Compound Interest Calculator - easyetool

Compound Interest Calculator

Formula

A = P(1 + r/n)^(nt), where P = principal, r = annual rate, n = compounding frequency per year, t = years.

Examples

$1,000 at 5% for 10 years, compounded monthly = $1,647.01
$5,000 at 7% for 20 years, compounded annually = $19,348.42
$10,000 at 4% for 15 years, compounded quarterly = $18,167.94

How to Use

Enter your initial amount (principal).
Enter the annual interest rate.
Enter the number of years and how often interest compounds.

Frequently Asked Questions

What's the difference between compounding frequencies?

More frequent compounding (daily vs. annually) results in slightly higher returns because interest is calculated and added more often.

Does this account for additional contributions?

No — this calculates growth on a single lump sum. Regular contributions would require a separate running calculation.

Is this the same as a savings account calculator?

Yes, the same compound interest formula applies to savings accounts, CDs, and basic investment growth estimates.

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