Introduction to Border Radius Generator
Design rounded border corners in CSS with individual corner sliders and 1-click CSS code export.
Whether you are a student, a professional, or simply looking to understand the mechanics behind this computation, our comprehensive guide will walk you through the fundamental principles, the exact mathematical formula, and concrete examples of border radius generator in action.
Detailed Explanation
How it Works & Explanation
Create rounded corners for UI cards, buttons, and containers with linked or individual corner controls.
Healthy Tips & Guidelines
- A standard border-radius for modern, friendly UI buttons is between 6px and 8px.
- To create a perfectly circular profile picture, set the border-radius to 50% on a perfectly square image.
- When nesting rounded elements (like a button inside a card), the inner radius should be slightly smaller than the outer radius so the curves look parallel.
Common Mistakes to Avoid
- **Mixing rounded and sharp corners randomly:** Inconsistent use of border-radius breaks the visual flow of a design system. Decide on a strict corner style and stick to it.
- **Making pill-shaped buttons too tall:** A fully rounded button (pill shape) looks best when its width is significantly greater than its height. If it's too short, it looks like an oval.
- **Using percentages for subtle corners:** Using `border-radius: 5%` will create an elliptical curve if the element is a rectangle. Always use pixels (e.g., `8px`) for consistent, circular corners.
Math Formula
Tips & Best Practices
- A standard border-radius for modern, friendly UI buttons is between 6px and 8px.
- To create a perfectly circular profile picture, set the border-radius to 50% on a perfectly square image.
- When nesting rounded elements (like a button inside a card), the inner radius should be slightly smaller than the outer radius so the curves look parallel.
Common Mistakes to Avoid
- Mixing rounded and sharp corners randomly: Inconsistent use of border-radius breaks the visual flow of a design system. Decide on a strict corner style and stick to it.
- Making pill-shaped buttons too tall: A fully rounded button (pill shape) looks best when its width is significantly greater than its height. If it's too short, it looks like an oval.
- Using percentages for subtle corners: Using `border-radius: 5%` will create an elliptical curve if the element is a rectangle. Always use pixels (e.g., `8px`) for consistent, circular corners.
Step-by-Step Examples
Worked Examples
Standard Baseline Calculation
This is a baseline example showing how the Border Radius Generator takes standard parameters and processes them through our local algorithm. You can execute this exact scenario in the interactive calculator.
Given Parameters
Configure Border RadiusStandard value
Expected Result
StatusCalculated instantly