Mercer Mettl Test: Rules, Proctoring and What Is Allowed

Last updated: 23 October 2026 · By the Asuraa Team

Quick answer: In a Mercer Mettl test you are expected to use one laptop or desktop, stay inside the test window, remain visible on camera, and keep phones and other people out of the room. Mettl's help centre says organisations can end the test on the first window exit, block copy-paste, take screen and webcam snapshots every 60 seconds, and flag a mobile phone or second person with AI (as of October 2026). Calculators and rough paper depend on the test owner.

Key takeaways

• Mettl's browsing tolerance counts every exit from the test window, and organisations can set it to terminate the test on the very first exit.
• Mettl's advanced visual proctoring captures screen and webcam snapshots every 60 seconds and raises AI flags for a mobile phone, another person or looking away.
• Mettl says proctored tests do not support phones or tablets and work on Chrome 63+ or Firefox 52+ on a laptop or desktop.
• Mettl's pre-test FAQ asks for an uninterrupted 512 kbps for proctored tests, while its Secure Browser article asks for 1 Mbps.
• Calculators, rough sheets and breaks are set by the organisation running the test, so the instruction page overrides any generic Mettl rulebook.

In a Mercer Mettl test, what is allowed depends on the settings chosen by the organisation that sent you the test, but the default assumption should be: one laptop or desktop, one person, one window, no phone, and no talking. Mettl's own help centre lists the controls an organisation can switch on, from counting every time you leave the test window to AI flags for a second person or a mobile phone in the webcam frame.

This guide turns Mettl's support documentation into a plain allowed vs not-allowed list and a system-check checklist, as of October 2026. For a comparison of Mettl with HackerEarth, SHL and other platforms, see our online assessments guide for India.

What are the main Mercer Mettl proctoring rules?

The core rules are that you stay inside the test window, stay visible on camera, and use only the device and browser the test allows. Mettl's help article on anti-cheating measures describes the controls an organisation can enable:

• Access time. You can start only inside the time slot the organisation sets.
• Browsing tolerance. Every exit from the test window is counted. The organisation can allow a set number of warnings, or choose "No Warning", in which case the test ends the first time you leave. Exceeding the limit terminates the assessment.
• No Plagiarism. Blocks copy-paste and print-screen.
• Advanced visual proctoring. You submit a photo of your ID and face, and Mettl captures screen and camera snapshots every 60 seconds. AI flags include face not visible, another person, looking away, partially visible face, participant not present, away from window and mobile phone detected.
• Full webcam recording and audio proctoring. The whole session can be recorded, and audio proctoring (off by default) detects human speech and the number of speakers.
• 360-degree room check. You may have to show the whole room on webcam before starting.
• OTP, IP restrictions and private access. Extra checks that only the right person, on the right network, opens the test.
• Supervised resume. After a disconnection, a proctor may need to approve your return.

You will not know which of these are on until you read your test instructions, so prepare as if all of them are.

What is allowed and not allowed in a Mettl test?

Mettl documents what it can block and flag; the organisation running the test decides the rest, such as calculators and rough paper. The table below separates the two.

An Indian example of owner-set rules. The Institute of Actuaries of India's guidelines for candidates, which give Mettl's support email as the exam platform helpline, allow only listed calculator models, loose blank sheets for rough work that the proctor may ask to see, and a two-minute restroom break only with proctor permission through the chat box. The same guidelines prohibit mobile phones, earphones or headphones and smartwatches, and forbid talking to anyone or reading questions aloud. A campus or company test can set different rules, which is why your own instruction page matters most.

What is the Mettl system-check checklist?

Run Mettl's compatibility check a day or two before the test, then repeat the basics on test day. Mettl's MSB test article recommends checking a day or two ahead to avoid last-minute problems.

1. Click "Check System Compatibility" in the invite email. Per Mettl's pre-test FAQ, a pass shows a message that the assessment will run fine on this computer.
2. Take the mock test if one is offered. The test-taker guide describes an "Attempt Mock Test" link for practice and compatibility.
3. Check your internet. The pre-test FAQ asks for an uninterrupted 512 kbps for proctored tests (256 kbps for non-proctored), and the MSB article asks for 1 Mbps when using Mettl Secure Browser. Aim for the higher figure and keep a mobile hotspot as backup.
4. Use a supported browser. Chrome 63+ or Firefox 52+, with pop-ups allowed for the test window.
5. Clear cache and cookies. The guide suggests Ctrl+Shift+Delete in Chrome or Firefox.
6. Turn off automatic updates. Windows updates, antivirus definition updates and app updates can restart your machine mid-test.
7. Check firewall ports. On office or college networks, ports 1987 and 1988 must not be blocked for webcam-proctored tests.
8. Install Mettl Secure Browser if asked. Per the MSB article, it needs Windows 7 or later, about 65 MB free space and administrator rights; guest accounts are not supported. Launch the test from the link, not by double-clicking the MSB icon.
9. Test camera and microphone. Close Zoom, Teams or any app that might hold the camera.
10. Keep your ID ready. You will capture a face photo and an image of your ID proof.

