Compound Interest Calculator – Future Value & Growth
Free compound interest calculator with contributions. Project future value by compounding frequency, APY estimate, and interest earned — private, no signup.
Private: calculation runs only in your browser.
Finance Calculator
Compound Interest Calculator
Future value
$54,713.58
Est. APY (effective): 7.23%
Interest earned$20,713.58
Total deposited$34,000.00
Contributions over time: $24,000.00 (monthly deposits). Estimates only — ignores taxes and fees.
Related tools
All toolsWhat Is a Compound Interest Calculator?
A compound interest calculator projects how a balance grows when interest is added to principal and then earns interest itself. Add regular contributions to model savings or investment accounts more realistically.
Compound Interest Formula
A = P(1 + r/n)^(n t)
APY = (1 + r/n)^n − 1
Frequently Asked Questions
What is the compound interest formula?
A = P(1 + r/n)^(nt). Contributions are compounded for the remaining time after each deposit.
What is the difference between APR and APY?
APR is nominal; APY includes compounding effects over a year.
Is this compound interest calculator free?
Yes — free and private.