Your engineering office in one app

Electrical and mechanical calculations at an institutional level — calculator-style equations, standards-based justification, and a client-ready PDF report carrying your office name.

Desktop Apps
Download the app
The MT Eng Office window showing a calculation result with its steps

Every tool built to a professional standard

A complete electrical suite

Voltage drop, cable sizing, short circuit, breaker coordination, busbars, load schedules, earthing, lighting, conduits, transformers, generators, and power-factor correction.

Mechanical & HVAC

Cooling and heating loads, air ducts, chilled-water pipes, fans and pumps, and air-change rates.

Built on the standards

IEC, ASHRAE, NEC and BS — every calculator comes with a justification panel citing the reference and assumptions, not just a number.

Calculator-style equations

Real fractions, roots and exponents, every step with its numbers substituted — you review it like a hand-worked sheet.

Tools that link together

Send a result from one tool into another in a click — the current from a load calc flows into the breaker and cable with no retyping.

Projects with one report

Group all a project's calculations under the client's name and hand over one consolidated PDF with a cover and contents.

Share a project with your team

Add colleagues by username and set each one’s role — view, edit, or manage.

A report in your office name

Every report carries your name, office and licence number — client-ready in a click, shareable to WhatsApp or email.

Excel sheets on OneDrive

Open your sheets, edit, and saving syncs automatically — without leaving the app.

Runs from your machine

A Windows build that installs in a minute and runs with no browser — your calculations work even offline.

How to get started

  1. 1

    Download the app

    Grab the latest Windows build — the download starts instantly and installs in a minute.

  2. 2

    Add your details

    Enter your name and office once — they become the header on every report you export.

  3. 3

    Start calculating

    Open any tool, enter your values, and see the result with its steps and standards on the same screen.

  4. 4

    Group and deliver

    Save your calculations into a project and export one client-ready PDF.

A look inside the app

Every step is a calculator-style equation, with the standards and references beside it.
The method & justification panel shows how the number was reached — real fractions and roots.
Send a result from one tool into another in a single click.
The value arrives in the next tool and is calculated, with coordination checked automatically.

Questions you might have

What does it run on?

Windows — it runs straight from your machine with no browser.

Who is it for?

Electrical, mechanical and HVAC engineers and offices who want documented calculations and client-ready reports.

Do reports carry my details?

Yes — every report carries your name, office and syndicate number, along with the calculation steps and standards.

Does it work offline?

Calculations and PDF export work offline. Syncing and sharing projects need a connection.

More of our apps

MT-Themes MT-Themes A professional mobile app for your Zid store — ready-made themes, an AI assistant, push notifications, and live chat with your customers. Automated Blog Automated Blog AI-written articles published to your store blog automatically — with zero effort from you. MT Manager MT Manager A desktop app to manage your Salla store — handle products, orders, and inventory straight from your computer.

Ready to work at an institutional level?

Download the app and run your first calculation now.

Download the app