YouTube Growth Calculator
Project subscribers and views forward from your last 30 days of growth.
Percent per month. Used when a 30-day gain field is empty.
Enter a current count plus its 30-day gain — or a monthly rate — to see projections.
How it's computed: monthly rate = 30-day gain ÷ current, then current × (1 + rate)^months. Channels compound, so the projection compounds too — treat it as a scenario, not a forecast.
Same job, one API call
Runs in your browser — nothing is sent anywhere.
Questions
Is linear or compound growth more realistic?
Channels compound, so the calculator compounds your monthly rate. Treat the result as a scenario, not a forecast — one breakout video breaks every projection.
Where does the monthly rate come from?
From your own numbers — last month’s gain divided by the starting count. Pull the 30-day figures from YouTube Studio rather than entering a target.
How far ahead is the projection useful?
A few months at most. Compounding amplifies any error in the monthly rate, so re-run it with fresh numbers instead of trusting an old output.
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