Enter an initial (current) value, growth rate, and number of periods to instantly calculate the compounded final value and total growth. It covers both compounding an initial investment and projecting the future value of a current metric: the same formula either way.
Enter values above to see results.
Final Value = Initial × (1 + Rate / 100) ^ Periods'Compound growth' and 'growth projection (future value)' differ only in name and context: the calculation is identical. Both use Final Value = Initial × (1 + Rate / 100) ^ Periods. Working out what an initial 10,000 becomes after growing 10% a year for five years, and projecting what this month's 5,000 users become after a year of 8% monthly growth, are the exact same problem in formula terms.
So putting a principal amount in the initial value field makes it a compound final-value calculator, while putting in a current business metric: revenue, users, traffic: makes it a growth projection calculator that looks into the future.
The key is that each period's growth applies to the accumulated total so far, not the original value. Simple growth adds the same amount each period, but compounding applies the rate to the grown value, so the increase accelerates over time. The longer the horizon and the higher the rate, the more dramatically compound and simple growth diverge.
Enter a negative rate to model compound decline, where the value shrinks by a fixed percentage each period: useful for churn-driven user decline or depreciation scenarios.
Any period unit works as long as it matches the rate: use months if your rate is monthly, years if it's annual. Because the same starting value can end up very differently with small changes to rate or periods, entering optimistic, base, and conservative scenarios side by side helps you size the range of outcomes.
Everything runs in your browser and your inputs are never sent to a server. Note that a projection assumes a constant rate every period, so if growth varies, split the horizon into segments and calculate each.
What it is, who it's for, how it works and why you'd use it.
A Compound Growth Calculator applies a growth rate repeatedly over a number of periods to compute the final value. Compounding an initial investment and projecting a current metric into the future both use Final Value = Initial × (1 + Rate / 100) ^ Periods, so this one calculator handles both.
It is for PMs, startup founders, investors, and business owners projecting revenue, users, or investments that grow at a constant periodic rate.
Final Value = Initial Value × (1 + Rate / 100) ^ Periods. Put your current metric in the initial value field and the result is your future projection.
Compound growth diverges sharply from simple growth at scale: vary the rate and periods to compare growth scenarios and ground your planning in concrete numbers.