How do I set the width of an Tkinter Entry widget in pixels?

You can also use the Place geometry manager:

entry.place(x=10, y=10, width=100) #width in pixels

You cannot specify the width in pixels using the '-width' option, but there are ways to accomplish the same thing. For example, you could pack an entry in a frame that has no border, turn off geometry propagation on the frame, then set the width of the frame in pixels.

You can use "ipadx" and "ipady" while packing the "Entry" widget.

You can also use it with "grid".

import tkinter as tk

root = tk.Tk

e = tk.Entry()
e.pack(ipadx=100, ipady=15)

tk.mainloop()