About r/AskEngineers
In its own words:
Engineers apply the knowledge of math & science to design and manufacture maintainable systems used to solve specific problems. AskEngineers is a forum for questions about the technologies, standards, and processes used to design & build these systems, as well as for questions about the engineering profession and its many disciplines.
Community guide
r/AskEngineers (#406, about 2.7 million) is for questions about engineering technologies, standards, processes, and the profession. Titles must be engineering questions; no homework; avoid easily Googled asks; answer only if knowledgeable; be substantive; no generic career/workplace posts. Text (~20 ppd).
Title = engineering question
Phrase the title as a real engineering question; mechanical/electrical/civil flairs appear in samples.
Not homework or HR
Homework and generic workplace venting are out—ask about design, standards, or technical practice.
Answering bar
Don’t answer beyond your knowledge; keep replies substantive and respectful.
SubMouse Editorial
The community was created on Mar 27, 2011, which makes it 15 years old. Since Oct 26, 2026, it has gained 771 subscribers (+0.03%). It sits just behind r/Mommit (#405) and ahead of r/analog (#407) in our ranking.
What sets r/AskEngineers apart
Compared with other large communities, r/AskEngineers leans heavily on text posts (89% of recent posts; the typical Top 100 subreddit sits at 34%).
Subscriber growth
Between Sep 19, 2026 and Nov 2, 2026, r/AskEngineers climbed from 2,744,770 to 2,749,808 subscribers (+5K, +0.18%). That is about 115 new members per day. The chart uses our weekly snapshots (9 so far), so it gets longer every week.
What r/AskEngineers talks about
Looking at the titles of 108 recent posts (Oct 29–Nov 5), the words that come up most are “engineering”, “engineers”, “engineer”, “question” and “looking”. Other frequent themes are manufacturing, mechatronics, mechanical, help, electrical and advice. Recurring phrases include “mechanical engineering”, “mitek structure”, “mechatronics engineering” and “electrical engineering”. By format, 89% are text posts and 11% are links.
Popular post flairs: Discussion (43), Mechanical (35), Electrical (14), Computer (7), Civil (7), Chemical (2).
Activity and best time to post
r/AskEngineers gets roughly 20 new posts a day. The public archive holds 190,982 posts and 1,944,092 comments in total, about 10.2 comments per post.
Rules of r/AskEngineers
The moderators of r/AskEngineers list 7 rules. In short:
- Titles must be a question about engineering
- No homework questions
- Avoid questions that can be answered by researching on the internet
- Be respectful to other users
- Don't answer if you aren't knowledgeable
- Be substantive
- No generic Career/Workplace Posts
How to join
Open reddit.com/r/AskEngineers and press “Join”. Read the community rules in the sidebar before you post: every subreddit is run by its own volunteer moderators.
Frequently asked questions
How big is r/AskEngineers?
r/AskEngineers has 2,749,808 subscribers (Nov 2, 2026), which makes it the #406 safe-for-work subreddit in the SubMouse ranking. It added 5,038 members between Sep 19, 2026 and Nov 2, 2026.
How old is r/AskEngineers?
r/AskEngineers was created on Mar 27, 2011, so it has been around for 15 years. The oldest post in the public archive is from Mar 28, 2011.
How active is r/AskEngineers?
Very active: r/AskEngineers gets roughly 20 new posts a day (estimate from a sample of recent posts). Over its lifetime the archive counts 190,982 posts and 1,944,092 comments. In a sample of 108 recent posts we counted 97 different authors.
What is r/AskEngineers about?
The community describes itself as: “Engineers apply the knowledge of math & science to design and manufacture maintainable systems used to solve specific problems. AskEngineers is a forum for questions about the technologies, standards, and processes used…” Recent post titles often mention engineering, engineers, engineer, question and looking. Most posts are text posts (89%).
Is r/AskEngineers safe for work?
Yes. Reddit does not mark r/AskEngineers as an 18+ (NSFW) community. SubMouse lists safe-for-work subreddits only.
How do I post on r/AskEngineers?
Join the community on Reddit first, then use “Create post”. r/AskEngineers accepts text posts only, with galleries enabled. It has 7 posted rules, starting with: “Titles must be a question about engineering”; “No homework questions”; “Avoid questions that can be answered by researching on the internet”. Moderators remove posts that break the rules, so read them in the sidebar before posting.
Which communities are like r/AskEngineers?
Communities with similar topics include r/Design (4.5M), r/AskReddit (60M), r/math (4M), r/askscience (26.4M) and r/Wellthatsucks (4.6M).
Stats from public data (data updated Nov 2, 2026; activity, rules and archive totals via the Arctic Shift archive, Nov 6, 2026). Point and comment counts are archive snapshots and can be lower than on Reddit today. SubMouse is an independent directory and is not affiliated with Reddit or the moderators of r/AskEngineers.