Common Video and Photo Aspect Ratios by Platform
Bikash Roy
Online Research Specialist · SEO Strategist · Web Developer
Bikash personally verifies every calculator against official standards (WHO, NIH, government data). Online research specialist, SEO strategist, and web developer with 10+ years building accurate digital tools.
Full bio →Why Platform Specs Matter
Uploading the wrong aspect ratio to a platform usually doesn’t fail outright — it gets auto-cropped, letterboxed, or squeezed into the platform’s preferred shape, often in a way you didn’t intend. Knowing each platform’s recommended ratio in advance, and using the aspect ratio calculator to hit it exactly, avoids that outcome.
YouTube
Standard (horizontal) video: 16:9, with 1920×1080 as the recommended upload resolution per YouTube’s own encoding guidance. This is the aspect ratio YouTube’s player is built around — uploading anything else gets letterboxed or pillarboxed to fit.
YouTube Shorts (vertical): 9:16, matching a full-screen mobile display.
Feed posts (square): 1:1, historically Instagram’s signature format, still widely used and well-supported.
Feed posts (portrait): 4:5 — currently favored for feed photos and videos since it takes up more vertical screen space than 1:1 without triggering aggressive cropping.
Stories and Reels: 9:16, filling the full mobile screen vertically.
Meta’s own business help documentation confirms both 1:1 and 4:5 are supported for images and video, with 9:16 specifically recommended for full-screen vertical placements like Stories and Reels.
TikTok
Standard video: 9:16, the platform’s native full-screen vertical format — content shot or exported in any other ratio typically gets pillarboxed with black bars on either side.
X (formerly Twitter)
In-feed video: 16:9 is standard for landscape video; 9:16 is commonly recommended for the vertical video-focused placements, mirroring the broader industry shift toward vertical-first video consumption.
Feed posts: 1:1 or 4:5 both display well without cropping; 16:9 also works for landscape video content shared professionally.
Print and Presentation Formats
Standard photo prints: 3:2 (matching most DSLR and mirrorless camera sensors) or 4:3.
Presentation slides: 16:9 is now the standard widescreen format for PowerPoint, Google Slides, and Keynote, having replaced the older 4:3 standard slide shape.
Quick Reference Table
| Platform / Use | Recommended Ratio | Notes |
|---|---|---|
| YouTube (standard) | 16:9 | 1920×1080 recommended |
| YouTube Shorts | 9:16 | Full-screen vertical |
| Instagram Feed | 1:1 or 4:5 | 4:5 currently favored |
| Instagram Stories/Reels | 9:16 | Full-screen vertical |
| TikTok | 9:16 | Native format |
| Presentation slides | 16:9 | Current widescreen standard |
| DSLR photo prints | 3:2 | Matches most camera sensors |
Using This Table With the Calculator
Once you know your target platform’s ratio, use the aspect ratio calculator’s “Ratio → Dimension” mode with a one-click preset (16:9, 4:3, 9:16, 21:9, 1:1) to solve for the exact pixel dimensions you need, or use “Resize Proportionally” if you’re starting from existing footage or a photo and need to scale it without distortion — see how to resize proportionally without distortion for that process in detail.