Assuming a field named Hours:
=Fix([Hours]) & Format(60 * ([Hours] - Fix([Hours])), "\:00")
You could use:
= Format([Hours] / 24, "h:nn")
but that might be less accurate (rounding issues) and would have problems if
the time was over 24 hours.

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Allen Browne - Microsoft MVP. Perth, Western Australia.
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> Hello members,
> for readability of my users, I need transform a field that contain hours
> and
> minutes in decimal (i.e. 6,83) in hh:mm (i.e. 6:50).
> Thanks in advance for help.
Giangi - 25 Jul 2006 12:15 GMT
Many thanks Allen: you have resolved my problem (first guesstimate is the
best because my data is over 24 hours -it's amount field-).
Good job.

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Giangi El Dotor
> Assuming a field named Hours:
> =Fix([Hours]) & Format(60 * ([Hours] - Fix([Hours])), "\:00")
[quoted text clipped - 9 lines]
> > minutes in decimal (i.e. 6,83) in hh:mm (i.e. 6:50).
> > Thanks in advance for help.