Compound Interest Calculator
Watch how regular contributions and time turn savings into serious growth.
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Investment Return Calculator
Enter what you invested, what it's worth now, and how long you held it to find your annualized return (CAGR).
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How this is different from Compound Interest
Our Compound Interest Calculator looks forward — projecting what a starting amount and contributions might grow into. This one looks backward — measuring the real annual return on an investment you already hold, based on where it started and where it stands today.
What CAGR actually tells you
CAGR (Compound Annual Growth Rate) smooths a bumpy real-world investment path into a single steady annual rate — the rate that, compounded every year, would take your starting value to your current value. It's not what happened year by year (real investments rarely grow evenly), but it's the standard way to compare returns across different investments and time periods on equal footing.
Using this to compare investments
CAGR is especially useful for comparing two very different holding periods — a stock held 3 years and a property held 12 years can be compared fairly on their annualized return, even though their total returns aren't directly comparable. Run each investment through this calculator and compare the CAGR, not just the total gain.