Rotate a video, losslessly.
Fix a sideways or upside-down video in seconds. The picture is not re-encoded, so nothing is lost. On your device.
How do I rotate a video for free?
Pick Turn right, Turn left or Turn 180° and drop the video into Cutmallow's free rotator above. The turn is written into the MP4 as its rotation setting, which phones, browsers and video sites all honour, and the video itself is copied without re-encoding: it takes seconds and the quality is identical. Nothing is uploaded and there's no watermark.
Updated
- Turns
- 90° and 180°
- Quality
- Identical
- Speed
- Seconds
- Size limit
- None
How to use it
Pick the turn: right, left or 180°.
Drop a video, or tap to pick one.
Save the MP4. On a phone, the share sheet offers Save Video.
How it works
Phones never record sideways pixels: they record the sensor as it is and store a rotation setting in the file that tells players which way is up. When that setting is wrong (the phone guessed while lying flat, or a screen recording came out sideways), the video plays on its side.
This tool rewrites that setting. It copies the encoded video packets into a new MP4 and adds the turn you chose to the rotation, so nothing is decoded or re-encoded: the quality cannot change, and a long video finishes in seconds. Phones, browsers and the big video sites read the rotation setting.
It runs on Mediabunny, an open-source media library, in a background thread of the page. Your video never leaves your device.
Tips for a better result
- Not sure which way? Turn right fixes a phone video recorded with the top to the left.
- Upside down? Pick Turn 180°.
- Need it mirrored too? Use Mirror, or the flip video page.
Turn it into a Short
Cutmallow's free editor finishes the job. After rotating, tap Edit in Cutmallow and your MP4 opens there, still on your device.
- Cuts the pauses and filler words
- Writes animated word-by-word captions
- Exports a 9:16 MP4 for Shorts, Reels and TikTok
Frequently asked questions
Something else? Write to hello@cutmallow.com.
Does rotating a video lose quality?
No. The video is copied exactly and only its rotation setting changes, so every frame is identical to the original.
How do I rotate a video on iPhone?
Open this page in Safari, pick the turn, tap the drop box and choose the video from Photos. Tap Save MP4: the share sheet offers Save Video. The Photos app can also rotate a video with Edit, then Crop, then the rotate button.
Why does my video play sideways on one site but not another?
Videos store which way is up as a setting. Most players read it; a few older editors and players ignore it and show the raw sideways picture. A file rotated here has the correct setting for players that read it.
Is my video uploaded anywhere?
No. Your video never leaves your device. The file is opened and processed by your own browser, and the result is saved straight from your device.
Is there a file size or length limit?
No. The file is read from your device a piece at a time and the result is written to the browser’s private storage, so long and very large videos work. The only limit is free space on your device.