How to set a font for math mode? I would like to have something like Segoe UI of something similar. Thank you




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  • 1
    Welcome to TeX.SE! Where does this font comes from? Which type of font is it? Which tex engine do you use? Can you change the engine, if needed? – Mensch Aug 31 at 19:28
  • Segoe has no math symbols. You can try \usepackage{firamath-otf} – user187802 Aug 31 at 19:40
  • I use XeLaTex and I give an error that I added to my question – Marcia Cross Sep 1 at 2:32
  • @MarciaCross: It looks like that you have not an updated system. Try to update unicode-math and fontspec and latex3 – user187802 Sep 1 at 7:48

If you want Segoe UI specifically, you can select all the symbols it contains with the range= option of \setmathfont, with another font such as Fira Math as your fallback for the rest.


\defaultfontfeatures{Scale = MatchLowercase}
\setmainfont{Segoe UI}[
   Scale = 1.0,
   BoldFont = Segoe UI Semibold ,
   BoldItalicFont = Segoe UI Semibold Italic ]

\setmathfont{Fira Math}
\setmathfont{Segoe UI}[
  range= { up/{Latin,latin,Greek,greek,Digits},
\setmathfont{Segoe UI Semibold}[range=bfup/{Latin,latin,Greek,greek,Digits}]
\setmathfont{Segoe UI Italic}[range=it/{Latin,latin,Greek,greek}]
\setmathfont{Segoe UI Semibold Italic}[range=bfit/{Latin,latin,Greek,greek}]


Segoe UI \textit{italic} \textbf{bold \textit{italic}} 0

\( \lim_{n \to 0} \frac{\partial}{\partial t}
    \int_n^\infty  \pm \symup{i} \sqrt{\symup{\pi} t} \symbfit{b} \times
                                 \symbfup{j} \,\mathup{d}t
    \approx \increment \symbfit{B} \)


Segoe UI font sample

You can tweak this further if you like. For example, you’d want to add "02B0-"036F, or at least \hat, to the range of all the math alphabets if you wanted to use the combining accent.

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