Interest Rate Calculator
Calculate simple interest, compound interest, and effective annual rates. Compare different interest scenarios and understand how interest affects your investments or loans.
Simple Interest Calculator
Simple Interest Formula
Interest = Principal × Rate × Time
Compound Interest Calculator
Compound Interest Formula
A = P(1 + r/n)^(nt)
Where: A = Final Amount, P = Principal, r = Annual Rate, n = Compounding Frequency, t = Time
Where: A = Final Amount, P = Principal, r = Annual Rate, n = Compounding Frequency, t = Time
Effective Annual Rate Calculator
Effective Annual Rate Formula
EAR = (1 + r/n)^n - 1
Where: r = Nominal Rate, n = Compounding Frequency
Where: r = Nominal Rate, n = Compounding Frequency
Interest Rate Comparison
Interest Rate Tips
- Compound interest grows exponentially over time - start investing early
- Higher compounding frequency means faster growth of your investment
- Even small differences in interest rates can significantly impact long-term returns
- For loans, lower interest rates and higher payments reduce total interest paid