If you spent any time on the gaming side of YouTube between 2016 and 2022, you definitely know the face. Maybe you know him as RonaldOMG. Maybe you just think of him as the kid who was always competing against his sister in those chaotic "SIS vs BRO" challenges. But as the internet grows up, so do its stars.
People are constantly asking, how old is Ronald Kurzawa, mostly because he started so young that it feels like he should still be ten. He isn't. Not even close.
The Actual Age of Ronald Kurzawa
Ronald was born on September 3, 2008.
Since we are currently in early 2026, that makes Ronald Kurzawa 17 years old. He’ll be hitting that massive milestone—the big 18—later this autumn. It’s wild to think about, right? Most of us remember him as the high-pitched kid playing Roblox or Minecraft in his bedroom in Spain. Now, he's basically an adult.
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Time flies online. One minute you're watching a kid open mystery boxes, and the next, he's a teenager with a deep voice navigating the weird world of post-YouTube fame.
Why Everyone Is Confused About His Age
It's actually pretty simple. Ronald’s peak "viral" era was roughly 2017 to 2019. Back then, he was around 9 or 10 years old. Because his older videos still get millions of views every month, the YouTube algorithm keeps serving up 2018-Ronald to new viewers.
If you stumble onto a video of him today, you might see a little kid. Then you check his Instagram or TikTok and see a 17-year-old. It creates this weird digital time-warp.
Also, his family moved around a lot—from Canada to Spain and beyond—which added to the "lore" and kept people searching for updates. When a creator goes quiet or shifts platforms, fans naturally get curious about how much they’ve changed.
A Quick Look at the Kurzawa Timeline
- 2008: Born in Canada.
- 2016: Starts his YouTube journey at just 7 years old.
- 2017-2021: The "Golden Era" of SIS vs BRO with his sister Karina.
- 2022: The family famously steps back from their main collaborative channel.
- 2026: Ronald is 17, likely finishing high school or focusing on his own projects.
Honestly, the transition from "child star" to "regular teenager" is never easy, but Ronald seems to have handled it by leaning more into his personal life and less into the 24/7 grind of daily vlogging.
What Is Ronald Doing Now?
While the SIS vs BRO channel isn't the powerhouse of new content it once was, Ronald Kurzawa hasn't vanished. He’s still active on social media, though his vibe has shifted. He’s less about the "loud" gaming persona and more about just living his life.
There was a lot of talk a few years back about the "downfall" of their channels, but that’s a bit dramatic. They didn't fall; they just grew up. You can't do "Sibling Challenges" forever without it getting a little awkward when you're nearly 20.
He still has his massive following, but the content is more reflective of a 17-year-old's interests—lifestyle snippets, fashion, and the occasional gaming update.
Facts vs. Rumors
You'll see a lot of weird stats online about his height or net worth. Most of those "celeb bio" sites are just guessing. They'll say he's 5'11" one day and 5'5" the next. Truthfully, unless he posts a photo next to a literal measuring tape, it’s all speculation. What we do know is his birthdate is solid. September 3 is the day the Kurzawa fans celebrate every year.
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It’s also worth noting that while he's Canadian by birth, his heritage is Polish. That European influence was always a big part of their family dynamic in videos, even when they lived in Marbella, Spain.
Navigating Life After SIS vs BRO
For a kid who grew up with cameras in his face, reaching 17 is a huge deal. It’s that age where you decide if you want to stay a "public figure" or retreat into a more private life. Ronald seems to be finding a middle ground. He isn't chasing the algorithm like he used to, and honestly, that’s probably the healthiest move he could make.
If you’re looking to keep up with him, your best bet is following his verified social accounts rather than relying on old YouTube uploads. The "kid" we all knew is gone—he's a young man now.
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Next steps for fans: If you want to see his latest evolution, check his most recent TikTok posts. They give a much clearer picture of his current style and personality than any 2019 Minecraft video ever could. You might also want to look into Karina’s updates, as the siblings still share a close bond even if they aren't filming "Last to Leave" challenges every week.