Project how a balance grows with periodic compounding

Savers and analysts use it to project how a balance changes under periodic compounding over a chosen duration.

Project how a balance grows with periodic compounding. Everything runs in your browser, so the values you enter are never uploaded, shared, or stored.

How to use

Enter the starting principal in the first field of the form.
Type the annual rate as a percentage, without adding the percent sign.
Set the term in years and the number of times interest compounds per year.
Run the calculation to display the projected balance over the period.
Review the final amount and the share coming from accumulated interest.

Example

The sample input describes a balance, an annual rate, a term and a compounding frequency. The tool reads those four values and shows a projection. Focus on the final amount and the part coming from interest; change the compounding frequency to see how the term affects the result. The result is meant to help you compare scenarios, not to predict a specific financial product.

Input

Limits and formats

The tool does not include regular deposits, withdrawals or one-time contributions.
Fees, taxes and inflation are outside the projection.
The output is a mathematical projection, not a promise of future returns.
Check the compounding convention when comparing different financial products.
A variable rate or changing conditions cannot be represented by a single figure.

Where processing happens

All processing happens in your browser. The principal, rate, term and compounding frequency stay on your device. Nothing is uploaded to an outside service. You can clear the fields or close the tab when you are done. No information is kept after you leave the page. The calculation uses only the figures you provide.

Frequently asked questions

Can I add monthly deposits?

No, the fields cover the starting principal, the rate, the term and the compounding frequency. To include regular deposits, you would need a different calculation or add each contribution separately along with its own interest.

Why does the result change when I adjust compounding?

Compounding adds interest to the balance more or less often. More frequent compounding can slightly raise the projection for the same rate and term because interest starts earning interest sooner.

Are the displayed figures guaranteed?

No, they depend only on the values you enter and assume a constant rate. Real outcomes may include fees, taxes, rate changes or other events that this calculator does not represent.