About MepCalculator.com

MepCalculator.com is a free engineering calculator platform built for MEP (Mechanical, Electrical, and Plumbing) professionals, HVAC engineers, and construction project teams.

What We Offer

Our calculators cover a wide range of engineering disciplines:

• Hydraulics — pipe flow, pressure loss, pump power, pipe sizing, Darcy-Weisbach, Reynolds number
• HVAC & Thermal — AHU sizing, heat loss/gain, boiler heating, chiller capacity, plate heat exchanger, ERV
• Sanitary — fixture unit calculations per TS EN 806-3 and TS EN 12056-2
• Unit Converters — pressure, flow, temperature, energy, power, density, viscosity, and more

Our Mission

Engineering calculation tools should be fast, accurate, and accessible. MepCalculator.com was built by engineers, for engineers — to eliminate repetitive manual calculations and reduce errors in the field and in the office.

Standards & References

Our calculators are based on internationally recognized standards including EN, ASHRAE, NFPA, and TS EN series. All results are for reference only and should be verified by a qualified engineer.

Contact Us

We welcome feedback, suggestions, and bug reports. Please visit our Contact page.