MEPMate

MEPMate is an offline engineering calculator toolbox designed for building services professionals working across plumbing, HVAC, and electrical disciplines. Get fast, on-site answers with twenty-four focused calculation modules that each show intermediate steps and flag whether a result falls within commonly recommended limits. Estimate pipe hydraulics, friction head loss, drainage slope, pump head, tank volume, stormwater flow, duct velocity, cooling and heating loads, fresh air, refrigerant pipe size, load current, cable ampacity, voltage drop, reactive compensation, short-circuit level, grounding resistance, and illuminance. Save your work to a local history, star favorite tools, convert engineering units, and pick from multiple native themes with full Dark Mode. Everything runs entirely on device with no account, no subscription, no ads, and no tracking. Results are for reference and preliminary sizing only; please verify against current codes and your project design.