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Editorial Team
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Asked: 2026-05-26T08:52:46+00:00

Where can I get system size of UI elements in iOS? For example, UIButton

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Where can I get system size of UI elements in iOS?

For example,

  • UIButton corner radius,
  • UIWindow size (I know it’s 320pt, but is there a constant for it?),
  • System font size,
  • Navigation bar height,
  • Tab bar height,
  • Status bar height, etc.

Do they have predefined constants or similar?

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1 Answer

  1. Editorial Team

    UIButton corner radius

    I don’t think there’s an API for that.

    UIWindow size (I know it’s 320pt, but is there a constant for it?)

    You could get this via [[UIScreen mainScreen] bounds].

    System font size

    UIFont has class methods for getting standard font sizes: labelFontSize, buttonFontSize, smallSystemFontSize and systemFontSize are available.

    Navigation bar height,
    Tab bar height,

    The UIView instance method sizeThatFits: could be used to get the default sizes for those.

    Status bar height

    You can get this implicitly by subtracting the height of [[UIScreen mainScreen] bounds] from [[UIScreen mainScreen] applicationFrame].

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