Best TikTok Video Dimensions (and the Safe Zone Everyone Ignores)

1080×1920 at 9:16 is the number everyone already knows for TikTok. It's also only half the spec that matters — the other half is where TikTok's own interface sits on top of your video, which is a fixed, predictable overlay that most people never account for until a caption or a subtitle gets buried behind it.

The dimensions, for the record

9:16 at 1080×1920px is the standard, and it's what the app is built around — content shot in any other ratio gets pillarboxed with black or blurred bars on the sides, which immediately shrinks the usable frame and reads as lower effort. TikTok technically accepts other ratios (1:1, 16:9), but neither fills the screen the way 9:16 does, and filling the screen is directly tied to watch-through, which is the metric TikTok's algorithm weighs most heavily.

File size needs to stay under 500MB regardless of ratio, and while TikTok now allows uploads up to 60 minutes through the web, almost nothing that long performs like genuine short-form content — the platform's discovery mechanics are built around videos people watch to completion within seconds, not minutes.

The safe zone nobody accounts for

TikTok's interface sits directly on top of your video on every device: the caption and username in the lower-left, the sound title running along the bottom, and a vertical stack of icons (like, comment, share, profile) along the right edge. None of that is optional or removable — it renders identically for every viewer, which means any text or subject you place in those specific zones is competing with — or hidden behind — TikTok's own UI.

The practical safe area is the center of the frame, roughly avoiding the right-hand ~15% of width (icon stack) and the bottom ~20% of height (caption and sound title). A face or subtitle placed dead center survives on every device; one placed bottom-right is gambling against the exact UI elements TikTok shows to everyone.

The FYP crop is a separate concern from the editor preview

On top of the fixed UI overlay, TikTok's For You feed sometimes shows a slightly cropped preview before a viewer taps in — meaning even content that clears the interface safe zone can still lose a sliver of frame in the scrolling feed view specifically. This is a smaller effect than the interface overlay, but it's another reason to keep genuinely critical content (not just text, but key visual detail) away from the outer edges of the frame generally, not just the specific zones the persistent UI covers.

Where creators actually lose here

• Burned-in captions positioned too low — legible in the editing app, covered by the on-screen caption and sound title once posted.
• Key visual detail placed on the right edge — a product, a face, a graphic — sitting exactly where the like/comment/share icon stack renders.
• Text sized for a full-width canvas without accounting for either safe-zone edge, so it reads fine on a preview screen and gets clipped or obscured in the actual app.

Live streaming adds yet another overlay to plan around

TikTok LIVE sessions add comment feeds and gift animations on top of the standard interface, covering even more of the frame than a regular video's UI does — content or graphics meant to stay visible throughout a livestream need to sit even further inside the safe zone than a standard upload would require.

Why this differs from Instagram's own overlay

Reels and TikTok share the same 1080×1920 canvas, but their UI overlays sit in different places — Instagram's chrome runs along the top and bottom of the frame, while TikTok's runs along the bottom and the right side. A cover or caption designed around Instagram's safe zone and reused directly for TikTok can still get clipped, because the two platforms are protecting different parts of the same canvas. Cross-posting the same video to both is fine; assuming one safe-zone layout covers both platforms isn't.

A workflow that avoids this

If your editing software supports it, overlay a mock version of TikTok's UI (many templates exist for this) while placing text and framing shots, rather than judging composition against a bare canvas. If not, a simple manual rule covers most cases: keep the right ~15% of the frame and bottom ~20% clear of anything you need seen, and center the subject rather than pushing it toward an edge. It costs nothing to check and it's the difference between a caption that reads cleanly on every device and one that's a coin flip depending on screen size.