Subscriber Growth Calculator
Projected dates for 1K, 10K, 100K, and 1M subscribers from your recent growth rate.
Percent per month — last-30-day gain ÷ current subs × 100.
Enter current subscribers and a monthly growth rate.
How it's computed: months to a milestone = log(milestone ÷ current) ÷ log(1 + rate). Compounding means early milestones take most of the time.
Same job, one API call
Runs in your browser — nothing is sent anywhere.
Questions
Why does the projection jump so much between milestones?
Compounding: the same monthly rate covers more distance each month as the base grows. Early milestones take most of the time; later ones arrive faster.
Should I enter gross or net growth?
Net — gains minus losses. Enter the monthly change YouTube Studio reports and unsubscribes are already folded into the rate.
What if my growth rate is flat or negative?
A zero or negative rate never reaches the next milestone — the calculator reports no date rather than projecting an impossible one.
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