YEARFRAC

The result is the number of the years (including fractional part) between StartDate and EndDate.

Syntax

YEARFRAC(StartDate; EndDate; Basis)

StartDate and EndDate are two date values.

Basis (optional) is chosen from a list of options and indicates how the year is to be calculated.

Basis

Calculation

0 or missing

US method (NASD), 12 months of 30 days each

1

Exact number of days in months, exact number of days in year

2

Exact number of days in month, year has 360 days

3

Exact number of days in month, year has 365 days

4

European method, 12 months of 30 days each


Example

What fraction of the year 2008 lies between 2008-01-01 and 2008-07-01?

=YEARFRAC("2008-01-01"; "2008-07-01";0) returns 0.50.