Either:
1 Multiply by 24 to convert to hours and change format to general or
number to display in decimal hours, or
2 Tools/ Options/ Calculation: select 1904 date system, but be careful
in that case if you are transferring date data to & fro between 1900 and
1904 systems.
--
David Biddulph

"David Crawt" <David wrote in message
...
I have a spreadsheet which works out my working hours. Sometimes, the
answer
is a minus but excel just shows a lot of hash signs.
It won't show the time as minus.

How can I fix this?