HEVC to AAC Converter

How to Convert HEVC to AAC Online

1. Upload Your HEVC File: Drag and drop or click "Add Files" to select a .hevc clip. Batch upload is supported.
2. Pick Quality Preset or Bitrate: Under File Compression, choose a Quality Preset (Highest, High, Medium, Low, Lowest) or switch to Constant Bitrate (96-320 kbps) for a fixed rate, Variable Bitrate for size savings on quiet passages, Custom Bitrate to type any kbps, or Specific file size to cap output in MB/KB.
3. Set Channels, Sample Rate, and Trim (Optional): Audio Channel toggles Mono or Stereo (or keep ORIGINAL). Audio Sample Rate offers 8000, 12000, 16000, 24000, 44100, or 48000 Hz. Under Trim, switch from Unchanged to Trim and enter Start Time + Duration in seconds or HH:MM:SS.sss.
4. Convert and Download: Click Convert. Files process in your browser session — no sign-up, no watermark.

Why Convert HEVC to AAC?

HEVC (H.265), ratified by ITU-T in January 2013, is the video codec behind 4K Blu-ray, iPhone "High Efficiency" recordings (default since iOS 11, 2017), and most modern 4K streaming. AAC (Advanced Audio Coding), standardized as MPEG-2 Part 7 in April 1997, is the default audio codec for YouTube, Apple Music, and the AAC track inside virtually every HEVC recording made on an iPhone or Android phone. Extracting it to a standalone .aac file means you keep just the soundtrack — no video, no container overhead.

A raw .hevc file is an Annex B elementary stream and technically video-only — most files users call "HEVC" are MP4 or MOV containers carrying H.265 video plus an AAC track. This tool handles both cases: it pulls the embedded AAC where present, or transcodes whatever audio stream exists into AAC.

• Pull soundtrack from iPhone 4K recordings — iPhones since the iPhone 7 record in HEVC + AAC by default. Extracting just the AAC turns a 200 MB 4K clip into a 3-5 MB audio file for AirDrop or Voice Memos archiving.
• Save concert or interview audio — A 10-minute 4K HEVC concert clip is often 800 MB-1.5 GB. The AAC track at 192 kbps is roughly 14 MB — small enough for email, Slack (1 GB free cap), or Discord's 10 MB free upload limit since Sept 2024.
• Feed audio into podcast or video editors — Final Cut, Premiere, Audition, and DaVinci Resolve all import AAC natively. Stripping the video first cuts decode load for audio-only edits.
• Universal device playback — AAC plays natively on iOS, Android, Windows 10/11, macOS, Chrome, Firefox, Edge, Safari, smart TVs, and car infotainment. HEVC video playback still varies (Firefox added it in 2024 on supported hardware only).
• Smaller files for cloud sync — iCloud's 5 GB free tier and Google Drive's 15 GB shared tier fill fast with 4K HEVC. Extracted AAC audio is roughly 1-5% of the original size.
• Archive lectures, sermons, or podcasts — Talk-content AAC at 96-128 kbps is indistinguishable from the source and stores hundreds of hours per gigabyte.

HEVC vs AAC — Format Comparison

AAC Bitrate Guide — Pick by Content Type

For the reverse or related conversions, see HEVC to MP3, HEVC to M4A, HEVC to WAV, or AAC to MP3. To shrink an existing AAC file further, try compress AAC; to cut a segment, trim AAC.

Frequently Asked Questions

Why is my HEVC file's audio already AAC — do I still need to convert?

Usually yes, because the AAC is buried inside an MP4/MOV container alongside the H.265 video. Extracting it gives you a standalone .aac file that's roughly 1-5% of the original size and plays anywhere. If the source audio is already AAC, the tool can re-encode it — for closest-to-original fidelity, pick the Highest Quality Preset or set Custom Bitrate to match the source (commonly 192 kbps for iPhone, 256 kbps for high-bitrate camcorders).

What bitrate should I use for music vs. voice?

For music, 192-256 kbps stereo AAC is widely considered transparent — most listeners cannot distinguish it from the source. Apple Music streams at 256 kbps AAC. For voice content like interviews, lectures, sermons, or podcasts, 96-128 kbps stereo (or 64 kbps mono) is plenty and cuts file size by half or more.

Will the output AAC play on my iPhone, Android, or car stereo?

Yes. AAC has been the default audio codec on iOS since the iPod era and is natively supported on Android 4.0+, Windows 10/11, macOS, all major browsers, and essentially every car infotainment system built since 2010 (CarPlay, Android Auto, and stock head units). The .aac ADTS container is the most universal; if you need iTunes/iPhone Music library compatibility, consider M4A instead via HEVC to M4A.

Can I trim the audio while converting to skip the silent intro?

Yes. Under the Trim section, switch from Unchanged to Trim, then enter Start Time (e.g., 00:00:15 to skip the first 15 seconds) and Duration (how long to keep). Times accept plain seconds or HH:MM:SS.sss format. The trim happens during the same pass — no second tool needed.

Why does my raw .hevc file have no audio at all?

A bare .hevc file is an Annex B HEVC elementary stream, which is video-only by spec — it carries no audio track. Files like that come from screen recorders, FFmpeg's -c:v copy to a raw stream, or some Android apps that save the video stream separately. If your .hevc truly has no audio, the converter cannot create one out of thin air. Check whether you have a matching .mp4 or .mov sibling that contains the audio.

Is AAC actually better than MP3 at the same bitrate?

In blind listening tests, yes — particularly below 128 kbps. AAC uses more efficient psychoacoustic models, longer transforms, and tools like Perceptual Noise Substitution that MP3 lacks. Apple, YouTube, and most streaming services standardized on AAC for this reason. The gap narrows above 192 kbps where both are perceptually transparent for most listeners.

How do Mono, Stereo, and ORIGINAL differ in the Audio Channel dropdown?

ORIGINAL keeps the source layout — if your HEVC has a 5.1 surround track, you get a downmixed stereo or surround AAC depending on the source. Stereo forces two channels (recommended for music and most video soundtracks). Mono collapses to one channel, halving the file size and useful for voice-only content where stereo separation isn't needed.

What sample rate should I pick — 44100 or 48000 Hz?

48000 Hz is the standard for video soundtracks and what almost every HEVC camera records, so leaving it at 48000 (or ORIGINAL) avoids unnecessary resampling. 44100 Hz is CD-audio standard and what most music apps expect. For voice-only content, 16000 or 24000 Hz cuts file size with no perceptible quality loss — telephony uses 8000 Hz, FM-radio-quality voice uses 22050 Hz.

Does this work if my "HEVC" file is really an MP4 with H.265 inside?

Yes. The tool accepts .hevc extensions, but if your file is an MP4 or MOV carrying H.265 video, rename the extension or use the matching converters: MP4 to AAC, MOV to AAC, or extract video first with HEVC to MP4 and then MP4 to AAC. Most iPhone "HEVC" recordings are actually .mov containers — check the extension in Files.app or Finder.