Sleek, Intuitive and Powerful App for Pipe & Duct calculations

For HVAC & MEP Engineers

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Trusted by world leading engineering firms

Automatic sizing for pipes and ducts

Used by MEP & HVAC engineers to do quick calculations of velocity and pressure drop

Select pipe and media

Select a pipe and media from our public database or add custom pipes for for your company

Select flow and dimension criteria

Select a flow/power and maximum velocity and/or max pressure drop. All units can be easily toggled between

Optimal size is displayed

5 sizes are displayed in a stack chart. The one in the middle is the size which meets the requirement

What our customers say

My go to tool for sizing and calculating effects

Jacob Fingal

Installation Manager, Skanska

Great tool, very intuitive and easy to use

Mattias Björn

MEP Engineer, Energy Machines


Single License

Organization License



Access to Pipe & Media Repository

Personal Pipe & Media Repository

Share Pipe & Media Repository

Unlimited user for all employees

Frequently asked questions

We have everything covered for you

What will I get with an Enterprise subscription?

Your organization will get a shared pipe and media repository. Fully customizable to suit your organization needs. Also, each member of the account will get her own private pipe and media repository.

Can I pay with credit card or PayPal?

Not at this time. After you've placed an order you will receive an email with an invoice within 72 hours.

What if I sign up and want to cancel?

You can cancel your subscription at any time. Your subscription will remain active until the current time period is finished.

Can I get a refund?

If you're not satisfied, for any reason, within 30 days you get a full refund, period, no questions asked. We don't want your money if you're not amazingly happy.

Contact us at for more information.