Compound Interest.
Plan your financial future.

Calculate investment growth with monthly contributions and custom compounding. Support for 30+ world currencies. All calculations done locally — 100% private.

Future Value
R$ 0,00
Total including interest
Total Invested
R$ 0,00
Principal + contributions
Total Interest Earned
R$ 0,00
Profit from compounding
Interest % of Total
0%
Return on investment
Effective Annual Rate
0%
Years to Double
0
Monthly Return
R$ 0
Investment Growth Over Time
How to use the compound interest calculator

Plan your investments and savings with our free compound interest calculator. Understand how your money grows over time with regular contributions and compound interest.

Quick start

  1. Choose your currency — Select from 30+ world currencies including USD, EUR, BRL, JPY, and more
  2. Enter initial investment — The starting amount you plan to invest
  3. Set interest rate & time — Your expected annual return and investment period
  4. Add monthly contributions — Regular additional investments (optional)
  5. Choose compounding frequency — Daily, weekly, monthly, quarterly, or annually
  6. View results — See future value, total contributions, and growth chart

Supported currencies (30+)

  • Americas — USD, CAD, BRL, MXN, ARS, CLP, COP, PEN, UYU, PYG, BOB, VES
  • Europe — EUR, GBP, CHF, SEK, NOK, DKK, RUB, TRY
  • Asia — JPY, CNY, INR, KRW, SGD, AED, SAR
  • Oceania & Africa — AUD, NZD, ZAR

Understanding the results

  • Future Value — Total amount including principal, contributions, and interest
  • Total Invested — Sum of your initial investment and all monthly contributions
  • Total Interest Earned — The profit generated by compound interest
  • Effective Annual Rate — Real annual return considering compounding frequency
  • Years to Double — How long it takes to double your money (Rule of 72)

Perfect for

  • Retirement planning and savings goals
  • Investment portfolio projections
  • Education fund calculations
  • Real estate investment analysis
  • Financial independence planning (FIRE)

All calculations are performed locally — no data is ever transmitted or stored. Your financial information stays completely private. Support for 30+ world currencies with real-time updates!