.

Privacy policy

Plutocalc application does not collect or transmit any data from it's users or from the systems where it runs.
The website might collect anonymous navigation statistics such as the user agent, operating system, IP address, pages accessed and the country of origin. Any data that could lead to a possible user identification (like the IP address) will be kept in secret from 3rd parties like partners, sponsors and affiliates.