WAV to MP3 Converter
WAV keeps every sample your recorder or audio editor produced, which is why a three-minute song takes about 30 MB. Converting to MP3 brings it down to a few megabytes while keeping the sound close to the original.
Audio Converter
or drop MP3, WAV, M4A … files here ·
Max 95 MB per file· Up to 20 files· Deleted after 30 minutes
Files are processed on our servers and deleted after 30 minutes.
Constant bitrate (CBR) gives a predictable size and works on every player. Variable bitrate (VBR) spends bits where the music needs them and is usually smaller at the same quality.
Keep the source rate unless a device asks for one. 44.1 kHz is CD standard, 48 kHz is video standard, 8 kHz is used by phone systems and AMR.
Mono halves the size of lossless files and is fine for voice recordings.
16-bit is CD quality. 24-bit keeps headroom for editing and mastering; converting a 16-bit source up does not add detail.
Optional. Seconds (e.g. 75) or minutes:seconds (1:15). Leave empty to start at the beginning.
Optional. Same format as the start time. Leave empty to keep everything up to the end.
How to use this tool
- 1
Upload WAV files
Select one or more .wav files, up to 20 per batch. Each file can be up to 95 MB, about nine and a half minutes of CD-quality stereo.
- 2
Pick the bitrate
This page starts at 320 kbps, the highest MP3 bitrate. Choose 192 kbps for a smaller file that still sounds clean, or 128 kbps for spoken word.
- 3
Convert to MP3
Press Convert to MP3 and download. The MP3 keeps the source sample rate unless you change Sample rate under Advanced settings.
The whole case for converting WAV to MP3 is one number: uncompressed CD-quality stereo streams at 1,411 kbps, while even the best MP3 stops at 320.
Why WAV files are so large
1,411 kbpsbitrate of CD-quality WAV: 44,100 samples × 16 bits × 2 channels every second
WAV is a container Microsoft and IBM introduced in 1991, and in nearly every case it holds plain PCM: each sample stored as a number, with no compression at all. That makes it ideal for recording and editing, because nothing is thrown away and every program reads it. It also means file size depends only on sample rate, bit depth, channels and length, never on what the audio sounds like. Five minutes of silence takes as much space as five minutes of drums.
MP3 works the other way. The encoder analyzes the sound and removes detail masked by louder nearby frequencies, so the bitrate you choose sets the size directly. At 320 kbps the file is less than a quarter of the CD-quality WAV; at 128 kbps it is under a tenth. The WAV format itself also tops out at 4 GB because of its 32-bit size field, a limit long multitrack sessions occasionally hit.
WAV to MP3 at 320, 192 or 128 kbps: size compared
- WAV, 16-bit 44.1 kHz stereo10.6 MB/min
- MP3 320 kbps2.4 MB/min
- MP3 192 kbps1.4 MB/min
- MP3 128 kbps0.96 MB/min
Those numbers are exact for constant bitrate, because an MP3 at 192 kbps writes 192,000 bits per second regardless of content. A four-minute WAV of about 42 MB becomes roughly 9.6 MB at 320 kbps and 5.8 MB at 192 kbps, which fits under the attachment limits of most email services and messaging apps.
Picking the level is about where the file goes next. Sending a mix to a bandmate or uploading to a platform that re-encodes anyway: 320 kbps keeps the best possible source. Posting a podcast episode or a lecture: 128 kbps is standard for speech, and setting Channels to Mono lets a single-microphone recording stay clear at 96 kbps. If the target is a video rather than an audio file, the compressing video for Discord and email guide covers those limits, and to go the other way for editing, use MP3 to WAV.
WAV vs MP3: the formats side by side
WAV
Waveform Audio File
WAV is an audio container created by Microsoft and IBM in 1991, usually holding uncompressed PCM audio. It preserves full quality, which makes it standard for recording, editing, sound effects and mastering. A minute of CD-quality stereo takes about 10 MB, so files are large. Every operating system, editor and most players open WAV, though metadata support is limited.
- Compression
- Lossless
- Transparency
- –
- Animation
- –
- Introduced
- 1991 · Microsoft and IBM
MP3
MP3 audio
MP3 (MPEG-1 Audio Layer III) is a lossy audio format developed largely at the Fraunhofer Institute and standardised by MPEG in 1993. It removes sounds the ear is unlikely to notice, shrinking music to about a tenth of CD size at 128–320 kbps. All patents have expired, and every phone, car stereo, browser and media player supports it. Quality loss is audible at low bitrates and accumulates with re-encoding.
- Compression
- Lossy
- Transparency
- –
- Animation
- –
- Introduced
- 1993 · Fraunhofer IIS / MPEG
WAV is the uncompressed file that recorders and audio editors write, and at roughly 10 MB per minute it is too heavy for email, messaging apps and most upload forms; MP3 makes the same take between a quarter and a tenth of that size.
WAV to MP3 converter questions
What is the best bitrate when converting WAV to MP3?
For music you care about, 320 kbps; it is the ceiling of the MP3 standard and the safest choice from a lossless source. For sharing demos or listening on a phone, 192 kbps is a good compromise. Podcasts, lectures and voice notes sound fine at 128 kbps, or even 96 kbps in mono.
Does WAV to MP3 at 320 kbps lose quality?
Technically yes, since MP3 discards parts of the signal the ear is least likely to notice. In practice, listening tests rarely show a reliable difference between a well-encoded 320 kbps MP3 and the WAV. Keep the WAV as your master anyway, because editing and re-exporting an MP3 compounds the loss.
My WAV is over 95 MB. How can I convert it?
Files over 95 MB cannot be uploaded, so make the WAV smaller at the source. Export the recording from your editor in sections, or as 16-bit 44.1 kHz instead of 24-bit 48 kHz, which cuts the size by about 40%. A 24-bit, 48 kHz stereo WAV reaches 95 MB in under six minutes.
Should I choose CBR or VBR?
Bitrate mode on Constant (CBR) gives a predictable size and plays on every device, including old car stereos. Variable (VBR) is usually smaller at the same perceived quality. For 320 kbps, CBR is the standard choice; VBR makes more sense at 192 kbps and below.
Will my WAV's track names and artist carry over?
Only if the WAV has them. WAV stores tags in a limited way and many recorders write none. With Keep tags and cover art on, whatever is there is copied into the MP3's ID3 tags; you can add the rest in your music app afterwards.
Can I make the MP3 louder while converting?
Yes. Turn on Normalise volume to bring the track to −16 LUFS, a common target for podcasts and streaming, which helps quiet field recordings. It adjusts overall gain; it does not compress dynamics like a mastering limiter.
