Online tool for calculating wastewater flow

The design of pumping and drainage systems begins with a reliable calculation of wastewater flow. But this is often where the first hurdle lies: complicated tables, confusing standards, and a lack of tools make quick determination difficult.

We have developed a solution for this – an online tool for calculating wastewater flow that is simple, efficient, and permanently free to use.

Why is wastewater flow calculation important?

Wastewater flow is crucial for:

  • the correct sizing of pumps and pipelines,
  • the prevention of backflow or oversizing,
  • compliance with technical regulations

Planners, installers, and engineering offices in particular benefit from a quick calculation.

How the tool works

With just a few clicks, you enter the type and number of connected drainage fixtures (e.g., toilets, showers, sinks). The tool automatically calculates the total wastewater volume (in l/s) – based on the standard values according to DIN.

Highlights of the tool:

  • Easy to use directly in the browser
  • No download, no registration
  • Mobile-optimized for smartphone and tablet
  • Option to add your own fixtures

Who is the tool designed for?

  • Planning offices and HVAC engineers who need quick estimates for projects
  • Installers who want to quickly recalculate on the construction site
  • Site managers who want to verify quantities
  • Training and education, to better illustrate standard values

Conclusion

Calculating wastewater flow doesn’t have to be complicated. With our tool, you get a reliable value in just a few seconds – whether at your desk or directly on site.