Red Seal Millwright Exam 2026: 135 Questions, Breakdown, Pass Mark

The Red Seal exam for Industrial Mechanic (Millwright) is the interprovincial exam a millwright writes to earn the Red Seal endorsement, and most provinces and territories use it to issue trade certification as well. Red Seal calls it, in many ways, the "final exam" for tradespeople. This guide sets out what red-seal.ca itself publishes about it: the number of questions and how they are spread across the trade, the writing time and the pass mark, the three kinds of question, what you are given in the exam room, who decides whether you may write, and the change that is coming with the new occupational standard.

ProSyllabus is an independent study site. It is not part of the Red Seal Program, Employment and Social Development Canada (ESDC), the Canadian Council of Directors of Apprenticeship (CCDA) or any provincial or territorial apprenticeship authority, and nothing here is the official exam. Every exam fact on this page is quoted or summarised from the official pages listed at the foot of the page.

Red Seal publishes the format in two places: the trade’s Exam Information page gives the number of questions and how they are distributed, and the Exam Preparation Guide gives the writing time and the pass mark that apply to Red Seal exams. Every question is multiple choice. Red Seal says each question is worth one mark, that there are no trick questions, and that of the four choices only one is correct, though "the incorrect options are not always obvious".

Two pieces of arithmetic help with planning. The Preparation Guide suggests dividing the number of questions into 240 minutes to find your average time per question: for this trade, 240 minutes for 135 questions is about 1 minute 47 seconds a question (our arithmetic). And 70% of 135 questions is 94.5 (our arithmetic); the pages read state the pass mark as a percentage and do not publish a minimum number of correct answers required to pass.

Red Seal says each exam’s questions are developed to assess the activities laid out in the Red Seal Occupational Standard, and that tradespeople from across Canada decide how many questions each section gets. The standard is organised into Major Work Activities, which are broken into Tasks, which are broken into Sub-tasks, and Red Seal says exam questions are based on the Sub-tasks. For this trade the 135 questions are distributed across six Major Work Activities like this.

Mechanical power transmission (C) is the largest block, at 32 questions, and common occupational skills (A) comes next at 25. But the single largest task is not in either of them: hydraulic systems (task E-21) has 12 questions on its own, more than any other task, and preventative and predictive maintenance (task F-23) has 11. At the other end, robotics and automated equipment (task D-15) has one question. The full breakdown, task by task, is below.

A useful way to read this table is in study hours. If two tasks are new to you, and one is worth 12 questions while the other is worth 1, they do not deserve the same evening. Red Seal’s self-assessment is built for exactly this: it lists every task and sub-task, asks you to rate each task at one of three levels, considering its sub-tasks, and shows how many questions each task carries. Red Seal says it is designed to show your strengths and weaknesses and "is not intended to accurately predict how well you will do". No one sees the results except you.

Red Seal says three types of question appear on Red Seal exams, and for this trade it gives the share of each. It publishes one example of each type on the Exam Information page and more on its sample questions page; we do not reproduce them here.

Put together, the procedural and critical thinking questions are most of the exam on these figures. That matters for how you study: for illustration, identifying a counterbalance valve could test recall, while diagnosing a vertical cylinder that drifts down could test problem-solving. Red Seal also notes that someone who is skilled and experienced should be able to pick the correct answer from the options, and that the exam covers the scope of the trade across Canada, not only what is done in your own job or province.

Not every sub-task in the standard can appear on the exam. Red Seal explains that if at least 70% of provinces and territories state that a sub-task is performed by journeypersons in the trade, it is common core and could be tested; if fewer than 70% say so, it is not common core and "there will not be any questions on the Red Seal exam on this Sub-task". In the 2017 standard for this trade, the one sub-task we found marked NOT COMMON CORE is A-6.05, welding with gas tungsten arc welding (GTAW) equipment. Oxy-fuel cutting, shielded metal arc welding (SMAW) and gas metal arc welding (GMAW) are all in the common core, and task A-6 as a whole has two questions.

The trade page on red-seal.ca lists two standards. The newest Red Seal Occupational Standard for Industrial Mechanic (Millwright) is dated 2026, and of it Red Seal says: "Exams are currently under development." The previous standard, dated 2017, is the one Red Seal says "is being used as the basis for the current Red Seal exams". The task breakdown above, with its 24 tasks from A-1 to F-24, is the current exam’s.

The 2026 standard also states that the interprovincial exam for the trade has 135 questions, but it weights the six Major Work Activities differently and renumbers the tasks (in it, for example, rigging starts at task B-9 and the maintenance block is named "Performs maintenance, testing, commissioning and decommissioning methods"). The comparison below uses the percentages each document publishes.

On the pages read, Red Seal gives no date for the change. As of 25 October 2026, Red Seal identifies the 2017 standard as the basis for the current exams. Confirm the applicable standard and breakdown with your apprenticeship authority before your sitting.

Red Seal says the apprenticeship and certification authority in each province and territory decides who can write the Red Seal exam, and that the requirements "differ by trade and by type of tradesperson (e.g. apprentice or trade qualifier)". It adds that you have to be experienced in the full scope of your trade. The trade is designated Red Seal in Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Nova Scotia, the Northwest Territories, Nunavut, Ontario, Prince Edward Island, Quebec, Saskatchewan and Yukon, and it goes by several names.

The route to the exam is provincial, and so are the numbers. Two examples show how much they differ. Skilled Trades Ontario says the apprenticeship generally takes 8,000 hours, about four years, made up of 7,280 hours on the job and 720 hours of in-school training, and that passing the certifying exam leads to a Certificate of Qualification; it describes the trade as non-compulsory in Ontario. SkilledTradesBC lists 6,360 hours of work-based training and 28 weeks of technical training over four years, harmonized Level 1, 2 and 3 standardized level exams on the way, and a path for people with experience but no Canadian certification to challenge the certification exam as a trade qualifier. Check your own province or territory’s apprenticeship authority for the rules that apply to you.

The Preparation Guide lists what you are given: an exam booklet, a diagram booklet if required, and other reference material if required, which for this trade means the acronym list and the math formulas that red-seal.ca publishes for it. Answers go on a bubble sheet, and Red Seal suggests checking often that the number on the sheet matches the number in the booklet. Electronic devices may not be brought in, calculators included; if you need a calculator, one is provided. Use only the pencils, erasers, calculators and scrap paper you are given.

The formula sheet is worth knowing before the day. It gives the weight of steel per cubic foot and per cubic metre, the area of a circle, force from pressure and area, gear pass frequency, the Pythagorean theorem, a spindle speed formula, a shim formula for alignment, sling stress, wire rope clip number and spacing, surface speed, thermal expansion, cube and cylinder volumes, and a working load limit rule for 6 × 19 wire rope. See our formula sheet guide.

Red Seal’s advice starts with the standard and the self-assessment, not with question banks. It suggests becoming familiar with the occupational standard for your trade, using the self-assessment to find tasks where you lack experience, and checking how many questions those tasks carry. On practice questions it is blunt, in a section headed "Practice Questions: Buyer Beware": it says its sample questions are written by the same people and in the same format as real exam questions, that it "does not endorse any test preparation companies that claim to have Red Seal Exam questions or practice questions", and that questions on a practice test from an outside source are very unlikely to be similar to those on the exam, so memorising them may not help. It suggests using practice questions to gauge what you know before and after studying, and for every question asking why the right answer is right and why each wrong choice is wrong.