Compound Interest Calculator

Explore how your savings could grow with Compound Interest Calculator, a compound interest calculator for long-term planning. BUILD YOUR OWN SIMULATION Enter your starting capital, regular contribution, annual return and duration using precise numeric fields. Adjust contribution and compounding frequency, contribution growth and tax assumptions in advanced mode. UNDERSTAND THE RESULTS See the projected balance, contributions and interest through charts and a year-by-year table. Compare two scenarios and explore the contribution needed to reach a savings goal. KEEP YOUR SIMULATIONS Save calculations on your device, rename them, compare them later and undo an accidental deletion. Switch between light, dark and system themes. LOCAL CALCULATIONS, ANALYTICS AND DIAGNOSTICS The calculator works offline and does not require an account. Your simulation names and financial inputs are stored locally and are not sent to Analytics or Crashlytics. Analytics follows Google’s analytics-storage consent; unknown or denied signals do not permit collection. You can review available choices in Settings → Privacy and cookies. Crash reports are optional and off by default. Enable or disable them in the privacy options in Settings. Saved diagnostics refusals are preserved. Withdrawing Analytics does not disable diagnostics. NATIVE ADVERTISING The Android app contains one Google AdMob native ad in History after the third saved simulation. There are no ads in the calculator or results. Advertising choices are managed through Google UMP and can be reviewed in Settings → Privacy and cookies when available. Declining personalized ads may still allow limited or contextual ads. Your financial inputs and simulation names are not added to ad requests. For full details, see the privacy policy linked in this listing. Projections are mathematical illustrations based on your assumptions. They do not guarantee returns and are not personalized financial advice. Support: [email protected] The app interface is available in English and Spanish. A one-time purchase can remove ads.

Improved tax and return calculations after withdrawals.