I am using below code to make the chapter titles uppercased,
\documentclass{book}\usepackage{titlesec}\begin{document}\titleformat{\chapter}[display] {\large \bfseries \centering}{\chaptertitlename\ \thechapter}{0pt}{\MakeUppercase}{\large}\titlespacing*{\chapter}{-10pt}{-20pt}{25pt}\chapter{Introduction}Hello\end{document}Output is like,
But I want to the word Chapter 1 as uppercased as well. Also, I want to reflect the uppercase format in the table of content too.
How can I do so?