Interest Rate Calculator

Calculate simple and complex interest rates

Simple Interest Calculator

Calculate simple interest on any principal amount using the standard SI = (P × R × T) / 100 formula.

Principal Amount ($)

$1K$100,000$1Cr

Interest Rate (p.a.)

1%8%30%

Time Period (Years)

0.5yr5 yrs30yrs

Simple Interest

$40,000

Total Amount

$140,000

Interest %

40.0%

SI = (P × R × T) / 100

Principal (P)$100,000

Rate (R)8% p.a.

Time (T)5 years

Simple Interest$40,000

Total Amount (P + SI)$140,000