Interest Calculator Savings Account Daily
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Reviewed by Calculator Editorial Team
Calculate daily interest earnings on your savings account with this daily interest calculator. Simply enter your principal amount, daily interest rate, and time period to see how much interest you'll earn each day.
How to Use This Calculator
Using this daily interest calculator is simple. Follow these steps:
- Enter the principal amount (the initial amount of money in your savings account).
- Input the daily interest rate (annual rate divided by 365).
- Specify the time period in days.
- Click the "Calculate" button to see your daily interest earnings.
The calculator will display the total interest earned and the final amount in your account after the specified period.
Formula Explained
The daily interest calculation uses the simple interest formula:
Daily Interest Formula
Interest = Principal × (Daily Interest Rate × Time in Days)
Final Amount = Principal + Interest
Where:
- Principal - The initial amount of money in your savings account
- Daily Interest Rate - The annual interest rate divided by 365
- Time in Days - The number of days the money is invested
Note
This calculator uses simple interest, not compound interest. For compound interest calculations, use our compound interest calculator.
Worked Example
Let's say you have $1,000 in a savings account with a daily interest rate of 0.01% (0.0001 in decimal). You want to know how much interest you'll earn in 30 days.
- Principal = $1,000
- Daily Interest Rate = 0.0001
- Time in Days = 30
Using the formula:
Calculation
Interest = 1000 × (0.0001 × 30) = $0.30
Final Amount = 1000 + 0.30 = $1,003.30
So, you would earn $0.30 in interest over 30 days, bringing your total to $1,003.30.
Frequently Asked Questions
What is a daily interest rate?
A daily interest rate is the annual interest rate divided by 365. For example, if your annual rate is 1%, the daily rate would be 1% ÷ 365 ≈ 0.00274%.
How often is interest calculated in a savings account?
Most savings accounts calculate interest daily, which means your balance grows slightly each day based on the daily interest rate.
Is this calculator accurate for all savings accounts?
This calculator provides an estimate based on simple interest. Some savings accounts may use compound interest, which would require a different calculation method.