Mark Rober has about 86.3 million YouTube subscribers, 6.7 million more than Justin Bieber, as of Nov 13, 2026. At the 30-day pace, Justin Bieber would not catch up.
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Mark Rober, with about 86.3 million YouTube subscribers to Justin Bieber's 79.6 million, a gap of 6.7 million as of Nov 13, 2026.
Never at the current pace. Mark Rober is growing faster than Justin Bieber over the last 30 days, so the gap widens by about 85.6K subscribers a day.
Over the last 30 days, Justin Bieber gains about 2.72K subscribers a day and Mark Rober gains about 88.3K subscribers a day.
