Bulk Convert MP4 to MP3 Online — Extract Audio in Seconds

Rip audio tracks from video files in seconds.

Drop up to 50 videos at once — no install, no sign-up required.

Drop MP4 Videos Here

50 MB or 2 hours per file Up to 50 files 3 parallel conversions Html.PartialAsync("_CreditIcon", "h-3.5 w-3.5 sm:h-4 sm:w-4 text-amber-500 flex-shrink-0") 1 credit per 5 minutes

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⚡ Median MP4 → MP3 time (last 10k jobs): 578ms per minute

How it works

1 · Drop your videos
Drag & drop or choose MP4 files. No account required on Free-paid plans unlock bigger batches, higher limits, and priority queues.
2 · We extract securely
Audio extracted on our dedicated servers. Encrypted in transit & at rest. We never store filenames-only file types & sizes for accounting.
3 · Download & auto-delete
Grab your MP3 files in seconds. Files delete automatically after 1 hour. Delete anytime after downloading with one click.

About MP4 →

MP4 (MPEG-4 Part 14) is the most widely used video container format, standardized in 2001 and based on Apple's QuickTime format. It can contain video codecs like H.264/AVC and H.265/HEVC, audio codecs like AAC and MP3, subtitles, and chapter information. MP4's efficient compression and universal support make it the default format for streaming, social media, and portable devices. The format supports resolutions from SD to 8K and beyond.

Learn more: MP4 on Wikipedia

MP4 files typically contain AAC audio at 128-256 kbps, though they can also embed MP3 or even lossless audio tracks. The container separates video and audio streams, making it easy to extract audio without processing video. iPhone, Android, Windows, macOS, and all major browsers natively support MP4 playback. The .m4v extension is Apple's variant that may include DRM or chapter markers.

About MP3 →

MP3 (MPEG-1 Audio Layer III) revolutionized digital audio when it was standardized in 1993 by the Fraunhofer Society. Using psychoacoustic compression, MP3 removes audio frequencies that humans typically cannot perceive, achieving 10:1 compression or better while maintaining excellent subjective quality. MP3 supports sample rates from 8-48 kHz and 16-bit audio. At 256 kbps, most listeners cannot distinguish MP3 from the original source in blind tests.

Learn more: MP3 on Wikipedia

MP3 remains the most universally compatible audio format, supported by every music player, smartphone, computer, and web browser. While newer codecs like AAC and Opus offer marginally better compression efficiency, MP3's ubiquitous support makes it the safest choice for sharing audio. The format's patents expired in 2017, making it completely free to use without licensing concerns.

Frequently Asked Questions

What audio quality can I expect from MP4 to MP3 conversion?

Output quality depends on the source audio track in your MP4. Most MP4 files use AAC audio at 128-256 kbps. We extract and re-encode to MP3 at 320 kbps (maximum quality), which provides excellent quality for most uses. If the source audio is already MP3, we use stream copy for lossless extraction.

Will I lose audio quality converting MP4 to MP3?

It depends on the source. If your MP4 contains AAC audio, there's a small quality loss from re-encoding. If the MP4 already contains MP3 audio, we use stream copy mode for zero quality loss. For the highest quality, consider extracting to WAV first.

How long does MP4 to MP3 conversion take?

Very fast. Audio extraction doesn't require video decoding, so processing time is typically just seconds even for long videos. A 2-hour movie extracts in under a minute on our servers.

What video formats are supported?

We support MP4 (.mp4) and M4V (.m4v) container formats. These can contain various video codecs (H.264, H.265/HEVC) and audio codecs (AAC, MP3). The video track is discarded; only the audio is extracted.

What happens to chapter markers and metadata?

Audio properties (duration, sample rate, channels) transfer to the output. Video metadata (title, artist) isn't automatically copied to MP3. Chapter markers are not preserved. Use MP3 tagging software after conversion if you need metadata.

How long can my videos be?

Duration limits depend on your plan: Guest/Free: 120 minutes (2 hour), Pro: 3000 minutes (50 hours). This accommodates everything from short clips to full movies and recordings.

Why extract audio from video?

Many use cases: Create podcasts from video recordings, extract music from music videos, make ringtones from movie clips, archive audio from video interviews, or reduce file size when you only need the audio. MP3 files are typically 90% smaller than the source video.

Is stream copy mode automatic?

Yes. When we detect the source audio is already MP3-encoded, we automatically use stream copy mode (-acodec copy) for instant, lossless extraction. No configuration needed.

What are the limits for this converter?

Tier	Max File Size	Max Files/Batch	Parallel Processing
Guest/Free	50 MB	50 files	3 at once
Pro	2048 MB	1000 files	6 at once

Note: File size limits are specific to this converter. Batch and parallel processing limits apply to all images converters site-wide. See all converter limits →

How are credits calculated for this conversion?

Cost: 1 credit per 5 minutes

How it works:

Files up to 5 minutes: 1 credit
6-10 minutes: 2 credits
11-15 minutes: 3 credits
16-20 minutes: 4 credits

Example: A 10-minute file = 2 credits. A 180-minute (3h) audiobook = 36 credits.

Why per-minute? Audio conversion time scales with content duration, not file size. Longer audio requires proportionally more processing.

What are my daily and monthly credit limits?

Credit allocations vary by account tier:

Tier	Daily Limit	Monthly Limit
Guest	100 credits/day	—
Free	100 credits/day	—
Pro	—	12,000 credits/month

Daily credits (Guest & Free tiers) reset every day at midnight UTC. Monthly credits (Pro) reset on your billing cycle date.

Note: With 1 credit per 5 minutes, video files under 5 MB cost 1 credit each. Pro users can convert 12,000 video files per month.

Answers at a Glance

Quick answers to common questions.

What's New in MP4 to MP3

Latest improvements to this converter

Last updated December 16, 2025

Dec 16, 2025

Initial release of MP4 to MP3 converter for high-quality audio extraction.

Need to get more done? Pro starts from $5.

1 GB files 1,000 per batch Priority queue Web + API

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