Calculatrice d’intérêts
Trouvez le montant final et les intérêts, simples ou composés — capitalisés chaque année, semestre, trimestre, mois ou jour.
Résultat
Saisissez les valeurs et appuyez sur Calculer pour voir le résultat.
Formule
Simple interest: principal × yearly rate (as a decimal) × years.
Compound interest: the rate is split over n periods a year, and interest earns interest.
Comment utiliser cette calculatrice
- Choose simple or compound interest and enter the starting amount, the yearly rate in % and the time in years.
- For compound interest, choose how often interest is added. Money is shown to 2 decimal places.
Exemple corrigé
1000 at 5% a year for 3 years, compounded yearly
r = 5% = 0.05, n = 1 and nt = 3.
A = 1000 × 1.05³ = 1157.625, which rounds to 1157.63.
Interest = 1157.63 − 1000 = 157.63; the effective annual rate is exactly 5%.
Questions fréquentes
What is the difference between simple and compound interest?
Simple interest is only paid on the starting amount. Compound interest is also paid on interest already added, so it grows faster.
What is the effective annual rate?
The rate you really earn in a year once compounding is included — also called the APY. Monthly compounding at 5% gives about 5.1162%.