You would need VBA.

With ActiveCell
.Value = Range("A1").Value & Range("C1").Value
.Characters(Len(Range("A1").Value) + 1, _
Len(Range("C1").Value)).Font.Bold = True
End With


--
HTH

Bob Phillips

(replace somewhere in email address with gmail if mailing direct)

"Hi_no_Tori" wrote in message
...
Suppose I have two Texts: "Text1" in A1 and "Text2" in C1. I want to make
a
concatenation of A1 and C1 in cell C3, and make the font of "Text1" bold,
but
not "Text2". Is there a way to do this in Excel?