Aspect Ratio Calculator

Calculate and scale dimensions while maintaining aspect ratio. Perfect for resizing images, videos, and responsive designs.

16:9
Current Aspect Ratio
×

Scale to New Size (Lock Ratio)

2,073,600Total Pixels
2.07 MPMegapixels
1.778Decimal Ratio

Features

  • Calculate aspect ratio from any dimensions
  • Preset common ratios for video, photo, and design
  • Scale dimensions while maintaining ratio
  • Visual preview of proportions
  • Copy ratio or dimensions to clipboard

Common Aspect Ratios

  • 16:9 - Standard HD/4K video, most monitors
  • 4:3 - Classic TV, iPad, many projectors
  • 1:1 - Instagram posts, album covers
  • 9:16 - Instagram/TikTok stories, mobile video
  • 21:9 - Ultrawide monitors, cinematic
  • 3:2 - DSLR photos, 35mm film

Keyboard Shortcuts

  • Ctrl + L - Focus width field
  • Tab - Move between fields
  • Ctrl + Shift + C - Copy ratio
  • Space - Swap dimensions
  • Escape - Reset all