How to try a tool as a guest, create and verify an account, get your work into your account, and find your way around.
MEP Tools is a set of MEP calculators and layout tools for practising engineers, available in English and Arabic. Everything runs in the browser — no install, no plugin.
You do not need an account to try a free tool. Open the tools catalog, filter by Free access, and use any tool there directly.
As a guest you can browse the catalog, tool About pages, pricing, and this help centre. Your work is kept on this device as you go — the chip in the tool header says so — and it is still there when you come back in the same browser. You cannot save a project to an account, open a saved project (you'll be redirected to sign in), or open a Pro tool. Guests also see ads, and image exports carry a DRAFT watermark.
Once you have a result worth keeping, the home page and the tool's Getting started panel offer Create free account to save.
Sign in with email and password, or with Google. Signed-out visitors may also see Google's one-tap sign-in prompt.
Password rules: 8–4096 characters, with at least one uppercase letter, one lowercase letter, one number, and one special character. Registration also asks for a display name (2–64 characters). Disposable email addresses are not accepted.
Signing in claims the work you did as a guest in this browser for your new account — it is not uploaded yet, but it is now yours.
A verification email is sent automatically when you register. If it doesn't arrive, resend it from the banner at the top of the app, from the Getting started card on your dashboard, or from the account page.
This is the step that trips up most new users: saving a project, starting checkout, starting a trial, and changing your plan all require a verified email. You can sign in, browse, and use tools before verifying — but your work stays on the device until you confirm your address.
The moment you verify, work you did as a guest is moved into your account as saved projects, newest first, as far as your plan's project slots allow. See What happens when you verify.
Open a tool, make your changes, and choose File → Save. The Free plan includes 3 projects. Autosave is on by default, so once a project exists, later edits are saved for you about ten seconds after you stop typing.
Watch the chip in the tool header: Cloud saved means the work is in your account; On this device means it isn't yet. See Save status & unsaved work.
Free covers the free calculators, 3 saved projects, and browser-side exports (with a DRAFT watermark on images). Pro removes the watermark, unlocks the Pro-only tools, raises the project limit to 15, removes ads, and adds PDF, XLSX, DXF and IFC export. A 7-day trial is available on the paid plan you select — a payment card is required up front. See Plans & payments for the full comparison.
MEP Tools produces engineering aids, not permit-ready output. Every tool shows its formulas and assumptions so you can check them — verifying the result stays the engineer's responsibility. See the Engineering disclaimer.