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Simple Interest Calculator
Calculate simple interest on loans and investments
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Financial Calculators ✅ Free to Use
Simple Interest Calculator
Calculate simple interest on loans and investments. Simple interest is calculated only on the principal amount.
$11,500.00
Final Amount
$1,500.00
Interest Earned
15.0%
Total Return
Investment Summary
Principal Amount: $10,000.00
Annual Interest Rate: 5%
Time Period: 3 years
Interest Per Year: $500.00
Final Amount: $11,500.00
Total Interest: $1,500.00
Total Return: 15.0%
Interest Type: Simple Interest
Year-by-Year Growth
| Year | Balance | Total Interest | Yearly Interest |
|---|---|---|---|
| 1 | $10,500.00 | $500.00 | $500.00 |
| 2 | $11,000.00 | $1,000.00 | $500.00 |
| 3 | $11,500.00 | $1,500.00 | $500.00 |
Simple Interest Formula
I = P × r × t
A = P + I
A = P + I
I = Interest earned
A = Final amount
P = Principal amount
r = Annual interest rate (decimal)
t = Time in years
Your calculation: I = 10,000 × 0.0500 × 3
Simple vs Compound Interest
📊 Simple Interest
Interest is calculated only on the principal amount. Growth is linear.
Your result: $11,500.00
📈 Compound Interest (Monthly)
Interest is calculated on principal + accumulated interest. Growth is exponential.
Would be: $12,075.00