Free Financial Calculator
Compound Interest Calculator
Project long-term growth with flexible compounding and recurring contributions.
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Complete the fields and select Calculate to view the estimate.
How This Calculator Works
The calculator simulates contributions and growth across monthly periods, converts the selected nominal rate to an effective monthly rate, and applies contributions at the beginning or end of the period. Inflation-adjusted value is shown separately when an inflation estimate is supplied.
Frequently Asked Questions
Why does contribution timing matter?
Beginning-of-period contributions receive one additional growth period compared with end-of-period contributions.
Is the interest rate guaranteed?
No. The rate is an assumption entered for planning purposes.
What is inflation-adjusted value?
It estimates the future balance in today’s purchasing-power terms.