.... or just =ROUNDUP((A1-DATE(2006,1,0))/7,0) ?
--
David Biddulph

"Jacob Skaria" wrote in message
...
With the date in A1
=ROUNDUP(DATEDIF(DATE(2006,1,0),A1,"d")/7,0)

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---------------
Jacob Skaria


"spudsnruf" wrote:

Hi,

I understand how to use the weeknum() function to conert a date to a week
number, but this is only useful if need to convert 1 year. What should I
do
to convert 4 consecutive years to a week number, so all weeks numbers are
not
the same. e.g I want to make January 1st 2006 as week '1' and January 1st
2007 '53' instead of 1 again. Thanks very much.