Finance / Grow savings faster
Compound Interest Calculator
Project how your savings balance grows when interest compounds over time. Adjust rate, compounding frequency, and recurring contributions to see your future value.
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Calculator
Follow the steps below and update the fields to see instant results.
How much you start with today.
Expected yearly rate of return.
How many times interest compounds per year.
Investment horizon in years.
Total added over each year.
Growth summary
Results update instantly as you change the inputs.
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Year-over-year growth
Compare the balances driven by contributions and interest earned over time.
How it works
Compounding multiplies your returns by adding earned interest back into the balance. This calculator first spreads your annual rate across each compounding period, then iterates through every period to add contributions and apply growth.
Use the results to compare savings strategies: increase contributions, extend the time horizon, or adjust your target return. Even slight differences in rate or frequency can unlock thousands of dollars thanks to exponential growth.
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