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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Different pixel-specified font sizes in tkinter","articleBody":"# Bug report\n\n### Bug description:\n\n```python\nimport tkinter as tk\nimport tkinter.font as tkfont\n\nroot = tk.Tk()\n\nfont_tuple = (\"Calibri\", -14)\nfont = tkfont.Font(root, font_tuple)\n\nlb1 = tk.Label(root, text=\"Hello\", font=font_tuple)\nlb1.pack()\nlb2 = tk.Label(root, text=\"Hello\", font=font)\nlb2.pack()\n\nroot.update()\nprint(lb1.winfo_width(), lb1.winfo_height())\nprint(lb2.winfo_width(), lb2.winfo_height())\n\nroot.mainloop()\n```\nThe font size differs between tuples and Font objects.\nThe documentation states it can be specified in pixels, but is this a bug?\n\n\n### CPython versions tested on:\n\n3.14\n\n### Operating systems tested on:\n\nWindows\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-143992\n* gh-152025\n* gh-153267\n* gh-153322\n* gh-153323\n* gh-153341\n* gh-153342\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/Kawasaki5963","@type":"Person","name":"Kawasaki5963"},"datePublished":"2026-01-18T08:23:56.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/143990/cpython/issues/143990"}