Calculadora de juro composto
Enter starting principal, annual rate, years and compounding frequency to see the future value and interest earned.
Esta página traduz o original em inglês. O motor de cálculo é o mesmo.
Resposta rápida
It applies compound interest for the frequency you choose and optionally adds regular contributions if the form supports them.
Exemplo: 10,000 at 5% compounded annually for 20 years is about 26,533 before tax and fees.
Os cálculos seguem a fórmula desta página; o arredondamento e as unidades podem alterar o último dígito. Trate o resultado como uma estimativa educativa.
* Estimativa. Os valores reais podem variar consoante as hipóteses.
O que faz esta calculadora
It applies compound interest for the frequency you choose and optionally adds regular contributions if the form supports them.
Para quem é
Savers and students who want the growth path, not a product recommendation.
Como funciona o cálculo
Each period the rate is r/n. After nt periods the balance is P(1+r/n)^(nt), plus any contribution schedule on the form.
Fórmula
A = P(1 + r/n)^(n t)
Pressupostos
- The rate stays constant.
- No tax drag unless you model it yourself.
- Deposits occur on the schedule implied by the fields.
Limitações
- Not investment advice.
- Inflation and fees are excluded unless you reduce the rate yourself.
Como usar esta ferramenta
- 1Enter principal and annual rate.
- 2Set years and compounding frequency.
- 3Read future value and interest.
FAQ
- What is the Rule of 72?
- 72 divided by the annual rate roughly estimates years to double. It is an approximation, not this calculator’s output.
- Daily vs monthly?
- More frequent compounding earns slightly more at the same nominal annual rate.