Border Radius Generator

Set border-radius to 50% on a square element (equal width and height). The 50% value rounds each corner to half the element's dimensions, creating a perfect circle. For rectangular elements, 50% creates an ellipse/pill shape. Ensure the element is square (width = height) for a true circle.

Use elliptical radius for pill/oval shapes when you need oval rather than circular elements, or for nuanced asymmetric corner rounding with different horizontal and vertical curvature. Elliptical radius provides control over both horizontal and vertical rounding independently, enabling oval shapes and directional rounding effects.

No, modern browsers support standard border-radius without vendor prefixes. Border-radius has been widely supported since 2010+. Only very old browsers (IE8 and earlier) required prefixes, and those browsers are no longer relevant. Use standard border-radius property without prefixes for current web development.

Export SCSS variables or design tokens (e.g., $radius-sm: 4px, $radius-md: 8px, $radius-lg: 12px) and reuse these tokens across components. Create a token hierarchy that scales appropriately, document token usage, and apply tokens consistently. This ensures design system consistency and makes global radius changes easier.

Yes, use Tailwind suggestions provided by the tool, or create custom Tailwind utilities matching your border-radius values. Tailwind includes built-in rounded utilities (rounded-sm, rounded-md, rounded-lg), but you can extend Tailwind config with custom radius values that match your generated border-radius specifications.

Negligible—rounded corners render efficiently on modern GPUs and browsers. Border-radius has minimal performance impact compared to complex effects (shadows, filters). Modern browsers optimize border-radius rendering, so performance concerns are rarely an issue. Use border-radius liberally without significant performance worries.

Use percentage (%) for responsive rounding that scales with element size, rem or em for typography-scaling components, or viewport units (vw, vh) for viewport-relative designs. Pixels (px) work for fixed-size elements. Choose units matching your responsive strategy: % for element-relative, rem/em for typography-relative, vw/vh for viewport-relative scaling.

Create standardized radius tokens (sm, md, lg, xl), export as SCSS variables or design tokens, document token usage guidelines, and apply tokens consistently across components. Use the same token values for similar component types (all cards use $radius-md, all buttons use $radius-lg), ensuring visual consistency and making global changes easier.

Yes, border-radius can be animated and transitioned smoothly, allowing dynamic radius changes on hover, focus, or state changes. Use CSS transitions (transition: border-radius 0.3s ease) for smooth radius animations. Border-radius transitions work well for interactive effects, though large radius changes may be visually jarring—use subtle transitions.

Uniform applies the same radius to all four corners simultaneously (single value). Individual corner control allows different radius for each corner (top-left, top-right, bottom-right, bottom-left separately), enabling asymmetric designs like speech bubbles, directional elements, or specific corner treatments that require different rounding per corner.

Match radius proportionally: tiny components (icons, badges) use 2-4px, small components (buttons, inputs) use 4-8px, medium components (cards, panels) use 8-12px, large containers use 12-16px. Very large containers rarely need more than 16-24px. Use design system tokens to standardize proportional scaling across component sizes.

Yes, border-radius works seamlessly with other CSS properties including box-shadow, background gradients, border properties, and transforms. Rounded corners affect how these properties render, so border-radius complements other styling effects. Test combinations to ensure visual effects (shadows, gradients) appear correctly with rounded corners.