Compare popular image and video shapes, find matching pixel dimensions and choose the right ratio for each screen or platform.
An aspect ratio is the proportional relationship between width and height, written as width : height. It describes the shape of a frame, not how many pixels it contains. For example, 1280 × 720 and 3840 × 2160 have different resolutions but share the same 16:9 shape.
Use this directory to compare established ratios and their practical uses. If you only need to reduce a specific width and height to a ratio, use the aspect ratio calculator instead.
Each guide explains one shape, lists pixel sizes and includes a fixed-ratio calculator. Use the general calculator for an arbitrary ratio; use the guides to understand a particular format.
1920×1080, 1280×720 and 3840×2160. The standard widescreen shape for video and displays.
Explore 16:9 → PORTRAIT · 0.56251080×1920, 720×1280 and 2160×3840. Full-screen vertical video for phones.
Explore 9:16 → SQUARE · 1.00001080×1080, 1200×1200 and 2048×2048. A balanced square format for images and posts.
Explore 1:1 → PORTRAIT · 0.7500600×800, 768×1024 and 1080×1440. A portrait photo and artwork format with a built-in calculator.
Explore 3:4 → PORTRAIT · 0.80001080×1350, 1200×1500 and 1600×2000. A tall feed-friendly image format.
Explore 4:5 → LANDSCAPE · 1.33331600×1200, 1024×768 and 800×600. A classic photo, presentation and display ratio.
Explore 4:3 → ULTRAWIDE · 2.33332560×1080, 3440×1440 and 5120×2160. An ultrawide format for monitors and cinematic layouts.
Explore 21:9 → PORTRAIT · 0.66671200 × 1800 and 2000 × 3000. A tall camera-photo and print format.
Explore 2:3 → LANDSCAPE · 1.50001800 × 1200 and 6000 × 4000. A classic camera and 4 × 6 print shape.
Explore 3:2 → LANDSCAPE · 1.25001280 × 1024 and 2500 × 2000. A near-square display and photo format.
Explore 5:4 → LANDSCAPE · 1.60001920 × 1200 and 2560 × 1600. A productivity display ratio with extra height.
Explore 16:10 → SUPER ULTRAWIDE · 3.55563840 × 1080 and 5120 × 1440. Two 16:9 workspaces side by side.
Explore 32:9 → PANORAMIC · 2.00001920 × 960 and 2160 × 1080. A clean panoramic image and video shape.
Explore 2:1 → PORTRAIT · 0.71431500 × 2100 at 300 PPI for a 5 × 7 inch print.
Explore 5:7 → FLAT CINEMA · 1.85001998 × 1080 and 3996 × 2160. The familiar flat theatrical format.
Explore 1.85:1 → SCOPE CINEMA · 2.3900A nominal scope ratio with common DCI rasters such as 2048 × 858.
Explore 2.39:1 → EXTREME PANORAMA · 4.00001600 × 400 and 2400 × 600. Built for banners and specialized panoramas.
Explore 4:1 →1:1 is square. Taller options include 4:5, 3:4 and the full-height 9:16. Choose among them from the destination's frame and how much vertical composition you need.
An aspect ratio describes shape: the relationship between width and height. Resolution describes the actual pixel count. For example, 1280×720, 1920×1080 and 3840×2160 are different resolutions that all share the 16:9 ratio.
aspect ratio = width ÷ heightHigher resolution does not change the ratio when width and height scale by the same factor. For a specific pixel size, use the resolution guide directory to check its exact reduced ratio, megapixels, print dimensions and crop options.
For a custom size, enter its width and height in the aspect ratio calculator.
Once the destination ratio is known, use the aspect ratio converter to calculate proportional dimensions. If the source and destination shapes differ, the crop loss calculator shows what a fill crop removes, while the letterbox and pillarbox calculator measures the padding needed to preserve the complete frame.
These workflows solve different problems: scaling preserves shape, cropping fills the destination, and padding preserves all source content.