Step 1: Supply your FLAC files using the button above or by haul and lay.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Get your converted MP4 files.
FLAC to MP4 Conversion FAQ
What does the FLAC to MP4 converter do?
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It converts a FLAC file into MP4 format.
Will the data inside my FLAC be preserved when converting to MP4?
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Yes — the content is mapped to the MP4 equivalent. Format-specific extras that MP4 does not represent natively are omitted rather than corrupted.
Is the FLAC to MP4 conversion reversible?
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You can convert the MP4 back to FLAC on this site. If either format involved is lossy, the round-trip is not bit-perfect even though it is visually or audibly close.
How much smaller will the MP4 be than my FLAC?
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Typically 5-10x smaller for images, 5-15x smaller for audio. Exact ratio depends on the chosen quality level and the content — flat solid-colour images and silent audio compress far more than detailed photos or busy soundtracks.
Is there a file-size limit when converting FLAC to MP4?
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Free conversions have a size limit per file, set by the type of file, and the page tells you when a file is over it. A paid plan removes that limit, so much larger files can be converted.
Can I batch-convert several FLAC files to MP4 at once?
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Several files in one job need a paid plan. Free use is one file per conversion, one conversion an hour. On a paid plan you can add several files to one job, then download each result on its own or all of them in one ZIP.
What happens to my FLAC files after the conversion?
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Uploaded files are processed on our own conversion servers, nobody looks at them, and they are not shared. The upload and the converted file are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy.
Will my MP4 play on phones, tablets, and TVs?
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Yes — MP4 uses modern codecs that play natively on iOS, Android, Smart TVs, game consoles, and every modern browser.
Do I need to install software to convert FLAC to MP4?
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No. The converter runs entirely in your browser plus our cloud — no plugin, no install, no admin rights. It works on Windows, macOS, Linux, ChromeOS, iOS, and Android.
Do I need an account to convert FLAC to MP4?
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Yes. One conversion an hour is free, with no account needed, for a file within the free size limit. A paid plan removes the hourly limit and the size limit, and lets you add several files to one job.
Is there an API for FLAC to MP4 conversion?
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Yes. Every conversion this site offers is also exposed via a JSON API — see /api/ for endpoints, authentication, and rate limits. FLAC to MP4 is one of the supported pairs.
What if my FLAC fails to convert to MP4?
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Failures are usually caused by corrupted source files or unsupported FLAC variants. Re-export from the original app and try again; if it still fails, the contact page forwards the file to support so we can diagnose.
