Follower Growth Calculator
See how fast your audience is growing: net change, average daily gain, compound daily and monthly growth rates, and a 90-day projection. Calculated in your browser.
Net growth
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Show the math
Net growth is the change over the period; the compound daily rate is what links your two counts:
daily rate = (end ÷ start)1/days − 1
projection = end × (1 + daily rate)90
The projection assumes your current compound rate holds steady, real growth speeds up and slows down, so treat it as a trend line, not a promise. All math runs in your browser.
What this does
A follower growth calculator shows how fast your audience is growing — net change, average daily gain, compound daily and monthly growth rates, and a 90-day projection.
How to use it
- Enter your starting count.
- Enter your current count.
- Enter the number of days.
- Read the rates and projection.
How it works
The projection assumes your current compound rate holds. Real growth speeds up and slows down, so treat it as a trend line rather than a guarantee.
daily rate = (end ÷ start)^(1 ÷ days) − 1
Understanding your result
The projection simply extends your current compound rate, so it is a trend line, not a forecast. Real growth comes in bursts around viral posts and stalls between them, so revisit it often. A steady compound daily rate matters more than any single viral day.
Example
Going from 1,000 to 1,300 in 30 days is about 0.9% a day.
Sources & methodology
Last updated .
Frequently asked questions
What is the compound daily growth rate?
It is the steady daily percentage that turns your starting count into your current count over the period — (end ÷ start) raised to the power of 1÷days, minus one.
How accurate is the 90-day projection?
It assumes your current compound rate holds steady. Real growth speeds up and slows down, so treat the projection as a trend line rather than a guarantee.
Is my data stored?
No. Your follower counts are processed entirely in your browser.
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