Using tr to delete carriage returns

I wanted to change a files contents from being carriage return delimited to being space delimited, So of course I tried to pipe it through sed, but couldn't get it to do what I needed for whatever reason.

Found the "tr" command for "translate characters".

Can use -d option to delete chracters

tr -d "\n" < file.txt > file-sans-cr.txt

or give two strings to translate between

tr "\n" " " < file.txt > space-delimited-file.txt