TikTok Size Converter

A fast tool to convert and validate video dimensions for TikTok, helping creators meet 9:16 portrait requirements before uploading.

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About This Tool

The TikTok Size Converter computes compatible output dimensions for portrait video and provides guidance on cropping or padding for TikTok uploads. It accepts source dimensions or presets and returns recommended final width/height in px along with the target aspect ratio.
Conceptually, it treats the problem as an aspect-ratio adjustment task: either resize to a target frame while preserving the original ratio, crop to fill a 9:16 frame, or add letterboxing to maintain both content and native aspect.
Beneficiaries include creators, editors, and social media managers who need fast, repeatable results without transcoding. Unique value comes from explicit mode options, preset support, and guidance on encoding considerations, enabling consistent TikTok-ready outputs.
Core features include dimension calculation, preset handling, validation, and export-ready results. Use cases include preparing clips from longer video, adjusting existing footage, or planning batch-ready presets for content calendars.

How to Use

  1. Provide inputs: source_width_px and source_height_px or select a TikTok preset.
  2. Choose mode: resize, crop, or letterbox.
  3. The tool computes the target dimensions instantly.
  4. Review outputs: final dimensions, aspect ratio, and cropping/padding notes.
  5. Export results or copy presets for your workflow.
How to use video size converter for tiktok

Frequently Asked Questions

Find Quick Answers

How does the converter handle aspect ratio changes?
It offers three options: resize to preserve the source aspect, crop to fill a 9:16 frame, or letterbox to maintain content with padding. Each option recalculates final dimensions and signals any loss of content or added padding with clear notes.
What presets are supported for TikTok?
Presets include common TikTok portrait sizes such as 1080x1920 and 720x1280. If a preset is chosen, the tool outputs those exact dimensions. Non-standard inputs can be converted using the resize or crop modes to reach a 9:16 target.
Can I export results for batch use?
Yes. The tool can export calculated target dimensions, aspect ratio, and recommended encoding notes as JSON or CSV, enabling reuse across projects or pipelines without re-entering data.
Is this a transcoder?
No. The tool only computes dimensions and provides guidance for downstream processing. It does not perform actual video transcoding or audio handling.

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