Keeping records for working hours with excel

[Lauri Kelo]

Hi

I've made working hour record keeping tool with excel. This is how it
looks. It works well,
but I would like to know how it would be possible to create easier.

DATE DAY HOURS1(E) HOURS2(G) SALDO1(H) SALDO2(I)
-----------------------------------------------------------------
21.3.2007 Ke 6:06 6,10 -36,90 -36:54


My sheet is used by typing in HOURS1 value, which is actual working
hours in
format HOURS:MINUTES.

HOURS2 is created by excel using formula:
=IF(E79="";"";HOUR(E79)+MINUTE(E79)/60)

SALDO1 using formula(7,5 is my normal working hours):
=IF(E79="";"";H76+G79-7,5)

SALDO2 using formula:
=IF(H79="";"";IF(H79<0;"-"&INT(ABS(H79))&":"&IF(LEN(INT((ABS(H79)-INT(ABS(H79)))*60))=1;"0"&INT((ABS(H79)-INT(ABS(H79)))*60);INT((ABS(H79)-INT(ABS(H79)))*60));INT(ABS(H79))&":"&IF(LEN(INT((ABS(H79)-INT(ABS(H79)))*60))=1;"0"&INT((ABS(H79)-INT(ABS(H79)))*60);INT((ABS(H79)-INT(ABS(H79)))*60))))

Is there easier way to convert time in decimal format back to time
format. Even if that time is
negative value.

Thanks in advance.

 

[Lori]

=IF(H79<0;"-";"")&TEXT(ABS(H79)/24;"[h]:mm;;;")

 

[Toppers]

To convert a time in hh:mm to decimal just multiply by 24 and fomat cell as
GENERAL.

A1=07:30
B1=A1*24 (=7.5)

HTH