How to change font type and size in Tkinter?

Tkinter actually has a variety of ways in which we may change the font type and size. Tkinter has several built in fonts, which can complicate things, especially when you realize that Each widget only uses one of these fonts. However, this also gives us the option to individually change the font type and size for different types of widgets.

We’ll start off with a general way of changing the font size and type that effects everything in the tkinter window.

Technique 1

The following code will only change the Font.

import tkinter as tk

root = tk.Tk()
root.option_add('*Font', '19')
root.geometry("200x150")

label = tk.Label(root, text = "Hello World")
label.pack(padx = 5, pady = 5)

root.mainloop()