TikTok video size: 1080×1920 at 9:16 checked free
The right TikTok video size is 1080×1920 pixels, a vertical 9:16 ratio, which fills a phone screen; TikTok accepts vertical video from 540×960 for ads and 720p and up for uploads. The videosi TikTok Video Size Checker reads a video's width, height, length and file size in your browser and checks them against TikTok, Instagram Reels and YouTube Shorts, free.
Only the video's size, length and file size are read, in your browser. Nothing is uploaded.
- Free, no sign-up
- TikTok, Reels and Shorts specs
- Nothing is uploaded
TikTok, Reels and Shorts video size and length
| Platform | Size and ratio | Length | Notes |
|---|---|---|---|
| TikTok | 1080×1920, 9:16 (ads: 540×960 or more) | Ads up to 10 minutes; posting through TikTok's API: 3 minutes for all creators, 5 or 10 for some | MP4, MOV and WebM are accepted; 23 to 60 FPS |
| Instagram Reels | 1080×1920 recommended, 9:16 (ratios from 1.91:1 to 9:16 post) | Up to 20 minutes; over 3 minutes is not recommended to new audiences | Ads guide: 1440×2560, up to 15 minutes, 4 GB |
| YouTube Shorts | 1080×1920, 9:16 or square | Up to 3 minutes (since October 15, 2024) | Longer square or vertical videos are regular videos, not Shorts |
TikTok's in-app upload limits change by account and device and are not published on one page; the checker uses 10 minutes, the ad limit.
How to use the TikTok Video Size Checker
Open the video
Pick an MP4, MOV or WEBM. Only its size, length and file size are read.
Read the checks
Each platform gets a line for shape, resolution, length and file size, marked fine, worth a look, or a problem.
Fix what fails
Reframe a horizontal video to 9:16, export at 1080×1920, or trim it under the platform's length limit.
What is the videosi TikTok Video Size Checker?
TikTok, Instagram Reels and YouTube Shorts are all built for vertical 9:16 video at 1080×1920. A horizontal or square video still posts, but it shows with bars or gets cropped, and a low-resolution file looks soft on a phone.
Length is where the platforms differ most: Shorts are up to 3 minutes, Reels up to 20 minutes with only those up to 3 minutes recommended to new audiences, and TikTok allows longer uploads than it once did. To star in the clip yourself, videosi's AI body swap on the home page keeps the original moves and camera and puts you in the lead, from one photo.
Worked example: a 16:9 clip from a camera
Say a 1920×1080 clip of 2 minutes 10 seconds is checked. It fails the shape check on all three platforms, because a horizontal frame shows with bars or a crop on a phone. Its resolution is fine, and its length passes TikTok, Reels and Shorts, since all three allow over 2 minutes.
Reframing it to 1080×1920 in an editor fixes the shape. If the same clip ran 3 minutes 20 seconds, it would still pass TikTok and Reels but fail Shorts, which counts only videos up to 3 minutes as Shorts.
What the TikTok Video Size Checker can and cannot tell you
- It reads the size, length and file size the browser reports. It does not check the codec, bitrate or frame rate, which some apps also limit.
- Upload limits differ by account, region and app version, and TikTok does not publish all of them in one place.
- A browser that cannot play a file (some HEVC MOV files on some computers) cannot check it; convert it to MP4 first.
Sources, checked November 3, 2026
- TikTok Ads Manager: TikTok Auction In-Feed Ads (video specs)
- TikTok for Developers: Content Posting API media transfer guide
- Instagram: Reels features
- Meta Ads Guide: Instagram Reels video ads
- YouTube Help: Understand three-minute YouTube Shorts
Platforms change their apps and limits without notice; open the official page before a decision that depends on an exact number.
More free tools
Guides: How to body swap in a video with AI, step by step · Best AI body swap tools in 2026, compared · Can you swap bodies? What science and AI can do · AI cameo video: is Cameo AI, and how to make your own
Star in the video instead
AI body swap on videosi keeps the original moves, camera and setting and puts you in the lead, from one photo. The breakdown is free; you see the price before you pay.
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What size is a TikTok video?
A TikTok video should be 1080×1920 pixels, a vertical 9:16 ratio, which fills the phone screen. TikTok accepts vertical ads from 540×960 and recommends 720p or higher for uploads. Check any file free at videosi.io/tools/tiktok-video-size.
What is the TikTok aspect ratio?
TikTok's recommended aspect ratio is 9:16, vertical. TikTok also accepts square and horizontal video, but they show with bars or get cropped on a phone, so 9:16 at 1080×1920 is the safe choice.
How long can a TikTok video be?
TikTok ads can run up to 10 minutes. Through TikTok's posting API, all creators can post 3-minute videos and some can post 5 or 10 minutes; uploads in the app and on the web can allow more depending on the account.
Is the Instagram Reels size the same as TikTok?
Yes for size: Reels are 1080×1920 at 9:16 too. Length differs: Instagram lets Reels run up to 20 minutes but recommends only those up to 3 minutes to people who do not follow you.
How long can a YouTube Short be?
Since October 15, 2024, a square or vertical video up to 3 minutes long counts as a YouTube Short. A longer one uploads as a regular video.
Is my video uploaded to check its size?
No. The videosi TikTok Video Size Checker reads the size, length and file size in your browser and sends nothing to videosi or anyone else.