Viega LLC – Recognized leader in press technology for plumbing and piping systems

Viega Engineering Toolbox

Viega's piping calculation tools allow you to easily evaluate the flow characteristics of your system, across multiple piping materials, enabling you to design the most efficient solution possible.

Pressure Drop

This tool calculates pressure drop, velocity, and flow characteristics for both our plastic and metal piping systems.

Time to Hot Water

This tool will calculate the time for hot water to reach its destination within the piping system.

Plumbing Sizing

This tool calculates recommended pipe sizes for plumbing systems using system pressure, pipe length, elevation change, and allowable velocity.

Terms of Use

Viega LLC (“VIEGA”) provides this Viega Engineering Toolbox software (the “Software”) to you “as is” and VIEGA makes no warranty, express or implied, regarding its accuracy, reliability, or completeness, including, without limitation, the implied warranties of merchantability, non-infringement, title, or fitness for a particular use or purpose. You assume all responsibility and risk for use of the Software, including any of the information contained therein. In no event will VIEGA, its affiliates, agents, licensors, or suppliers, or their respective officers, directors, or employees (collectively, the "VIEGA Parties") be liable for any incidental, indirect, special, exemplary, aggravated, punitive or consequential damages, even if the VIEGA Parties have been advised of the possibility of such damages or claim, whether based in contract or tort, including negligence, or on a warranty arising out of or in connection with the use of the Software. Last Updated: June 24, 2026.