How can I keep the size of my subsubsection the same size as the paragraph font size?

Question

I would like to keep my subsubsection header the same size of the paragraph font, can someone help me?

at the moment the subsubsection font is the equivalent of \small whilst the paragraph font is \normal.

This is my preamble:

\documentclass[12pt]{report}
\usepackage{graphicx}
\usepackage{geometry}
\usepackage{fixltx2e}
\usepackage{grffile}
\usepackage[font=small,labelfont=bf]{caption}
\usepackage{floatrow}
\usepackage{amsmath}
\usepackage{longtable}
\usepackage{tocbibind}
\usepackage{fancyhdr}
\usepackage{titlesec}
\usepackage{epstopdf}
\usepackage{booktabs}
\usepackage{multirow}
\usepackage{tabularx}
\usepackage{tabu}
\usepackage{ragged2e}
\newcolumntype{L}{>{\RaggedRight\arraybackslash}X}

\titleformat{\section}
  {\normalfont\fontsize{14}{12}\bfseries}{\thesection}{1em}{}
\makeatletter
\renewcommand{\paragraph}{%
  \@startsection{paragraph}{4}%
  {\z@}{1.2ex \@plus 1ex \@minus .2ex}{-1em}%
  {\normalfont\normalsize\bfseries}%
}
\renewcommand{\baselinestretch}{1.0}
\makeatother
\setcounter{secnumdepth}{3}

and then I just use \subsubsection

Answer 1

I think using \normalfont or \textnormal inside the \subsubsection header can serve your purpose.

\subsubsection{\textnormal{I am same as the paragraph font}}
 I am the paragraph.

or,

\subsubsection{\normalfont I am same as the paragraph font}
 I am the paragraph.

Answer 2

The titlesec package with explicit option lets you have simple formatting commands; e.g.:

\titleformat*\subsubsection}[hang]{\large\bfseries\boldmath}{0.5em}{\thesubsubsection.}{#1}

where:

• the "optional" argument is the shape of the section; hang is LaTeX default.
• next argument is general formatting to be applied to both label and title text.
• 3rd argument is the distance between label and title.
• 4th argument is label formatting (here adding a dot at the end of the label.
• last argument is code that precedes the title (#1 if the explicit option was chosen).