TikTok Video Size Checker

What Is the TikTok Video Size Checker?

This tool checks entered pixel dimensions against TikTok's recommended vertical video size (1080×1920, 9:16) and flags whether they match.

How to Use This Tool

Enter your video's width and height in pixels. The comparison against TikTok's recommended size appears instantly.

What the Checker Tests

You type a width and a height in pixels, and the tool compares them with a single reference: 1080 by 1920, the vertical 9:16 shape. If both numbers are identical to the reference, it tells you the size matches. If either differs it says the size does not match and that the video may be cropped or scaled. There is no partial credit, so a video at 720 by 1280, which has the same 9:16 shape, is still reported as a mismatch because the pixel counts differ from the reference.

The checker looks at pixel dimensions only. It does not read a video file, and it does not evaluate file size, frame rate, bitrate, codec, or length. If any of those matter for your upload, check TikTok's own help documentation. The reference entry in the tool is listed as a video cover size, but the shape it uses is the same full-screen vertical frame used for vertical video generally.

Worked Examples (Hypothetical Numbers)

• 1080 by 1920: exact match.
• 720 by 1280: mismatch, but 720 divided by 1280 equals 0.5625, the same as 1080 divided by 1920. This is the same shape at a lower resolution, so it will not need cropping, though it has fewer pixels.
• 1920 by 1080: mismatch. These are the reference numbers swapped, so the video is horizontal. Shown full-screen in a vertical player it would either have black areas above and below or be cropped heavily at the sides.
• 1080 by 1350: mismatch. This 4:5 shape is shorter than 9:16, so expect the platform to add space or trim it depending on how it is displayed.

How to Check Your Video

• Find the resolution of your export in your editing app's export settings or in the file properties. Use the displayed width and height, not the rotation metadata alone.
• Enter the width first, then the height. Getting them the wrong way round is the most common cause of an unexpected mismatch.
• If the tool reports a mismatch, divide width by height. A result near 0.5625 means the shape is 9:16 and you only need to scale. Any other value means reframing the shot.
• Re-export at the target dimensions and check that captions and faces are visible.

Planning Safe Areas

Even a perfectly sized vertical video can lose information behind on-screen interface elements. The caption, username, buttons, and progress bar overlay parts of the frame, especially near the bottom and right edge. When you design text overlays, keep the key content well inside the frame, and preview it in the app before posting. The tool cannot measure safe areas, so treat this as a manual review step.

Common Mistakes

• Filming horizontally and expecting a full-screen vertical result. Turn the phone or reframe in editing.
• Upscaling a low-resolution clip to reach 1080 by 1920. The numbers will match while the picture stays soft.
• Assuming a mismatch will block the upload. It only tells you the video may be cropped or scaled, so decide whether that is acceptable.
• Ignoring other limits such as length or file size. The size checker does not cover them.

Interpreting the Result

Treat a match as confirmation that the pixel dimensions equal the reference. Treat a mismatch as a cue to look at the shape. Since app specifications can change, confirm current recommendations on TikTok's own help pages before you produce a large batch of videos.

Frequently Asked Questions