Aspect Ratio Video Converter is a free, browser-based tool for reframing video to a target aspect ratio — vertical 9:16 for Shorts/Reels/TikTok, square 1:1, or standard 16:9. It uses ffmpeg compiled to WebAssembly, so your video never leaves your device.
How to use the Aspect Ratio Video Converter
- Upload your video file.
- Choose your target aspect ratio and whether to crop or pad.
- Click Convert.
- Download the reframed video once processing finishes.
Why use FreeToolsNets's Aspect Ratio Video Converter?
- 100% free, with no usage limits and no account required.
- Everything runs locally in your browser — nothing you type is uploaded or stored on a server.
- Works on desktop, tablet and mobile in any modern browser.
- No installation, no plugins, and no ads blocking the tool itself.
Frequently asked questions
What's the difference between crop and pad?
Crop fills the whole frame by cutting off the edges (no black bars, but some content is lost); pad keeps the whole original frame and adds black bars to reach the target ratio.
Which ratio should I use for TikTok/Reels/Shorts?
9:16 is the standard vertical format for all three platforms.
Is this tool free to use?
Yes, completely free on FreeToolsNets, with no sign-up and no limits.
Is my data sent to a server?
No. Everything runs locally in your browser using JavaScript — nothing you enter is uploaded anywhere.
Does it work on mobile?
Yes, the widget is fully responsive and works on phones, tablets and desktops.