The Ultimate Flutter Layout Generator
Building responsive, scalable UI layouts is the foundation of modern front-end engineering. While the CSS Flexbox model has become the absolute industry standard for aligning and distributing space among items in a container on the web, native mobile SDKs implement these exact same concepts using entirely different syntax, paradigms, and naming conventions.
This generator serves as a universal translator for UI developers. It allows you to build your layout visually—manipulating direction, alignment, justification, and spacing—and automatically translates your configuration into exact, production-ready Flutter code. Whether you are centering a button, building a complex navigation bar, or laying out a dynamic grid of cards, this tool guarantees mathematically perfect UI alignment.
Layout in Flutter
Flutter does not use the term "Flexbox" directly for most of its layouts, instead opting for the heavily-used Row and Column widgets (which actually inherit from a generic Flex widget under the hood). Instead of the web's justify-content and align-items, Flutter maps these precise concepts to mainAxisAlignment and crossAxisAlignment. A critical difference is that Flutter Rows and Columns do not natively support a direct gap property; spacing is traditionally achieved by inserting SizedBox widgets between children, or by utilizing a Wrap widget if multi-line wrapping is required.
Frequently Asked Questions
What is the main axis versus the cross axis?
In flex-based layouts, the main axis is defined by the flex direction (e.g., horizontal for a Row, vertical for a Column). The cross axis runs perpendicular to it. Properties like justify-content affect the main axis, while align-items controls the cross axis.
How do I center an item perfectly?
To center a child both horizontally and vertically, you must align it on both axes. In standard CSS or Tailwind, this means setting both justify-content to center and align-items to center on the parent container.
Does this tool generate responsive code?
This tool generates the base layout structure. For true responsiveness (like changing from a row on desktop to a column on mobile), you will need to add platform-specific media queries or responsive breakpoints (e.g., Tailwind's md:flex-row classes).