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Aspect Ratio Converter
FreeResize any video to any aspect ratio — crop, pad or stretch. MP4, MOV, AVI, MKV, WebM and more.
100% PrivateNo UploadBrowser-side7 Platform Presets
Drop your video here
MP4, MOV, AVI, MKV, WebM, FLV, TS, 3GP…
YouTube
16:9 · 1920×1080
TikTok
9:16 · 1080×1920
1:1 · 1080×1080
Reels
9:16 · 1080×1920
Smart Crop
Center-cropped to fill the target ratio perfectly — no black bars, no distortion.
Letterbox / Pillarbox
Choose Pad mode to add bars instead of cropping. Pick any bar colour — black is default.
All formats
MP4, MOV, AVI, MKV, WebM, FLV, TS, 3GP — any video file, converted in your browser.
Processing happens 100% in your browser. Your video never leaves your device. Large files (1 GB+) may take a minute — processing time depends on your device.
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