What happens if your internet disconnects during a Mettl test?

A short drop usually lets you resume, but too many disconnections can auto-submit the test. Mettl's candidate guide says disconnection can happen when the connection is unstable or falls below 512 kbps, and that the test is submitted automatically once the disconnection limit is exceeded. If the Resume button is not active, the test-taker guide says to wait 7-8 minutes. Where supervised resume is enabled, a proctor has to authorise you before you continue (anti-cheating measures).

If it happens, do three things: reconnect (switch to your hotspot if needed), resume as soon as the button is active, and email the organisation that sent the test with the time of the drop. Do not open other apps to troubleshoot while the test window is active, because that may count as leaving the window.

How does the Mettl test screen work once you start?

You verify yourself, read the instructions, and answer questions with a timer in the top-right corner. Mettl's MSB test article describes the flow:

• Allow camera and microphone, read the instructions and enter your registration details.
• Capture your photo and ID proof, then wait while the administrator verifies them; you may be asked to resubmit.
• Move between questions with Next Question, the question numbers or the section drop-down.
• Use Revisit to mark a question for review. Green means attempted, orange means marked for review, grey means not attempted.
• Click Finish Test and then "Yes, Finish Test" to submit. If time runs out, the test submits automatically.

If you received an invitation key rather than a link, enter it at tests.mettl.com; the article describes this key as 8-12 digits.

What do most guides on Mettl test rules get wrong?

Most guides claim Mettl has one fixed rulebook, for example "you get 3 tab-switch warnings" or "calculators are never allowed". Mettl's documentation shows the opposite: the organisation picks the browsing tolerance, can set it to terminate on the very first exit, decides whether audio proctoring runs, and sets its own policy on calculators and rough work. Two Mettl tests in the same week can have different limits.

The second myth is that a flag equals disqualification. Mettl's AI flags and snapshots feed a report that the organisation reviews; the help article does not describe flags as automatic rejection. That said, a report full of "looking away" and "another person" flags gives a reviewer every reason to reject you, so remove the triggers instead of hoping for a lenient reviewer. Our explainer on whether online assessments can detect cheating goes deeper into how reviewers read these signals.

Finally, Mettl is used for far more than placements: Indian professional bodies and universities run exams on it too. If your test is part of a company drive, it may sit alongside aptitude and coding rounds like those in our aptitude test preparation guide and our tab-switch warning explainer.

Related guides

• Online Assessments for Jobs in India: Complete Guide
• HackerEarth Assessment: What to Expect and How It Works
• SHL Assessment for Freshers: Test Types and How to Prepare
• Tab Switch Warning in Online Test: What Happens Next?

FAQ

Can I switch tabs during a Mettl test?

You should not. Mettl's browsing tolerance setting counts every time you leave the test window. The organisation can allow a set number of warnings, and Mettl can show how many exits you have left, but it can also choose a No Warning mode that ends the test on the first exit. Exceeding the limit terminates the assessment.

Does Mettl detect mobile phones?

It can. Mettl's advanced visual proctoring includes an AI flag for a mobile phone detected in the webcam frame, along with flags for another person, looking away and face not visible. Screen and camera snapshots are captured every 60 seconds and the full session can be recorded, so keep your phone out of the room or switched off and out of view.

Is a calculator allowed in a Mercer Mettl test?

Only if the organisation running the test allows it. Mettl's documentation describes proctoring controls, not a universal calculator policy. For example, the Institute of Actuaries of India allows only listed calculator models in its online exams, while many company aptitude tests provide an on-screen calculator or none. Check your instruction page before the test.

Can I take a Mettl proctored test on my phone?

No. Mettl's test-taker guide says proctored assessments are not supported on mobile phones or tablets. Use a laptop or desktop with Chrome 63 or later or Firefox 52 or later, a working webcam and microphone, and a stable connection of at least 512 kbps, or 1 Mbps if the test uses Mettl Secure Browser.

What happens if my internet drops in a Mettl test?

Mettl's candidate guide says connections that are unstable or below 512 kbps can disconnect you, and the test is auto-submitted if you exceed the disconnection limit. If the Resume button is inactive, Mettl suggests waiting 7-8 minutes. Where supervised resume is on, a proctor must approve your return. Inform the test organiser with the time of the drop.

Does a Mettl AI flag mean I am disqualified?

Not automatically, according to Mettl's documentation. Flags, snapshots and recordings appear in a report that the organisation reviews before deciding. However, the browsing tolerance limit is different: exceeding it terminates the test immediately. Treat every flag as something a reviewer will see, and remove the triggers by testing alone in a quiet, well-lit room.

Final thoughts

Mettl's rules feel strict, but they are predictable once you read the organisation's instructions and run the system check early. Prepare your room and machine the day before, then spend test day on the questions. If you are lining up more fresher applications after this round, browse current openings on Asuraa Jobs.