I would appreciate any help.

I have a merged field as a whole number for example, 60, 90, 45, 30.

I would like to convert that to hours and minutes, so the output would look something like this.

1 hr
1 hr 30 min
45 min
30 min

Notice that if its 0 hours or 0 min then I don't need to output anything.

Many thanks in advance

You could use a field construction like:
{=INT({MERGEFIELD Minutes}/60) \# "0' hr '"}{=MOD({MERGEFIELD Minutes},60) \# "0' min'"}
or
{=INT(«Minutes»/60) \# "0' hr '"}{=MOD(«Minutes»,60) \# "0' min'"}
where 'Minutes' is your datafield name.

NOTE: The field brace pairs (i.e. '{ }') for the above field code examples are created in the mailmerge main document itself, via Ctrl-F9 (Cmd-F9 on a Mac); you can't simply type them or copy & paste them from here. Nor is it practicable (for the most part) to add them via the standard Word dialogues. Likewise, the chevrons (i.e. '« »') - are part of the actual mergefields, inserted via the 'Insert Merge Field' dropdown (i.e. you can't type them or copy & paste them from here). The spaces shown in the field constructions are all required.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]

Thank you for your reply.

I have tried this but the output I get is something like that

0 hr 30 min

I am trying to remove the 0 hr or 0 min if there is any, so the end result will be just

30 min
or
2 hr
or
1 hr 15 min

Thanks,

I believe I solved my own question!

{IF {=INT(«Minutes»/60)} > 0 {=INT(«Minutes»/60) \# "0' hr '"}}
{IF {=MOD(«Minutes»,60)} > 0 {=MOD(«Minutes»,60) \# "0' min'"}}

Might not be best way, but it seems to work

Change the:
{=INT({MERGEFIELD Minutes}/60) \# "0' hr '"}
or
{=INT(«Minutes»/60) \# "0' hr '"}
to:
{=INT({MERGEFIELD Minutes}/60) \# "0' hr ';;"}
or
{=INT(«Minutes»/60) \# "0' hr ';;"}

Likewise, change the:
{=MOD({MERGEFIELD Minutes},60) \# "0' min'"}
or
{=MOD(«Minutes»,60) \# "0' min'"}
to:
{=MOD({MERGEFIELD Minutes},60) \# "0' min';;"}
or
{=MOD(«Minutes»,60) \# "0' min';;"}

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]

That worked perfect, thank you so much!