Compound Interest Calculator
Calculate investment returns with compound interest. Find out how much you'll earn over time.
Enter initial investment amount
Annual interest rate
Number of years to invest
How often interest is compounded
Additional deposit each month (optional)
Calculation Formula
Compound interest:
A = P × (1 + r/n)^(n×t)
Where:
- A = final amount
- P = principal amount
- r = annual rate (as decimal)
- n = compounding frequency per year
- t = number of years
Calculation Examples
About Compound Interest Calculator
The compound interest calculator helps calculate final investment amount with interest capitalization. Compound interest means interest on interest, which significantly accelerates capital growth.
Use for investment planning, deposit return calculation, retirement savings estimation, long-term investment analysis.
Benefits
Capitalization Accounting
Accurate calculation with interest reinvestment
Regular Contributions
Support for monthly additional deposits
Different Frequencies
Choose compounding period
FAQ
What is compound interest?
Compound interest is interest calculated not only on the principal but also on previously earned interest.
What's the difference from simple interest?
Simple interest is calculated only on principal. Compound interest includes previously earned interest.
How does compounding frequency affect returns?
More frequent compounding grows capital faster. Monthly capitalization is more profitable than annual.
Why add regular contributions?
Regular additional deposits significantly increase final amount through compound interest effect.
How to calculate compound interest?
Use formula A = P × (1 + r/n)^(n×t), where P is principal, r is rate, n is frequency, t is time.