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Responsive Breakpoint Calculator

Calculate responsive design breakpoints for mobile, tablet, and desktop. Generate media query code for all screen sizes.

Use Responsive Breakpoint Calculator to get instant results without uploads or sign-ups. Everything runs securely in your browser for fast, reliable output.

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About this tool

Responsive breakpoints define where your design adapts to different screen sizes. Our Breakpoint Calculator provides industry-standard breakpoints and media query code.

Mobile-first approach starts with mobile styles, then adds breakpoints for larger screens. Use min-width media queries for scalable, maintainable responsive design.

Usage examples

Bootstrap Breakpoints

Industry standard breakpoints

xs: <576px, sm: ≥576px, md: ≥768px, lg: ≥992px, xl: ≥1200px

Mobile-First Media Query

Tablet and up styles

@media (min-width: 768px) { /* tablet and desktop styles */ }

How to use

  1. View standard responsive breakpoints.
  2. Select "Breakpoint System" (Bootstrap, Tailwind, custom).
  3. Click "Generate" to get media query code.
  4. Use breakpoints for mobile-first responsive design.

Benefits

  • Standard breakpoints
  • Media query code
  • Mobile-first approach
  • Multiple frameworks
  • All device sizes
  • Copy-paste ready

FAQs

What are responsive breakpoints?

Breakpoints are screen widths where layout changes to accommodate different devices. Common: 320px (mobile), 768px (tablet), 1024px (laptop), 1440px (desktop). Use media queries to apply styles at different breakpoints. Mobile-first: start small, add @media (min-width: 768px) for larger screens.

What is mobile-first design?

Mobile-first: write styles for mobile (smallest screen) first, then use min-width media queries to enhance for larger screens. Benefits: faster mobile load, progressive enhancement, forces content prioritization. Opposite: desktop-first uses max-width queries. Mobile-first is modern standard.

What are standard Bootstrap breakpoints?

Bootstrap 5 breakpoints: xs (<576px), sm (≥576px), md (≥768px), lg (≥992px), xl (≥1200px), xxl (≥1400px). Used in classes: .col-md-6 (6 columns on medium screens and up). Industry standard, battle-tested on millions of sites.

What breakpoints should I use?

Start with: 640px (large mobile), 768px (tablet), 1024px (laptop), 1280px (desktop). Or use Bootstrap/Tailwind breakpoints. Test on real devices. Don't add breakpoints just for specific devices (iPhone 12, Galaxy S21) - use ranges. Fewer breakpoints = simpler code.

How do I write media queries?

Mobile-first: @media (min-width: 768px) { /* styles for 768px and wider */ } Desktop-first: @media (max-width: 767px) { /* styles for 767px and narrower */ } Can combine: @media (min-width: 768px) and (max-width: 1023px) { /* tablet only */ }

Should I use pixels or ems for breakpoints?

Debate exists. Pixels (px): simpler, matches device specs. Ems: respects user font-size settings, accessibility benefit. Most use pixels. If using ems: 1em = 16px, so 768px = 48em. rem also works. Pick one system and stay consistent.

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