Free Tools

MEP Quick Calcs

The same formulas behind MEP Design Platform, free to use for a quick indicative mechanical & plumbing design check.

Please note: all calculations follow relevant CIBSE / IHVE / Building Regulations methodology, but are provided for indicative purposes only. Always have a qualified engineer verify figures before use on a live project — this tool is not a substitute for a full design check.
1

Cold Water Storage

Storage volume and Legionella turnover check, using the CIBSE/IHVE Plumbing Engineering Services Design Guide method.

2

Hot Water Storage

Quick sizing for hot water storage vessels against demand.

3

Pipe / Duct Sizing

Velocity and pressure-drop-checked pipe and duct sizing for a given flow rate.

4

Condensation Checks

Pipe insulation, duct insulation and room surface condensation risk, against ambient conditions.

Same formulas as MEP Design Platform

Free to use, no sign-up needed — opens in a new tab.

Launch the Calculator

Need the full picture on a real project?

These quick calcs are a starting point — get in touch for a full, coordinated design.

Get in Touch
D3D Assistant
Quick answers, or message us directly
Quick-answers are automated. "Talk to a real person" reaches us directly.