Free forever
The former $89.99 converter is now completely free. No trial countdown, subscription, or paid converter tier.
Free forever. fully featured.
Free doesn’t mean limited. Many free video converters limit formats, output control, file size, batch processing, or clean exports. UniFab gives you the complete conversion experience.
1000+ formats
Convert videos, extract audio, and use device presets across 1000+ video and audio formats.
Batch conversion
Add multiple files or entire folders, apply your settings, and convert them in bulk with ease.
Full output control
Adjust codecs, bitrate, resolution, quality, subtitles, and audio tracks to get the output you need.
Built-in editing
Trim, crop, rotate, adjust effects, add subtitles or watermarks, manage audio, and change playback speed before conversion.
How to use the video converter software
One video converter for 1000+ formats
Convert between 1000+ video formats
Convert popular video formats, phone and social media videos, Apple formats, legacy media, transport streams, and web formats. Keep the source resolution, choose output from 1080p to 480p, adjust codec settings, or remux compatible H.264 video and audio streams without re-encoding.
Extract audio or convert between audio formats
Create compressed, lossless, or surround audio from video or audio sources. Control bitrate and channels, and retain multiple language tracks when supported by the selected output format.
Convert videos for your playback devices
Choose a device brand and model instead of researching codecs yourself. UniFab selects a compatible video format, codec, and resolution for phones, tablets, TVs, game consoles, streaming boxes, and media players.
Prepare videos for publishing platforms
Choose where you plan to publish your video, and UniFab provides a destination-based output preset with compatible codec, bitrate, resolution, and aspect ratio settings for major video and social platforms.
Control video quality and output settings
Use the video converter software to preserve the source resolution, choose output up to 4K, or create smaller Full HD, HD, and SD versions. Control H.264 or H.265, frame rate, bitrate, encoding method, and quality settings, or use lossless remux when the source streams are compatible.
Batch convert videos and folders
Converting one file at a time is slow when you have a large collection. UniFab lets you add multiple videos or entire folders, apply conversion settings in bulk, process files in different formats, and send everything to your chosen output location. Batch conversion also makes it easy to prepare videos for different devices or extract audio from multiple videos in one workflow.
Local processing with hardware acceleration
UniFab Video Converter runs locally on your Windows or Mac computer, so you can convert large files and entire folders without uploading your videos to an online service. For supported codecs and tasks, it can use NVIDIA NVENC/CUDA, Intel Quick Sync, or AMD hardware acceleration to speed up conversion. If hardware acceleration is unavailable for a specific task, UniFab can fall back to software encoding.
Edit videos before converting
Edit your video before conversion without switching to another app. Use the built-in editor to trim, crop, rotate, adjust color and effects, add or remove watermarks, manage subtitles and audio, and change playback speed—all before you convert.
Trim, crop and rotate
Trim at multiple points, crop to 16:9, 9:16, 1:1, or 4:3, and rotate the picture in four directions.
Color and effects
Adjust brightness, contrast, saturation, and gamma while watching the real-time preview.
Watermark
Add a text or image watermark, set its position and opacity, or remove an existing watermark from the input.
Subtitles
Burn in captions, soft-mux a selectable track, or export an external subtitle file with custom styling.
Audio
Adjust volume, add fades, change tracks, and preserve compatible multi-channel audio.
Speed
Set playback from 0.25x slow motion to 4x time-lapse, or build keyframed speed ramps.
Same UniFab app, 20+ AI tools beyond free conversion
Trusted by
"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
FAQs about free video converter software
Learn more through our YouTube channel, guidebook, or community discussion.
Yes. UniFab Video Converter was previously sold as a $89.99 product and is now completely free. The converter has no watermark, time limit, or file-size limit, and supports both personal and commercial use.
No. UniFab Video Converter is a permanently free converter module in the UniFab desktop app. It is not a 30-day trial or a limited export tier.
UniFab Video Converter is a strong choice for users who want a free desktop video converter for Windows and Mac. It supports 1000+ formats, batch conversion, built-in editing, hardware acceleration, and detailed output controls, with no watermark, time limit, or file-size limit.
No. UniFab Video Converter exports videos without adding a watermark.
No. UniFab Video Converter has no file-size limit or time limit for video conversion.
UniFab can use NVIDIA NVENC/CUDA, Intel Quick Sync, and AMD hardware encoding for supported codecs and tasks. When a hardware path is unavailable, the converter can fall back to software encoding.
Yes. You can add multiple files or an entire folder, apply conversion settings in bulk, and choose a shared output destination.
It supports more than 1000 video and audio formats, codecs, device presets, and web output profiles. Common examples include MP4, MKV, AVI, MOV, WMV, WebM, MP3, AAC, WAV, and FLAC.
The desktop Video Converter is designed for larger and more complex conversion jobs, with 1000+ formats, batch processing, folder conversion, local processing, hardware acceleration, and detailed output controls. The online video converter is better suited to quick browser-based conversion without installing desktop software.
UniFab Video Converter
Originally $89.99 lifetime, now 100% free forever, with batch processing and a built-in editor.
Video converter tips & resources
How to Convert MOV to MP4 Without Losing Quality: 7 Practical Methods
Learn how to convert MOV to MP4 by checking the source codecs before choosing a tool. This guide compares seven local, Apple-supported, command-line, and online methods, with practical advice for batch jobs, 4K and HDR footage, audio sync, and alpha channels.
MP3 to MP4 Converter: 4 Methods for Images and Waveforms
An MP3 needs a genuine video track before platforms such as YouTube can accept it as video. This guide compares local editors, a browser converter, cover-art workflows, and waveform tools, with clear advice on privacy, output settings, and troubleshooting. It also explains where UniFab fits after the initial MP3-to-MP4 export.
Top 8 AVI to MKV Converters in 2026 (Tested for Windows, Mac & Online)
Tested 2026 roundup of the 8 AVI to MKV converters worth using today — UniFab Video Converter, AVS Video Converter, HandBrake, VLC Media Player, CloudConvert, VEED.io, FreeConvert, and Converter App. Editor's pick is UniFab Video Converter for the cleanest free desktop workflow with batch processing, no watermark, and stream-copy lossless mode. Includes a scored comparison table, the remux vs re-encode decision framework, and 10 FAQs.
5 Ways to Convert MKV to MP4 Without Quality Guesswork
A 2026 hands-on guide to converting MKV (Matroska) to MP4 the right way. We benchmarked five tools on a 3.2 GB 4K H.265 source — UniFab Video Converter, CloudConvert, VLC, HandBrake, and FFmpeg — and unpack the container-vs-codec basics that make the difference between visually lossless remuxing and a degraded re-encode. Includes step-by-step workflows for every tool, troubleshooting for five common errors, and FAQs covering 4K, mobile, batch, and subtitle handling.
"Exactly what a free video converter should be: fast, watermark-free, and respects your privacy. The GPU acceleration alone is worth the download."