Future value of a principal amount is the value after a given amount of time at an assumed rate of growth. Compound interest considers the return on investment (or interest) to be reinvested and provides return as well.
Future value of principal value (considering compounding) and interest can be determined by below formulas
where FV is the future value, P is principal, r is the rate of interest, n is the number of times interest is compounded per unit time, t is the time of investment and I is interest