Enter your follower count at the start and end of a period to get your growth rate — the net percentage your audience grew. Add the period length in days and you also get net new followers and the average gained per day. No sign-up, nothing stored — the math runs in your browser.
Your follower count at the start of the period.
Your follower count at the end of the period.
Needed only for the per-day average.
Follower growth rate
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Enter your starting and ending follower counts.
Net new followers
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The difference between your ending and starting counts.
Formulas: growth rate = (ending − starting) ÷ starting × 100 · per-day average = net new followers ÷ days in the period. Nothing you type here is sent or stored.
Guide
Follower growth rate divides the change in your audience by the size you started from: growth rate = (ending followers − starting followers) ÷ starting followers × 100. Gaining 500 followers means something completely different at 1,500 followers (a 33% period) than at 150,000 (about 0.3%) — the percentage makes growth comparable across accounts, across platforms, and across time periods in a way raw counts never are.
It is also a net metric. Your ending count already includes everyone who unfollowed, so the rate reflects what you kept, not just what you attracted. That is why it can go negative — and why a negative period is real information rather than a display error: more people left than arrived, and the timing usually points at what changed.
Pick a period and stick to it. Most accounts track monthly — long enough to smooth daily noise, short enough to connect changes to causes — recording the count on the same day each month, per platform. Cross-platform totals hide which network is actually growing, so calculate each one separately before you sum anything.
When periods don’t line up — a 28-day February against a 31-day March, or a campaign week against a baseline month — use the per-day average this calculator adds when you enter a period length. Net new followers ÷ days puts unequal windows on the same scale.
Finally, pair growth with engagement. A giveaway or a bot wave can spike the growth number without adding people who care; if growth jumps while engagement rate sinks, investigate before you celebrate.
There is no universal benchmark worth printing. Published growth averages differ by platform, niche, account size, and — most of all — methodology, so treat any single figure as direction rather than a target. Small accounts routinely post monthly percentages that are mathematically out of reach for large ones, because the denominator does the work: a rate that is unremarkable at 800 followers would be extraordinary at 800,000.
The benchmark that actually drives decisions is your own trailing average. Compute the rate for the last few periods, then try to beat it — and annotate each period with what you changed (posting frequency, formats, topics) so the wins are repeatable. Direction and trend beat any number a PDF promises.
Subtract your starting follower count from your ending count, divide by the starting count, and multiply by 100. Example: starting at 2,400 and ending at 2,580 gives (2,580 − 2,400) ÷ 2,400 × 100 = 7.5% growth for the period.
It depends on platform, niche, and especially account size — small accounts can post double-digit monthly percentages, while large accounts rarely do. Steady positive growth that compounds month after month is strong for most established accounts; your own trailing average is the most useful benchmark.
Yes — when more people unfollow than follow, the ending count is lower than the starting count and the rate goes negative. Small dips are normal churn; a sharp drop tied to a specific post or topic is direct feedback about what your audience signed up for.
Monthly is the common default: long enough to smooth daily noise, short enough to tie changes to causes. Whatever you choose, keep the period consistent — and use the per-day average to compare windows of different lengths fairly.
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