BoundBox: Design Calculator

Precision is essential in UI/UX development. BoundBox provides a suite of professional tools to help designers and developers build balanced, proportional layouts for any screen size.

Streamline your workflow with these key utilities:
Aspect Ratio Calculator Quickly convert dimensions between different ratios. Ensure your visuals fit perfectly across HD, ultra-wide, and mobile screens. Calculate diagonal sizes and copy results instantly for use in your design software.
Box Model Visualizer Visualise how padding, borders, and margins affect the total size of an element. Perfect for understanding spacing systems and preventing layout overflow issues during the development phase.
Screen Divider Divide your canvas or screen area using percentage-based calculations. Ideal for creating grids, sidebars, and multi-column structures with mathematical accuracy.
Device Specifications Library Access a comprehensive list of smartphone, tablet, laptop, and wearable specifications. Search through a library of popular devices to get instant resolution, aspect ratio, and density data.

Key Highlights:
• Real-time calculations as you type.
• Simplified sharing and clipboard support for all results.
• Support for multiple unit systems.
• Intuitive interface designed for efficient professional use.

Improve your design accuracy and reduce layout errors. Whether you are building a mobile app or a complex web interface, BoundBox provides the exact measurements you need to create better products.