Audacity vs AudioUtils: Which Should You Use?
Audacity vs AudioUtils: what each costs, where the free desktop editor wins, where a browser tool is quicker, and which to use for conversions and edits.
The quick answer
Use Audacity if you need to edit, record, remove noise or convert long files for free — it is a free, open-source desktop editor. Use AudioUtils for a quick conversion or single edit without installing anything, including on a phone: it runs in the browser and never uploads the file. Its free tier only converts a 10-second preview, so full-length files need Pro.
- Audacity: free and open source (GPLv3), for Windows, macOS and Linux.
- M4A, AAC and WMA in Audacity need the separately installed FFmpeg library.
- AudioUtils free tier: 5 conversions a month, each a 10-second preview.
- Same MP3 encoder — both use LAME, so quality depends on the bitrate you choose.
Do it in your browser — free, no upload
Audacity and AudioUtils both work with audio files, but they are built for different jobs, and picking the wrong one either wastes time or costs money you did not need to spend. This is a straight comparison: what each one is, what each costs, where Audacity is clearly the better tool, and where a browser tool gets the job done faster.
The short version
| Audacity | AudioUtils | |
|---|---|---|
| What it is | Desktop audio editor | Browser-based converter and single-job tools |
| Price | Free and open source | Free tier with limits; Pro from $5/month billed yearly |
| Install | Yes — Windows, macOS, Linux | No — runs in a browser, including on phones |
| Recording | Yes | No |
| Multitrack editing and effects | Yes, including noise reduction | No — one file, one job at a time |
| Batch processing | Yes, through Macros | No |
| M4A, AAC and WMA | Needs the separate FFmpeg library | Built in |
| Where files are processed | On your computer | In your browser, on your device — never uploaded |
What Audacity is
Audacity is a free, open-source audio editor released under the GNU General Public License, version 3, with official versions for Windows, macOS and Linux. It records from a microphone, edits across multiple tracks, and applies a large set of effects, including noise reduction, EQ and compression. Converting a file is one small part of what it does: you open the file, then export it in the format you want.
Two practical details matter for conversion. First, M4A, AAC and WMA files need the optional FFmpeg library, which Audacity cannot bundle because of software patents, so you install it separately before those files will open. Second, Audacity can process many files unattended through Macros: you build a Macro with the steps you want, then run it on a folder of files from Tools > Apply Macro > Palette > Files, and the results land in a folder called macro-output.
What AudioUtils is
AudioUtils is a set of audio tools that run in a browser tab. The engine is FFmpeg compiled to WebAssembly, so the work happens on your own device and the file is never uploaded to a server. Besides format converters, there are single-purpose tools for cutting, joining, splitting, compressing, normalizing, changing speed or pitch, reversing, removing silence, looping and making ringtones.
Each tool does one job on one file. There is no timeline, no multitrack view, no recording and no noise reduction, so it is not a replacement for an editor.
What each one costs
Audacity costs nothing, with no limit on file length or the number of files.
AudioUtils has a free tier and a paid Pro plan. Free users get 5 conversions per month. The output is limited to the first 10 seconds as a preview, with a 20MB input file size limit. Upgrade to Pro for unlimited, full-length conversions. Pro is $9 a month, or $5 a month billed yearly. So for converting full-length files without paying, Audacity is the free choice; AudioUtils trades that for no install and a quicker start.
Converting a file, step by step
In Audacity: open the program, open your file (installing FFmpeg first if it is M4A, AAC or WMA), then choose File > Export > Export Audio. Pick the format, such as MP3, set the bit rate and sample rate, name the file and export. Recent versions put all of this in one Export Audio window.
In AudioUtils: open the converter for the formats you need, such as WAV to MP3, drop the file onto the page, convert, and download the result.
Neither route is hard. The difference is what happens before the first step: Audacity needs to be installed, and sometimes FFmpeg too, while a browser tool starts from a link.
Does the output quality differ?
Not because of the tool. Both encode MP3 with the same LAME encoder — Audacity's Windows and Mac releases include it, and AudioUtils uses it through FFmpeg — so the same format and bitrate give comparable files. What decides quality is what you choose: lossless formats such as WAV and FLAC keep everything, while MP3 and AAC depend on bitrate, with 192 kbps or more a sensible level for music.
The difference is how much control you get. Audacity's MP3 export offers constant, average and variable bit rate modes, presets from Medium to Excessive, and any rate from 8 to 320 kbps. AudioUtils converters offer four choices — 128, 192, 256 and 320 kbps — and tools such as the pitch changer, speed changer and normalizer save MP3 at 192 kbps. Four sensible choices are enough for most people; if you need fine encoder control, Audacity has it.
Common snags when converting in Audacity
"Error importing … is an Advanced Audio Coding file." Audacity shows this when you open an M4A or AAC file without the FFmpeg library installed. Install FFmpeg using Audacity's own help pages, restart Audacity, and the file opens.
You cannot find the MP3 option. In recent versions, exporting lives under File > Export > Export Audio, and the format is chosen from the Format list inside that window rather than from separate menu items.
You only want part of the file. Select the part you want, then use File > Export > Export Selected Audio. It opens the same window but exports just the selection.
When Audacity is the better choice
- You need to edit: cut sections out of the middle, rearrange clips, or combine several tracks.
- You need to clean up sound with noise reduction, EQ or compression.
- You want to record from a microphone or other input.
- You are converting long files or large batches and do not want to pay.
- You work regularly with audio and will reuse the tool every week.
When AudioUtils is the better choice
- You cannot install software, for example on a work computer or a Chromebook.
- You are on a phone or tablet. AudioUtils runs in Safari on iPhone and in Chrome on Android.
- You need one quick job — a conversion, a trim, a join — and do not want to learn an editor for it.
- You want the file handled locally without granting a new app access to your system.
Is there a better alternative to Audacity?
It depends on the job. For recording and multitrack editing, the step up from Audacity is a full digital audio workstation — software built for music production, most of it paid. For converting a file or making one quick edit without installing anything, a browser tool is the simpler alternative. For anything in between, Audacity remains a very capable free choice, which is why it has been the default recommendation for years.
Privacy
Both keep your audio on your own device. Audacity is installed software that processes files on your computer. AudioUtils processes the file inside the browser tab and does not upload it, which also means it keeps working if you go offline after the page has loaded.
Which should you use?
If you edit audio even occasionally, install Audacity. It is free, it does far more, and it has no limits on long files.
If you just need one file converted or trimmed now, especially on a phone or a computer you cannot install things on, a browser tool is the faster way to get there. Keep the free tier's 10-second preview in mind: for a full-length file you either use Pro or use Audacity.
For the Audacity route in detail, see our guide to converting audio with Audacity.