Device & Screen

Find the correct aspect ratio for my screen resolution

Finding your screen's aspect ratio is helpful for understanding your monitor, phone, or device. Here's how to find it and what the numbers mean.

Quick Method: Use the Calculator

Enter your screen's resolution (width × height) and get instant results:

  1. Find your resolution (see methods below)
  2. Enter into our calculator
  3. Get your aspect ratio immediately

How to Find Your Screen Resolution:

Windows Computer:

  1. Right-click on desktop → Display Settings
  2. Scroll down to "Display resolution"
  3. Shows resolution like 1920 × 1080

Mac:

  1. Click Apple menu → System Preferences
  2. Select "Displays"
  3. Shows "Resolution" with pixel dimensions

iPhone:

  1. Settings → General → About
  2. Look for "Model" name (tells you screen size)
  3. Google "[Model] screen resolution" for specs

Android Phone:

  1. Settings → About Phone → Device Name
  2. Search online for "[Phone Model] screen resolution"
  3. Or: Settings → Display → check resolution option

Monitor/TV:

  1. Right-click desktop → Display Settings (Windows)
  2. Check manual or manufacturer specs
  3. Resolution usually labeled (1080p, 4K, etc.)

Common Screen Resolutions & Ratios:

Monitors & Computers:

ResolutionRatioType
1920 × 108016:9Full HD
1280 × 10245:4Standard
1680 × 105016:10Widescreen
2560 × 144016:92K
3840 × 216016:94K
3440 × 144021:9Ultrawide
5120 × 144032:9Super Ultrawide

Phones:

Device TypeCommon RatioExamples
iPhone19.5:9, 20:9Newer models
Standard Android19.5:9, 20:9Most modern phones
Older Phones16:95+ year old models

Tablets:

DeviceRatioResolution
iPad4:32048 × 1536
iPad Pro4:32732 × 2048
Android Tablets16:10Varies

Televisions:

StandardRatioCommon Resolutions
HD16:91280 × 720
Full HD16:91920 × 1080
4K/Ultra HD16:93840 × 2160

What Different Ratios Mean:

16:9 (Most Common)

  • Standard widescreen
  • Used by most computers, TVs, phones
  • Wide rectangular shape
  • Great for videos and gaming

4:3 (Older Standard)

  • Used by older monitors and TVs
  • More square-like shape
  • Less common today
  • Often seen on older devices

16:10 (Monitor Standard)

  • Slightly wider than 4:3
  • More square than 16:9
  • Popular for computer monitors
  • Good for productivity work

21:9 (Ultrawide)

  • Very wide rectangular
  • Gaming and content creation
  • Immersive experience
  • Not standard for most users

Why Knowing Your Ratio Matters:

For Gaming:

  • Games perform differently on different ratios
  • Some games adjust automatically
  • Ultrawide monitors give competitive advantage

For Work:

  • Affects window management
  • Influences taskbar position
  • Changes how content displays

For Content:

  • Determines how movies display
  • Affects video playback
  • Influences website layout

For Streaming:

  • Important for streaming setup
  • Affects viewer experience
  • May require scaling adjustments

Pro Tips:

Tip 1: Resolution vs Ratio

  • Resolution = exact pixels (1920×1080)
  • Ratio = proportion (16:9)
  • Same ratio, different resolutions possible

Tip 2: Changing Resolution

  • You can change resolution in settings
  • Ratio stays proportional
  • Higher resolution = sharper image

Tip 3: Multiple Monitors

  • Each monitor has its own ratio
  • Can mix different ratios
  • Windows handles scaling

Tip 4: For Gaming

  • Gaming-focused monitors often 16:9
  • Some competitive players prefer 4:3
  • Ultrawide (21:9) becoming more popular

Understanding Pixel Density:

Same resolution on different screen sizes = different look:

  • 1920×1080 on 24" monitor = sharper than on 30" monitor
  • This is called PPI (pixels per inch)
  • But the ratio is still 16:9

Decision Help:

If you want to know your screen ratio:

  1. Find your resolution (steps above)
  2. Use our calculator
  3. You'll instantly know your aspect ratio

If you want to change your resolution:

  • Go to Display Settings
  • Choose from available options
  • Your ratio might change
  • Click Apply to see live preview

Bottom Line:

Your screen's aspect ratio is simply the proportion of its width to height. Find your resolution, enter it in our calculator, and you'll instantly know your ratio. Most modern screens are 16:9, but checking yours takes just minutes!

Ready to Calculate Aspect Ratios?

Use our free aspect ratio calculator to find the perfect dimensions for your project.

Try the Calculator