Compound Interest Calculator
Estimate future value, total contributions, and interest earned from compound growth.
Calculate Compound Interest
Enter your investment details to estimate compound interest.
Formula
Compound interest means interest is earned on both the original amount and previous interest.
How compound interest works
Compound interest is the process of earning interest on both your original amount and the interest that has already been added. Over time, this can create powerful growth.
Why compounding frequency matters
The more often interest is compounded, the more frequently interest is added to the balance. Monthly or daily compounding can produce slightly higher results than annual compounding.
Planning insight
Small changes in time, interest rate, and starting amount can have a large effect over long periods. Quietly, time is often the most powerful part of compound growth.
Frequently Asked Questions
What is compound interest?
Compound interest is interest earned on both the original amount and any interest already accumulated.
Is compound interest better than simple interest?
Compound interest usually grows faster than simple interest because previous interest is added back into the balance.
What does compounding frequency mean?
Compounding frequency describes how often interest is added to the balance, such as annually, monthly, or daily.