Video Aspect Ratio
Converter
Change your video's aspect ratio from 9:16 portrait to 16:9 landscape — the standard for YouTube, TV, presentations, and widescreen displays. No cropping or stretching. Your video stays centered with professional backgrounds filling the sides. Free and private.
Convert Your Video Now — FreeSupported Aspect Ratio Conversions
Upload any portrait or square video and ConvertPortrait will convert it to 16:9 landscape with a professional background.
Portrait to Landscape
TikTok, Reels, Shorts to YouTube, TV
Instagram Post to Landscape
Instagram feed videos to widescreen
Square to Landscape
Square videos to widescreen format
Classic Portrait to Landscape
Older portrait formats to widescreen
Understanding Video Aspect Ratios
An aspect ratio describes the proportional relationship between a video's width and height. It is expressed as two numbers separated by a colon. The most common aspect ratios in video are:
Portrait
TikTok, Reels, Shorts
Square
Instagram posts, old video
Landscape
YouTube, TV, presentations
When you change a video's aspect ratio without cropping or stretching, the empty areas need to be filled. ConvertPortrait fills those areas with your choice of professional backgrounds — blurred mirror, solid color, gradient wash, or geometric patterns — instead of leaving ugly black bars.
Why Use ConvertPortrait
No Upload Required
Your video is processed in your browser. No data leaves your device in free mode. No account, no tracking, complete privacy.
No Quality Loss
Your original video is placed at its native resolution inside the landscape frame. No cropping, no stretching, no re-encoding artifacts.
Professional Backgrounds
Four background styles — blurred mirror, solid color, gradient wash, and pattern fill — replace ugly black bars with clean, professional designs.
Change Your Video's Aspect Ratio
Convert portrait to landscape in three clicks. No software, no account, no watermark. Completely free.
Convert Your Video Now — FreeFrequently Asked Questions
What aspect ratios can I convert between?
ConvertPortrait specializes in converting 9:16 portrait video to 16:9 landscape. This covers TikTok, Instagram Reels, YouTube Shorts, Snapchat, and any other vertical video format. The output is always 1920x1080 Full HD landscape.
What is the difference between 9:16 and 16:9?
9:16 is the portrait (vertical) aspect ratio used by TikTok, Instagram Reels, and YouTube Shorts — taller than wide, optimized for phone screens held upright. 16:9 is the landscape (horizontal) aspect ratio used by YouTube, TV, monitors, and presentations — wider than tall, optimized for widescreen displays.
Does changing the aspect ratio reduce video quality?
No. ConvertPortrait does not crop, stretch, or re-encode your original video. Your footage is placed at its native resolution inside the new frame, and the empty areas are filled with a styled background. The output is always 1920x1080 Full HD.
Can I change the aspect ratio of a video that is already landscape?
ConvertPortrait is designed primarily for portrait-to-landscape conversion. If you upload a landscape video, it will still process it and add side panels if the video is not exactly 16:9. However, for best results, the tool works with vertical or near-vertical videos.
Is there a file size limit?
In free browser mode, files up to 200MB are supported. Pro users with server-side processing can upload files up to 500MB. Supported formats include MP4, MOV, WebM, and AVI.