UniFab Video Converter: Originally $89.99 lifetime. Now 100% free forever.
Learn More >Any format you need, 1000+ supported
- Video Converter
- Audio Converter
- Device Converter
- Web Video Converter
UniFab supports the full library of mainstream video containers. MP4 for phones and social, MKV with multi-track audio and subtitles preserved (lossless remux when source is H.264/AAC), MOV for Apple workflows, plus AVI / WMV / FLV / M2TS / TS / WebM and 990+ more. Pick any output resolution from Full HD 1080p down to SD 480p, with full codec control on every job.
Extract crystal-clear audio from any video, or convert between audio formats. UniFab handles every common codec: universal MP3 for podcasts and audiobooks, AAC for Apple devices, lossless WAV and FLAC for studio archives, and Dolby AC3 5.1 surround for home cinema. UniFab preserves multi-track audio (EN / JP / KR / DE …) end-to-end so you never lose a language stream.
Don't know which codec or resolution your device wants? UniFab's device profiles auto-pick the right settings for the exact phone, tablet, smart TV or streaming box you own. Choose the brand and model, hit Convert, and you're done. No spec sheets, no guesswork.
Every platform has its own preferred codec, bitrate and aspect ratio. UniFab's one-click presets meet them out of the box, so your uploads pass each platform's auto-encoder cleanly without quality loss. We built these presets around the platforms that account for most of the world's video uploads.
Why UniFab free video converter
Free should never mean compromised. UniFab delivers lossless quality, lightning-fast GPU encoding, and 1000+ format support, without a single paywall, watermark, or hidden cap.
Change video format for any device or platform
A complete video format converter for every screen you own. UniFab's conversion engine handles MP4, MKV, AVI, MOV, MP3 and 1000+ other codecs, with 100+ ready-made device presets so your output just plays.
- One-click format conversion for all major video and audio formats.
- Device-ready presets for phones, tablets, TVs, game consoles, and more.
- Platform-optimized exports for YouTube, TikTok, Instagram, and more.
HD video converter: convert videos without quality loss
A true HD video converter for 720p and 1080p Full HD sources. UniFab preserves every pixel of picture and every audio channel, through lossless remux when the source allows, or high-bitrate re-encoding when format conversion is required.
- Preserve quality during format conversion for supported sources.
- Multiple resolution presets from SD to Full HD.
- Flexible codec and bitrate settings for quality & file size control.
Up to 50× faster conversion with GPU acceleration
UniFab taps your GPU's dedicated encode block (NVIDIA NVENC, Intel Quick Sync, AMD VCE), not just the CPU like most other free converters. The result: lightning-fast conversion at up to 50× the speed of CPU-only tools, with zero compromise on output quality.
- Hardware-accelerated H.264 and H.265 encoding.
- Supports NVIDIA, Intel, and AMD GPUs.
- Automatic fallback for unsupported codecs.
Efficient batch processing for large workloads
Drop an entire folder, pick one output format, and let UniFab batch convert every file in a single job. Built for content creators, podcasters and archivists with backlogs of video to process. Turn an overnight queue into a few minutes of work.
- Add entire folders in one click.
- Apply the same settings across all files.
- Process multiple files simultaneously for faster results.
Free online conversion, no download required
No software install, no sign-up, no credit card. Use UniFab's free online video converter directly in any modern browser: Chrome, Safari, Firefox or Edge. Works on Windows, Mac, Linux and Chromebook.
- Convert files online in just a few clicks.
- Secure uploads with automatic file deletion.
- No watermark, no daily limits.
More than a video converter: six built-in editing tools
Trim, crop, watermark, subtitle, color-grade, speed-ramp, without opening a separate editor.
How to convert video for free in three steps
Same UniFab app, 20+ AI tools beyond free conversion
Import Videos from DVDFab and StreamFab
GPU & NVIDIA CUDA Processing Acceleration
Powered by Advanced AI for Top-Tier Results
Smart, Automated, and Batch Processing Capabilities
FAQs about free video converter
Learn more through our YouTube channel, guidebook, or community discussion.
Yes. 100% free forever. Originally sold for $89.99 lifetime or $59.99 yearly, now permanently free for everyone, personal and commercial use.
UniFab Video Converter
Originally $89.99 lifetime, now 100% free forever, with batch processing and a built-in editor.
Tips & Resources About Video Converter
Trusted by
Media
Youtuber
Users
"Exactly what a free video converter should be: fast, watermark-free, and respects your privacy. The GPU acceleration alone is worth the download."
"UniFab's GPU acceleration is the real deal. Anyone used to CPU-only converters will be shocked at how fast a Full HD job finishes."
"One of the most generous free tiers on the market. No time limit, no watermark, all formats. A clear winner among free Windows video converters."
"Editor's Pick for free Windows video tools. Subtitle handling, multi-track audio support and format breadth are above the field."
"Lossless remux on MKV to MP4 just works, no transcode penalty. Hard to beat the value when it costs nothing."
"UniFab takes the friction out of free converters. No nag screens, no upsells, no surprise watermarks. Just convert and go."
YouTech
Youtuber with 1.71M followers
"For a free product this is unfair. UniFab's lossless MKV → MP4 remux just works, GPU acceleration is on by default, and I haven't found a single format it can't handle. Replaced my paid converter in one afternoon."
Converting my entire family-trip Full HD MKV archive for the smart TV. UniFab nailed it without re-encoding. Saved a full weekend of waiting on the old converter.
Eric
Photographer
As a teacher I turn MKV class recordings into MP4s every day. UniFab is 3× faster than the free tool I used before, and the batch mode is a lifesaver.
Sophia
Vlogger
Extracted MP3 audio from 200 podcast videos in one overnight batch. Zero failures, no babysitting, MP3 quality identical to source. Free should never feel this premium.
Jackson
Videographer