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How can I change the font size of plot tick labels?

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Gene Polovy
Gene Polovy on 31 Jan 2015
Commented: Yijun Li on 26 Feb 2021 at 4:51
I am trying to change the font size of the tick labels (the numbers) in my plots. (Just to be clear, I am NOT referring to the axis labels.)


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Accepted Answer

Star Strider
Star Strider on 31 Jan 2015
Edited: MathWorks Support Team on 27 Nov 2018
You can change the font size of the tick labels by setting the FontSize property of the Axes object. The FontSize property affects the tick labels and any axis labels. If you want the axis labels to be a different size than the tick labels, then create the axis labels after setting the font size for the rest of the axes text.
For example, access the current Axes object using the gca function. Use dot notation to set the FontSize property for the Axes object. Then create an x-axis label with a different font size.
x = rand(1,100);
y = rand(1,100);
ax = gca;
ax.FontSize = 16;
xlabel('My Label','FontSize',10)


Gene Polovy
Gene Polovy on 31 Jan 2015
I tried this using R2014a first and it didn't work, but I happen to have 2014b on another computer (my department recently upgraded) and it worked there. Thank you! I hope MATLAB looks into this issue ...
Star Strider
Star Strider on 31 Jan 2015
My pleasure! I’m glad it worked. There are version differences, so hanging out on Answers means the Questions are always something of a moving target.
(The most sincere expression of appreciation here on MATLAB Answers is to Accept the Answer that most closely solves your problem.)
Image Analyst
Image Analyst on 31 Jan 2015
If what you say is true, then they have looked into it. It's fixed in the new version isn't it? You said it was.

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More Answers (1)

Marzena Krzek -BIO-
Marzena Krzek -BIO- on 17 Aug 2019
i have 2019b - it doesn't work for me either


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Hamid Motallebzadeh
Hamid Motallebzadeh on 2 Dec 2020
I'm using 2020b on Mac (Mojave). When I use gca.YAxis.FontSize = 40, it does not change the font size, but gca.YAxis returns
ans =
struct with fields:
FontSize: 40
It looks like it has the font size but does not apply it to the figure.
Yijun Li
Yijun Li on 26 Feb 2021 at 4:51
same problem. I am using 2019a Windows, gca.YAxis.FontSize = 40 does not change the tick font

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