YouTube Shorts Aspect Ratio & Video Specs
YouTube Shorts require a vertical aspect ratio of 9:16 (1080 × 1920 pixels) or 1:1 (square, 1080 × 1080 pixels) with a duration of up to 3 minutes (180 seconds). The 9:16 format offers the highest viewer retention on mobile apps.
YouTube Shorts Studio & Scaling Calculator
Pre-loaded with 1080 × 1920 (9:16portrait). Adjust width or height to calculate proportional dimensions.
Developer Outputs (CSS • HTML)Show CodeHide Code
aspect-ratio: 16 / 9;aspect-videowidth="1920" height="1080"The preview rectangle automatically scales proportionally to simulate true physical and screen viewport orientations, preventing distortion before you export.
Common 9:16 Resolutions & Formats
Exact pixel dimensions matching the 9:16 ratio across varying quality tiers.
| Standard / Tier | Dimensions (W × H) | Quality | Primary Use Case |
|---|---|---|---|
| Recommended 1080p | 1080 × 1920 px | 1080p | Optimal for mobile viewing and YouTube processing |
| 4K Vertical Master | 2160 × 3840 px | 2160p 4K | Supported on YouTube and unlocks VP9/AV1 codecs for premium sharpness |
Safe Zone & UI Margins
Desktop viewers will see Shorts letterboxed in a centered vertical window; mobile viewers experience full edge-to-edge playback.
Recommended Video & Audio Codecs
Export settings to minimize server-side recompression artifacts and preserve crisp details.
Why YouTube Shorts Supports 4K (Unlike TikTok)
Unlike Instagram and TikTok which downscale everything to 1080p, YouTube natively supports 4K vertical video (2160 × 3840 px) for Shorts. Uploading in 4K triggers YouTube's high-efficiency VP9 or AV1 compression tier, giving your video crisper text and cleaner details on high-end displays.
Frequently Asked Questions about 9:16
Can a YouTube Short be horizontal (16:9)?
No. YouTube will only categorize videos as Shorts if they are strictly vertical (9:16) or square (1:1), and under the maximum allowed duration limit.
Need to calculate or inspect other aspect ratios?
Visit our universal aspect ratio calculator hub for drag-and-drop media inspection, multi-line batch processing, reverse resolution matching, and instant CSS export.
Go to Main Aspect Ratio Calculator →