Aspect Ratio Calculator
Calculate, convert, and visualize aspect ratios for images, videos, and screens
📐 Width/Height ratio
🖼️ Resolution calculator
🎬 Video formats
📱 Screen sizes
Ratio Calculator
📏 Enter Dimensions
px
:
px
16:9 · 1.78:1
Widescreen HD / Full HD / 4K Standard
🔄 Or Enter Custom Ratio
Resolution Calculator
Width (pixels)
with ratio 16:9
Height
1080
px
Height (pixels)
Width
1920
px
Total Pixels:
2,073,600
Megapixels:
2.1 MP
Common Resolutions
1920×1080
Full HD · 16:9
3840×2160
4K UHD · 16:9
1280×720
HD · 16:9
2560×1440
2K QHD · 16:9
1080×1920
Portrait HD · 9:16
1024×768
XGA · 4:3
3440×1440
Ultrawide · 21:9
1080×1080
Square · 1:1
1366×768
HD Laptop · 16:9
1536×864
2K · 16:9
2048×1080
2K DCP · 17:9
4096×2160
4K DCP · 19:10
Visual Representation
16:9
1920 × 1080 · 16:9
Video Standard
Full HD
Film Format
Widescreen
Screen Type
Landscape
Decimal Ratio
1.78:1
Frequently Asked Questions
📐 What is an aspect ratio?
Aspect ratio is the proportional relationship between width and height. Written as width:height (e.g., 16:9). It describes the shape of an image or screen.
🎬 Why is 16:9 so common?
16:9 (1.78:1) is the international standard for HDTV and most modern displays. It's a compromise between traditional 4:3 and wider cinema formats.
📱 What ratio for social media?
Instagram: 1:1 (square), 4:5 (portrait), 16:9 (landscape) • YouTube: 16:9 • TikTok/Reels: 9:16 (vertical).
🎥 What is 2.35:1?
2.35:1 (also 21:9) is CinemaScope/Cinemascope widescreen format used for many movies. Much wider than standard HDTV.