Compound Interest Calculator

Uses periodic compounding: FV = P(1 + r/n)^(nt). Enter principal, nominal annual rate, time in years, and compounding periods per year.

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如何使用

  1. 1Enter starting principal.
  2. 2Enter annual nominal interest rate (%).
  3. 3Enter years and compounding frequency (e.g. 12 for monthly).
  4. 4Review future value and interest earned.

常见问题

Contributions or withdrawals?
This version is lump-sum only; add a spreadsheet for periodic deposits.
Effective annual rate?
This uses nominal APR with stated compounding; effective rate can differ.

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