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TikTok aspect ratio and size: what TikTok states and what to export

By the KeyMo team · Updated

As of 11 October 2026, TikTok states 9:16 as the recommended ratio for ads and accepts vertical or landscape uploads in TikTok Studio. For TikTok Studio desktop uploads it states 720p or higher and up to 10 GB. It names no required size for regular posts, so we recommend 1080x1920.

TikTok aspect ratio and size numbers, as of 11 October 2026

Everything in this table was read on TikTok's own pages. The ad rows are advertising specs. They are the clearest numbers TikTok publishes, but they are not the rules for a regular post.

ItemWhat TikTok statesApplies to
OrientationVertical or landscape uploads are both acceptedTikTok Studio uploads
Resolution720p or higher; 1080p or higher is advised as a quality tipUploads up to 60 minutes; Creator Rewards tips
File sizeUp to 10 GBTikTok Studio desktop uploads
Vertical ratio9:16, recommended, at 540x960 px or largerIn-feed ads
Horizontal ratio16:9 at 960x540 px or largerIn-feed ads
Square ratio1:1 at 640x640 px or largerIn-feed ads
Ad file size500 MB or lessNon-Spark in-feed ads
Ad file formats.mp4, .mov, .mpeg, .3gp (the auction page adds .avi)Non-Spark in-feed ads
Ad bitrate516 kbps or more on one page, 2,500 kbps or more on anotherNon-Spark in-feed ads
Best practiceOrient vertically at 9:16, shoot at least 720PPerformance ads

The ad bitrate row is a real conflict between two TikTok pages, so we show both and do not pick one.

What TikTok does not state for regular posts

We found no page that gives a required pixel size, a required ratio, a list of file formats or a frame rate for a regular organic post. Any site that prints a firm '1080x1920 is required' for organic video is repeating a convention, not a TikTok rule.

TikTok is not vertical only. Its Creator Academy says horizontal videos get a view full screen button and that you do not need to add black margins to make a video look vertical. The video has to be truly landscape, with no text laid over the margins.

What a 16:9 clip looks like inside a 9:16 frame

If you drop a 16:9 recording onto a 1080x1920 canvas without reframing, the picture is 1080 pixels wide and about 608 pixels tall. That is roughly 32% of the frame height, and the other 68% is bars. That is our arithmetic, not a TikTok figure.

  • Landscape video you want viewers to turn their phone for: upload it as true landscape and let full screen mode do the work.
  • Landscape video you want to fill the phone: reframe it to 9:16 instead of letterboxing it.
  • Landscape video with captions in the margins: TikTok says the video has to be truly landscape, with no text in the margins, so reframe it instead.

Our aspect ratio calculator works out the crop for any source size, and file size calculator estimates MB from bitrate and length.

How KeyMo output compares

NumberTikTokKeyMo clip
Ratio9:16 recommended for ads9:16, never 16:9
Pixels540x960 minimum for ads, 720p for long uploads1080x1920
Frame rateNot stated30 fps
CodecsNot stated for regular postsH.264/AAC
WatermarkReservation ad specs: no watermarks allowedNo watermark on any plan

KeyMo reframes landscape sources to 9:16 with automatic face tracking, so a podcast recorded in 16:9 comes out as a full vertical clip.

Sources: TikTok Creator Academy (checked 11 October 2026); TikTok Ads Manager: auction in-feed ads (checked 11 October 2026); TikTok Ads Manager: reservation in-feed ads (checked 11 October 2026); TikTok Ads Manager: creative best practices (checked 11 October 2026).

FAQ

What is the best TikTok video size?

TikTok does not name one for regular posts on the pages we read. We recommend 1080x1920 at 9:16, because it matches TikTok's recommended ad ratio and clears its stated 720p and 1080p figures.

What is the maximum TikTok video size in MB?

TikTok states up to 10 GB for TikTok Studio desktop uploads and 500 MB for non-Spark in-feed ads. We found no stated limit for uploading in the phone app.

Does TikTok accept 16:9 videos?

Yes. TikTok says horizontal videos can be uploaded and shown with a full screen button, as long as they are truly landscape with no text in the margins.

Why does my TikTok video have black bars?

Bars appear when the file's ratio does not match a vertical frame, for example a 16:9 recording on a vertical canvas. Reframe the clip to 9:16 before you upload instead of adding bars.

What resolution does TikTok say to use?

For long uploads TikTok states 720p or higher. Its Creator Rewards tips add that videos should be 1080p or higher, which is a quality tip rather than a rule.