Pixel Aspect Ratio Calculator
Calculate pixel aspect ratios and adjust images to desired aspect ratios for video and photography
Pixel Aspect Ratio Calculator
Width of the image/video in pixels
Height of the image/video in pixels
Common Aspect Ratios
16:9
1.778Widescreen
4:3
1.333Standard
16:10
1.600Widescreen
21:9
2.333Ultra-wide
1:1
1.000Square
3:2
1.500Photography
5:4
1.250Photography
Quick Reference
Square Pixels
Aspect ratio = 1:1 (most digital images)
Widescreen
16:9 = 1.778 (HD, Full HD, 4K)
Standard TV
4:3 = 1.333 (SDTV, older content)
Ultra-wide
21:9 = 2.333 (cinematic displays)
Tips & Applications
Use for video editing and export settings
Optimize images for different display formats
Calculate crop dimensions without distortion
Design responsive layouts for web and mobile
Match camera sensor formats in photography
Understanding Pixel Aspect Ratio
What is Pixel Aspect Ratio?
Pixel aspect ratio (PAR) is the proportional relationship between the width and height of a single pixel. It defines whether pixels are square (1:1) or rectangular. Most digital images use square pixels, but some video formats use non-square pixels for compatibility with older television standards.
Common Applications
- •Video editing and production
- •Photography and image processing
- •Web design and responsive layouts
- •Digital signage and display setup
Calculation Formula
Aspect Ratio = Pixel Width ÷ Pixel Height
Format Examples
Pro Tip: When cropping or resizing images, maintain the aspect ratio to prevent distortion