Visualize o crescimento exponencial do seu investimento com aportes mensais e reinvestimento.
Insira os parâmetros de investimento à esquerda para ver como os juros compostos podem fazer seu dinheiro crescer
Your initial investment earns interest, which is added to your principal.
Interest starts earning interest, creating exponential growth over time.
Monthly investments significantly accelerate your wealth building.
Aporte mensal US$ 500, capitalização mensal:
| Anos | Aportes totais | Juros ganhos | Saldo final |
|---|---|---|---|
| 10 | US$ 60 mil | US$ 29,5 mil | US$ 89,5 mil |
| 20 | US$ 120 mil | US$ 172 mil | US$ 292 mil |
| 30 | US$ 180 mil | US$ 610 mil | US$ 790 mil |
Regra do 72: divida 72 pela taxa para anos até dobrar. A 7%, dobra a cada 10,3 anos. S&P 500 histórico 10% nominal / 7% real.
Cross-checked against authoritative formulas (IRS, NIST, ACSM) and updated for 2025/2026 tax years and rates.
No server roundtrip. All math runs in your browser so results appear the moment you finish typing.
We never collect, store, or transmit your inputs. Every calculation runs locally in your browser.
Each calculator includes the formula, plain-English explanation, and FAQs so you understand the result.
Estimates only. Calculator results are for educational and planning purposes — not professional advice. For binding decisions on taxes, investments, health, or legal matters, consult a qualified professional.
FAQ
Everything you need to know about this calculator. Can't find what you're looking for? Email our team.
It depends on the rate and time. $10,000 at 7% for 30 years with monthly compounding grows to $81,169. At 10% for 40 years, it grows to $452,593. Our compound interest calculator lets you enter any principal, rate, and time to see the exact future value. The compound interest calculator results show how much is from contributions vs interest earned.
How it works
Our compound interest calculator lets you project the future value of an investment with regular contributions and compound growth in five steps.
Type the amount you have already saved or invested. Use 0 if you are starting from scratch.
Type the expected annual return as a percentage. A diversified stock portfolio has historically returned about 7% after inflation.
Type how many years you plan to let the money grow. Compound interest is most powerful over long horizons.
Type how much you add each month. Even small regular contributions compound dramatically over decades.
The calculator shows the final balance, total contributions, interest earned, and a year-by-year growth table.
See how your savings grow over time with monthly contributions.
Estimate returns on lump-sum or periodic investments over time.
Project the future value of a present sum at a given rate.
Find the present value of a future sum of money at a given rate.
Find the annual percentage yield on a savings account or CD.
Calculate return on investment for any project or asset.
Sponsored