Aspect Ratio Calculator

Calculate and simplify aspect ratios for any resolution while determining correct proportions for images, videos, and screen dimensions. This precision tool converts between different ratio formats and calculates missing dimensions from known ratios with support for common screen and print standards. Essential for video production, graphic design, responsive web design, print layout, and ensuring proper proportions across different media formats and display devices.
Ratio Simplification Missing Dimension Calc Common Presets Video & Print Support
Live Calculator
1337 × 42
56,154
Input: 1920x1080
Ratio: 16:9
Calculate: Width 1920 = Height ?
Presets: 16:9, 4:3, 1:1
📏 ×
Calculation Results

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Visual Preview
Preview Area
Ratio will appear here
No dimensions set
Tools & Presets
Find Missing Dimension
Common Ratios
Popular Use Cases

Practical Applications & Use Cases

Video Production & Editing

Calculate correct aspect ratios for different video formats and platforms

  • Set YouTube video dimensions (16:9)
  • Calculate Instagram story ratios (9:16)
  • Determine cinema format ratios
  • Convert between HD and 4K ratios
Pro Tip: Always maintain aspect ratio when scaling to prevent distortion

Responsive Web Design

Create proportional layouts that work across all devices

  • Calculate container ratios
  • Set responsive image dimensions
  • Design flexible card layouts
  • Plan mobile-first breakpoints
Pro Tip: Use CSS aspect-ratio property with calculated values for modern browsers

Print Layout & Design

Ensure proper proportions for print materials

  • Calculate poster dimensions
  • Set business card ratios
  • Design brochure layouts
  • Plan magazine spreads
Pro Tip: Consider bleed areas when calculating final print dimensions

Industry-Specific Applications

media:

Film production, streaming platforms, content creation

advertising:

Digital campaigns, billboard design, social media content

web development:

Responsive layouts, image optimization, UI components

photography:

Print sizing, gallery displays, portfolio layouts

architecture:

Building proportions, floor plans, elevation drawings

Help & Related Tools

Everything you need to know

FAQ Frequently Asked Questions

What is aspect ratio and why is it important?
Aspect ratio is the proportional relationship between width and height (like 16:9 or 4:3). It is crucial for video production, responsive design, print layouts, and ensuring content displays correctly across different devices and platforms.
Can I calculate dimensions for specific aspect ratios?
Yes, enter your desired aspect ratio and one dimension (width or height) to calculate the missing dimension. This is perfect for resizing content while maintaining proper proportions.
What are the most common aspect ratios?
Common ratios include 16:9 (widescreen, most modern displays), 4:3 (traditional TV/monitors), 1:1 (square, social media), 21:9 (ultrawide), and 3:2 (photography). Each serves specific use cases and platforms.
How do I use this for responsive web design?
Calculate aspect ratios for images and videos to ensure they scale properly across devices. Use the ratios to set CSS padding-bottom percentages for responsive containers that maintain proportions.
Can I simplify complex aspect ratios?
Yes, the calculator automatically simplifies ratios to their lowest common terms. For example, 1920:1080 simplifies to 16:9, making it easier to understand and communicate the proportional relationship.

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