Video Aspect Ratio Changer
Convert video between 16:9, 9:16, 4:3, 1:1
Drag & drop or click to upload
MP4, WebM, MOV
What is Video Aspect Ratio Changer?
A free tool to change your video's aspect ratio. Convert between 16:9 (landscape), 9:16 (portrait/TikTok), 4:3 (classic), 1:1 (Instagram square), and custom ratios. Choose crop, letterbox, or stretch modes — all processed locally in your browser.
How to use
- Upload your video and select the target aspect ratio from the presets.
- Choose a resize mode: crop (fill frame), letterbox (add bars), or stretch to fit.
- Adjust the crop position if needed, preview the result, and download.
Result
You recorded a 16:9 webinar and need a 1:1 square clip for Instagram. Upload the video, select 1:1, choose crop mode, drag to center the speaker in frame, and download the square version.
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