Lightweight web applications for the built environment.

iCalc is what industry leaders and professionals in fire protection use to stay on the cutting edge of engineering productivity.

Hydraulic Graph Demonstration
Density Curve Options

We made these tools for you. As engineers ourselves, we care about how you get your work done.

"I have worked with Hasu and [The FSC Family] for many years. Myself and our people rely on their expertise on a weekly and daily basis. When Hasu’s water program hit the industry every AHJ raved on how easy it was to understand. I am sure iCalc will make the same impact on the industry."
-Mike McGuire
President -- McDaniel Company, Inc.

We help you get the answers you need by doing the heavy lifting of calculations for you.

Simply sit back and design your system, without sweating the small stuff!

iPhone running density Curve