Suppose I have a node in the shape of a circle. How can I make its border thicker?

\node[circle, draw=blue!80, inner sep=0pt, minimum size=12pt] (1) at (0,0) {1};

2 Answers 2


The node’s border is a path, you can use the same options for a \path, e.g. ultra thin, thick, very thick, and so on:

\node[circle, draw=blue!80, thick, inner sep=0pt, minimum size=12pt] (1) at (0,0) {1};

The line width key works as well:

\node[circle,draw=blue!80, line width=1mm, inner sep=0pt,minimum size=12pt] (1) at(0,0) {1};

All predefined line widths are

    ultra thin/.style= {line width=0.1pt},
    very thin/.style=  {line width=0.2pt},
    thin/.style=       {line width=0.4pt},% thin is the default
    semithick/.style=  {line width=0.6pt},
    thick/.style=      {line width=0.8pt},
    very thick/.style= {line width=1.2pt},
    ultra thick/.style={line width=1.6pt}


   every node/.append style={circle, draw=blue!80, inner sep=0pt, minimum size=12pt}]
\node                 (1) at (0,0) {1};
\node[thick]          (2) at (1,0) {2};
\node[line width=1mm] (3) at (2,0) {3};


enter image description here

  • 2
    If you have a rectangle as a node (e.g. using matrix in tikz), can you adjust the thickness of the borders individually? E.g. top, bottom, left, right? line width changes all of them simultaneously.
    – luchonacho
    Feb 19, 2018 at 10:14

You can change global path thickness as below, so you no need to change it here and there:


\tikzstyle{every node}=[font=\large]
\tikzstyle{every path}=[line width=2pt]

   every node/.append style={circle, draw=blue!80, inner sep=2pt, minimum size=12pt}]
\node                 (1) at (0,0) {1};
\node[]               (2) at (1,0) {2};
\node[]               (3) at (2,0) {3};

Output (use inkscape tool to covert pdf to png)

Output (use convert tool to covert pdf to png)

  • How did you get this figure? According your code, numbers should be centered inside circles.
    – Ignasi
    Nov 26, 2014 at 7:38
  • 1
    Really good question. I found it caused by different pdf to png convert tool. one is from inkscape and another is from convert. Not sure if it caused by the default font. I have updated the output from both tool. code is the same but image is really differ.
    – Beatlej
    Nov 26, 2014 at 19:16
  • 2
    @Beatlej Inkscape can't use embedded font... Nov 26, 2014 at 23:50

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.