Compound Interest Calculator
Calculate compound interest over time with different compounding periods
Future Value:
$0.00
Total Interest Earned:
$0.00
Total Contributions:
$0.00
Annual Breakdown:
Compound Interest Formula
Standard Compound Interest:
A = P(1 + r/n)nt
Where:
A = Future value
P = Principal amount
r = Annual interest rate (decimal)
n = Compounding periods per year
t = Time in years
A = Future value
P = Principal amount
r = Annual interest rate (decimal)
n = Compounding periods per year
t = Time in years
Continuous Compounding:
A = Pert
The Power of Compounding
$1,000 at 5% for 10 years:
Simple: $1,500 | Compound: $1,628.89
$1,000 at 7% for 20 years:
Simple: $2,400 | Compound: $3,869.68
$1,000 at 10% for 30 years:
Simple: $4,000 | Compound: $17,449.40
Rule of 72
Years to double = 72 ÷ Interest Rate
Example: 72 ÷ 6% = 12 years to double
Example: 72 ÷ 6% = 12 years to double