Calculate Interest solve for I I Prt. This simple interest calculator offers you an output by calculating both principal as well as interest. SI Prt A PSI Where A Final amount SI Simple interest P Principal amount Initial Investment r Annual interest rate in percentage t Time period in years.
Calculate rate of interest in decimal solve for r r I Pt.
The simple interest amount is equal to the principal amount times the annual interest rate divided by the number of periods per year m times the number of periods n. If you want to calculate simple interest over more than 1 year calculate the interest earnings using the principal from the first year multiplied by the interest rate and the total number of years. If you have borrowed money from a bank or building society for a mortgage. Calculate Principal Amount solve for P P I rt.