100 in Savings Account Calculator

This calculator helps you determine how much money you'll have in a savings account after a certain period, considering the interest rate and compounding frequency. It's useful for budgeting, financial planning, and understanding the power of compound interest.

How to use this calculator

To use the savings account calculator:

Enter the initial amount of money you want to save (the principal).
Specify the annual interest rate (APR) offered by your savings account.
Choose how often the interest is compounded (annually, monthly, daily, etc.).
Enter the number of years you plan to keep the money in the account.
Click "Calculate" to see your future balance.

The calculator will show you the future value of your savings, taking into account compound interest. You can also view a chart showing how your savings grow over time.

Formula used

The future value of a savings account is calculated using the compound interest formula:

A = P × (1 + r/n)^nt

Where:

A = the future value of the investment/loan, including interest
P = the principal investment amount (the initial deposit or loan amount)
r = the annual interest rate (decimal)
n = the number of times that interest is compounded per year
t = the time the money is invested or borrowed for, in years

This formula calculates the amount of money accumulated after n years, including interest.

Worked example

Let's say you deposit $100 in a savings account with an annual interest rate of 5%, compounded monthly. After 10 years, your balance would be:

A = 100 × (1 + 0.05/12)^12×10

A = 100 × (1 + 0.004167)¹²⁰

A ≈ 100 × 1.6470

A ≈ $164.70

This example shows how compound interest can grow your savings over time, even with a relatively low interest rate.

Frequently Asked Questions

What is compound interest?: Compound interest is interest calculated on the initial principal and also on the accumulated interest of previous periods. This means your money grows exponentially over time.
How often should interest be compounded?: The more frequently interest is compounded, the faster your money grows. Most savings accounts compound interest monthly, but some offer daily or even continuous compounding.
Is this calculator accurate for all savings accounts?: This calculator provides an estimate based on standard compound interest formulas. Actual results may vary slightly depending on your bank's specific calculation methods and rounding practices.
What happens if I withdraw money from the account?: Withdrawing money from your savings account will reduce your balance and may affect the interest earned. This calculator assumes no withdrawals during the specified period.
Can I use this calculator for retirement planning?: While this calculator can help estimate future savings, it's not designed for complex retirement planning. For more comprehensive retirement calculations, consider using dedicated retirement calculators.