Interest Calculator
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Simple Interest Results
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Interest Earned
$0
Total Amount
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Compound Interest Results
$0
Interest Earned
$0
Total Amount
About the Interest Calculator
Our Interest Calculator helps you estimate how your money can grow over time with both simple and compound interest calculations.
Key Features
- Simple Interest: Calculate interest earned on principal amount only
- Compound Interest: Calculate interest on both principal and accumulated interest
- Flexible Time Periods: Calculate for years, months, or days
- Multiple Compounding Frequencies: Annual, semi-annual, quarterly, monthly, or daily
- Visual Growth Chart: See how your investment grows over time
Formulas Used
Simple Interest:
I = P × r × t
A = P + I
Where:
I = Interest amount
P = Principal amount
r = Annual interest rate (in decimal)
t = Time period in years
A = P + I
Where:
I = Interest amount
P = Principal amount
r = Annual interest rate (in decimal)
t = Time period in years
Compound Interest:
A = P × (1 + r/n)^(n×t)
I = A - P
Where:
A = Final amount
P = Principal amount
r = Annual interest rate (in decimal)
n = Number of compounding periods per year
t = Time period in years
I = A - P
Where:
A = Final amount
P = Principal amount
r = Annual interest rate (in decimal)
n = Number of compounding periods per year
t = Time period in years
Who Uses This Tool?
Investors: Project returns on savings and investments.
Borrowers: Understand interest costs on loans.
Students: Learn about interest calculations.
Financial Planners: Help clients with savings strategies.