Compound Interest Calculator

Find out how your investment will grow over time with compound interest.

Initial investment:

$ $ Enter the amount of money you will invest up front

Regular addition:

$ $ Decide how much money you will add, and how often

Interest rate:

% Enter the rate of interest you expect to earn on your investment

Interest is compounded:

Choose how often interest is calculated on your investment

Time Horizon:

Select the measure of the length of time your investments will grow, represented in years or months.

Years to grow: Months to grow:

Decide how long you will hold your investment

Results

Total value of your investment:

Total interest earned:

Your initial investment of plus your investment of at an annualized interest rate of will be worth after when compounded .

The longer your time horizon, the more benefit you’ll see. Learn more about growing your savings with compound interest.

Use left and right arrows to navigate between tabs.

Graph
Yearly Table
Monthly Table

Any results or calculations displayed on this site are made available for information purposes only, and do not constitute financial or legal advice. By using this calculator, you agree to our Website and Social Media Terms of Use and Privacy Policy.

Assumptions

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For the purpose of this calculation, we assume that your investment earns interest income that compounds at the end of the compounding period you choose. Any additional contributions are applied at the end of each month.

Results are displayed by compounding period. Where the contribution frequency is greater than the compounding period (as in the case of weekly and bi-weekly contributions), annual contributions are divided over the number of compounding periods. For example, if you make contributions weekly that compound monthly, the calculations divide the year's 52 weeks into 12 months x 4.33 weeks each.