Unit Converter
Compound Interest Calculator
Project future value and interest earned from principal, annual rate, time, and compounding frequency.
Formula and usage notes
future value = principal x (1 + rate / compounds)^compounds x years.
Project future value and interest earned from principal, annual rate, time, and compounding frequency.
Practical examples
5000 at 5% compounded monthly for 10 years grows to about 8235.05.
More frequent compounding helps, but rate and time usually matter more.
Do not treat this as an investment guarantee.
Frequently asked questions
What inputs does this calculator need?
Principal, Annual rate, Years, Compounds per year.
How should I round the result?
Keep extra digits while comparing values, then round for the final decision or report.
Can I reuse the result in another calculation?
Yes, but preserve the original inputs and units so the next calculation stays traceable.