NPER function

description:

Returns the number of periods for an investment based on periodic, constant payments and constant interest rate.

 

syntax:

=NPER( ratepmtpv[fv][type] )

 

required arguments:

rate The interest rate per period.
pmt The payment made each period.
pv The present value, or a total value of all payments.

 

optional arguments:

[fv] The future value.
[type] 0 = end of period. 1 = beginning of period. Default is 0.