## Lump Sum Number of Periods Calculator

The lump sum number of periods calculator is used to calculate the number of periods (n), it takes to increase the present value of a lump sum to its future value at a discount rate of i%.

## Simple Interest Doubling Time Formula

The simple interest doubling time equation calculates the number of periods it takes to double the value of an investment when the investment earns simple interest at a given discount rate (i).

## Number of Periods Annuity Formula FV

This number of periods annuity formula FV calculates the number (n) of annuity payments required to provide a given future value (FV). The annuity formula assumes payments (Pmt) are made at the end of each period, and a discount rate i is applied.

## Number of Periods Annuity Formula PV

This number of periods annuity formula PV calculates the number (n) of annuity payments required to provide a given value today PV (present value). The annuity formula assumes payments (Pmt) are made at the end of each period, and a discount rate i is applied.

## Doubling Time Formula Continuous Compounding

The doubling time equation continuous compounding calculates the number of periods it takes to double the value of an investment when the interest is compounded continuously at a given discount rate (i).

## Excel NPER Function

The Excel NPER function is one of many Excel financial functions, and can be used to calculate the number of periods for a lump sum, annuity or annuity due to grow to a future value. In addition the function can also be used to calculate the number of periods it takes for a loan to be repaid.

## Doubling Time Formula

The doubling time equation calculates the number of periods it takes to double the value of an investment at a given discount rate.