Interest Calculator
Calculate simple interest, compound interest, continuous compounding, and loan amortization
Investment Details
Compounding
Formula
Where A is final amount, P is principal, r is rate, n is compound frequency, t is time
$10,000.00
$6,470.09
$16,470.09
Compound Stats
Effective Annual Rate
5.12%
Growth Multiple
1.65×
Growth Projection
Yearly Breakdown
Comparison
Simple
$15,000.00
Compound
$16,470.09
Continuous
$16,487.21
Comparison at 10 years with 5% rate
Understanding Interest Types
Simple Interest
Interest calculated only on the principal. Linear growth. Common in short-term loans and savings bonds.
Compound Interest
Interest on principal plus accumulated interest. Exponential growth. Most common in savings accounts and investments.
Continuous
Interest compounded infinitely. Maximum possible return. Theoretical limit of compound interest.
Amortized Loan
Fixed payments over time. Early payments mostly interest, later mostly principal. Common in mortgages and car loans.