MP3 to M4A route
MP3 to M4A Converter
Convert MP3 files to M4A in a batch queue. Upload one or many — Shorty handles per-file format, quality, and trim controls before you download the converted M4A outputs.
Runs locally in your browser
Privacy-firstUp to 100 MB per file · 3-file batch limit
How it works
Three steps. No friction.
Upload
Drop or paste any file — Device mode keeps it on your machine.
Pick a target
Choose a format (or a compress preset). Per-file controls if you need them.
Download
Grab a single file or zip the whole batch in one click.
Built for
Common use cases
Batch-convert MP3 files into M4A for a faster handoff.
Drop a folder of MP3 uploads and download zipped M4A outputs in one click.
Tweak per-file quality and trim before exporting cleaner M4A versions.
MP3 → M4A batch converter
MP3 to M4A Converter
Same workspace as the rest of the converter — Device mode keeps everything in your browser, Cloud mode runs jobs on our servers. Free covers most batches; Premium lifts the per-file size and batch caps.
M4A is preselected on this route, but every uploaded file keeps its own format picker so you can still redirect any item to another valid target without re-uploading.
MPEG-1 Audio Layer 3
About MP3 (source)
Lossy audio compressed by perceptual coding. The default for podcasts, voice memos, and music distribution — small files, universal playback.
MPEG-4 Audio
About M4A (target)
AAC-encoded audio in an MP4 container. Better quality than MP3 at the same bitrate. Native on Apple platforms; widely supported elsewhere.
Premium
Bigger files. Faster encoders. Lossless presets.
Up to 500 MB/file, 15-file batches and Cloud GPU queue. Cancel any time.
Upgrade to PremiumFAQ
Frequently asked
Yes. Converting MP3 to M4A is free. Device processing runs in your browser with no account needed; Cloud processing (better encoders, queue tracking) is also free with a quick signup. Shorty Premium unlocks larger file sizes and bigger batch limits for high-volume workflows.
Yes. Each uploaded file gets its own queue card with independent format, quality, and processing controls. You can convert the entire batch at once or start individual items in any order.
Available controls depend on the file type. Audio and video files expose bitrate and trim options. Image files include quality and resolution scaling. PDF conversions include page range and render quality settings where applicable.
Device processing runs conversions locally in your browser — ideal for quick jobs, privacy-sensitive files, and works without an account. Cloud processing queues the job on Shorty's servers and keeps outputs ready to download — free with a quick signup (no card). Premium lifts the file-size and batch caps on top of either mode.
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