Compound Growth Calculator
Compound Growth Calculator - a browser-based calculators utility.
Browser tool
About Compound Growth Calculator
Compounding over a period, in both directions: what a value becomes at a given rate, and what annual rate is implied by a start and an end figure. The second is CAGR, and it is the number people most often want when comparing two things that grew over different timescales. Free online, and nobody asks who you are. The projection is computed locally from the numbers you enter.
How to use it
- Project forwardEnter the starting value, the rate and the number of periods to see what it becomes.
- Or solve for the rateEnter where it started, where it ended and how long that took, and read the compound annual rate that connects them.
- Mind the periodA rate compounding monthly and the same rate compounding annually give different answers, and the gap widens the longer you run it.
What CAGR hides
A compound annual growth rate is the single smooth rate that would have produced the observed end value. It says nothing about the path: a figure that doubled then halved and one that crept up steadily can share a CAGR. It is a fair summary for comparison and a poor description of volatility.
What it does not do
- Constant rates do not exist outside a spreadsheet. This models the assumption, not the world.
- It ignores contributions, withdrawals, fees and tax, all of which change the outcome materially over long periods.
Questions people ask
- What is CAGR and when should I use it?
- The constant annual rate that would take a starting value to an ending value over a period. Use it to compare things that grew over different lengths of time, and do not read it as a description of how steady that growth was.
- Why does compounding frequency matter?
- Because interest is added to the balance more often, and subsequent interest is then earned on a larger figure. The same nominal rate compounded monthly beats one compounded annually, which is why the frequency is stated.
Questions about ToolsVerse itself — privacy, cost, what happens to your files — are answered in the frequently asked questions.
Related tools
The tools people most often need alongside Compound Growth Calculator.
Can’t find the tool you need?
Tell us what you’re looking for and we’ll consider adding it.