Free Tool
Responsive Breakpoints Calculator
Calculate and visualize responsive design breakpoints. Generate CSS media queries for mobile, tablet, and desktop layouts.
Choose Breakpoint System
Current Breakpoints
Generated CSS Media Queries
Common Breakpoint Systems
| Framework | Mobile | Tablet | Desktop | Large Desktop |
|---|---|---|---|---|
| Bootstrap 5 | < 576px | 576px - 991px | 992px - 1199px | ≥ 1200px |
| Tailwind CSS | < 640px | 640px - 1023px | 1024px - 1279px | ≥ 1280px |
| Material Design | < 600px | 600px - 1239px | 1240px - 1439px | ≥ 1440px |
| Foundation | < 640px | 640px - 1023px | 1024px - 1199px | ≥ 1200px |
Understanding Responsive Breakpoints
Breakpoints are screen widths where your website layout changes to adapt to different device sizes. Common breakpoints target:
- Mobile: 320px - 600px (phones)
- Tablet: 600px - 1024px (tablets, small laptops)
- Desktop: 1024px - 1440px (laptops, desktops)
- Large Desktop: 1440px+ (large monitors)
Mobile-First vs Desktop-First
Mobile-first (recommended):
- Default styles for mobile
- Use
@media (min-width: ...)to add styles for larger screens - Better performance — mobile users don't download desktop CSS
- Forces you to prioritize content
Desktop-first:
- Default styles for desktop
- Use
@media (max-width: ...)to override for smaller screens - Legacy approach — harder to maintain
Best Practices
- Start mobile-first — design for smallest screen, then scale up
- Use min-width queries — easier to maintain than max-width
- Test on real devices — not just browser resizing
- Use em/rem units in media queries to respect user zoom settings
- Don't target specific devices — design for screen sizes, not iPhones
- Focus on content breakpoints — add breakpoints where layout breaks, not at arbitrary sizes