Mark Rober YouTube Channel Stats

As of October 2026, Mark Rober has 83,600,000 subscribers on YouTube (83.6M). YouTube rounds public subscriber counts, so the exact number can differ slightly from what you see on the channel page.

Mark Rober has received 19,285,473,567 total views (19.29B) across 271 public videos. That works out to roughly 71.16M lifetime views per upload, including Shorts.

Mark Rober has uploaded 271 public videos. We analysed the latest 271 uploads: 126 were long-form videos and 145 were Shorts, which are excluded from the averages on this page.

The Mark Rober YouTube channel was created on October 20, 2011, so it is 15 years old.

Mark Rober lists United States as its country on YouTube.

Videos on Mark Rober average 48,636,969 views (48.64M), with a median of 38.37M views per video. The average is 58% of the subscriber count, which shows how much of the audience watches each upload.

Mark Rober has an engagement rate of 1.68%, calculated by YTGrowAI as (likes + comments) divided by views across 126 long-form videos. This is our own calculation from public data and not an official YouTube statistic.

Over the last 12 months Mark Rober has published 8 long-form videos, which is 8 videos per year. Most uploads go live on Saturday, and Sunday uploads have earned the highest average views.

The most viewed video on Mark Rober is "World's Largest Jello Pool- Can you swim in Jello?" with 223,483,088 views, published on May 16, 2019.

The most recent long-form upload we found is "Last Cheater Standing Wins $10,000", published on Sep 19, 2026, which has 23,024,986 views so far.

Mark Rober currently shows a "major drop" pattern. Its 10 newest settled videos average -41% views compared with the 10 videos before them. Momentum can swing quickly, because one viral video changes the average.

Mark Rober videos in the 10 to 20 min range earn the highest average views. The channel's average long-form video runs about 16 minutes.

Mark Rober is an American YouTube creator, engineer, inventor, and educator known for making large-scale science and engineering videos. Mark Rober built his audience with playful experiments, challenge videos, and inventions that make complex ideas easy to understand. Before YouTube, Mark Rober worked at NASA and later at Apple, which gives his channel a strong technical foundation. He is also the founder of CrunchLabs, a STEM-focused company launched in 2022. Mark Rober’s channel mixes entertainment with engineering, which is why it appeals to both families and science fans.

Mark Rober’s real name is Mark B. Rober. Public profiles and biographies consistently identify Mark Rober by that full name, and he uses the shortened form as his creator brand. Mark Rober is known online simply as Mark Rober because the channel is built around his personal identity and engineering background. He is an American YouTuber, former NASA engineer, former Apple product design engineer, and the founder of CrunchLabs. The channel’s content centers on science, inventions, and large experiments.

Mark Rober was born in 1980 or 1981, depending on the public source, so his age in any given year depends on which birth year is used. Mark Rober is widely described as being born in March 1980 in some biographies, while other public references list 1980 or 1981. Mark Rober is best known for turning his engineering background into YouTube content that explains science through entertainment. Because some sources differ on the exact birth year, the safest public description is that Mark Rober was born in 1980 or 1981.

Mark Rober started his YouTube channel in 2011. Mark Rober’s channel grew from early science and engineering videos into one of the biggest STEM entertainment channels on the platform. Over time, Mark Rober developed a style built around high-production builds, memorable titles, and dramatic experiments that are easy to understand quickly. The channel’s long run has allowed Mark Rober to build a large catalog of evergreen videos that keep accumulating views over time. His upload pattern is selective rather than constant, which helps each release feel like a major event.

Mark Rober got famous by combining engineering credibility with highly shareable YouTube entertainment. Mark Rober’s breakthrough came from videos that used massive builds, clever tests, and simple storytelling to make science feel exciting and funny. His background at NASA and Apple helped make Mark Rober stand out from typical creators because viewers trusted that the experiments were real and thoughtfully designed. As the channel grew, Mark Rober became especially known for viral hits involving giant contraptions, pranks, and challenges with a clear payoff. That mix of expertise and spectacle made Mark Rober broadly popular.

Mark Rober’s biggest video among the examples provided is World’s Largest Jello Pool- Can you swim in Jello? with 223,483,088 views. Mark Rober’s biggest hits usually share the same qualities: a very visual concept, an instantly understandable title, and a payoff that feels both absurd and satisfying. Mark Rober’s biggest videos are not just about the science; they are designed like mini event films. That is one reason his top-performing uploads keep attracting new viewers long after release. Mark Rober’s library is full of videos that can keep growing for years.

Mark Rober runs the channel as a personal creator brand. Mark Rober is the face, host, and creative force behind the content, drawing on his experience as a former NASA engineer and Apple product design engineer. The channel is also closely connected to CrunchLabs, the STEM learning company Mark Rober founded in 2022. While a production team likely helps with filming and editing, the public identity and on-camera leadership belong to Mark Rober. The channel’s style is strongly tied to his engineering personality and presentation.

Mark Rober is publicly associated with the United States, and some public profiles list California or the broader U.S. as his base. Mark Rober has not consistently publicized a precise home address, and reliable public summaries usually avoid giving that level of detail. Mark Rober’s professional and creator work is tied to U.S.-based companies and projects, including NASA, Apple, YouTube, and CrunchLabs. For privacy and accuracy, the safest public description is that Mark Rober is based in the United States rather than naming a specific private residence.

Mark Rober is generally seen as a family-friendly creator with far fewer controversies than many large internet personalities. Mark Rober’s channel is better known for science experiments, pranks, and engineering builds than for scandals or drama. Public discussion around Mark Rober usually focuses on the credibility of his experiments, the scale of his production, or the educational value of his content. Because Mark Rober presents himself as a science communicator, viewers tend to judge the channel on entertainment quality and trustworthiness rather than controversy. No major channel-defining scandal is commonly associated with Mark Rober.

The best Mark Rober videos to watch first are usually the biggest and most representative ones, especially World’s Largest Jello Pool- Can you swim in Jello?, Egg Drop From Space, and Backyard Squirrel Maze 1.0- Ninja Warrior Course. Mark Rober’s best starter videos work because they show the channel’s full formula: a huge premise, strong visual storytelling, and a satisfying result. Mark Rober also has many scam-testing and animal-focused experiments that are easy entry points for new viewers. Starting with his most viewed uploads is the fastest way to understand why Mark Rober became such a major science-entertainment creator.