PDURATION function

This article describes the formula syntax and usage of the PDURATION function (function: A prewritten formula that takes a value or values, performs an operation, and returns a value or values. Use functions to simplify and shorten formulas on a worksheet, especially those that perform lengthy or complex calculations.) in Microsoft Excel.


Returns the number of periods required by an investment to reach a specified value.


PDURATION(rate, pv, fv)

The PDURATION function syntax has the following arguments.

  • Rate    Required. Rate is the interest rate per period.
  • Pv    Required. Pv is the present value of the investment.
  • Fv    Required. Fv is the desired future value of the investment.

PDURATION uses the following equation, where specifiedValue is equal to fv, and currentValue is equal to pv:

PDURATION equation


  • PDURATION requires that all arguments are positive values.
  • If argument values are not valid, PDURATION returns the #NUM! error value.
  • If arguments are not using valid data types, PDURATION returns the #VALUE! error value.


The workbook below shows examples of this function. Inspect them, change existing formulas, or enter your own formulas to learn how the function works.

To work more in-depth with the example data in Excel, download the embedded workbook to your computer, and then open it in Excel.

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Applies to:
Excel 2013, Excel Online