Visualisez la croissance exponentielle de votre placement avec des versements mensuels.
Saisissez les paramètres d'investissement à gauche pour voir comment les intérêts composés peuvent faire fructifier votre argent
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.
Versement mensuel 500 $, capitalisation mensuelle :
| Années | Versements | Intérêts | Solde final |
|---|---|---|---|
| 10 | 60 000 $ | 29 500 $ | 89 500 $ |
| 20 | 120 000 $ | 172 000 $ | 292 000 $ |
| 30 | 180 000 $ | 610 000 $ | 790 000 $ |
Règle de 72 : divisez 72 par le taux pour obtenir les années pour doubler. À 7 %, double tous les 10,3 ans. S&P 500 historique 10 % nominal / 7 % réel.
Cross-checked against authoritative formulas (IRS, NIST, ACSM) and updated for 2025/2026 tax years and rates.
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FAQ
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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.
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