How to convert WAV to Opus
- 1
Upload your file
Drag and drop a file or click to select one. Keep this page open while the file uploads and converts.
- 2
Convert WAV to Opus
NexMedia converts WAV to Opus on its own servers. Processing time depends on the file size and how busy the queue is.
- 3
Download the converted file
When the conversion finishes, the download appears on this page. Your converted file is kept for 2 hours, then deleted.
About WAV
WAV (Waveform Audio File Format) is a Microsoft and IBM container that normally stores uncompressed PCM audio.
Recording, editing and mastering, where every sample has to be kept exactly.
Uncompressed audio is large, about 10 MB per minute of CD-quality stereo, and a classic WAV file is limited to 4 GB.
Convert WAV to Opus online free, no account required — Opus is a modern open lossy codec for speech and music.
Change WAV to Opus without losing quality — convert WAV to Opus free in your browser.
Why is my WAV file 10 MB per minute of audio? WAV stores every sample uncompressed, so a three-minute song is around 30 MB — lossless or lossy compression shrinks it dramatically without audibly changing the music.
About Opus
Opus is an open, royalty-free lossy audio codec standardised by the IETF in 2012 (RFC 6716). It handles both speech and music well, from very low to high bitrates.
Voice and video calls, WhatsApp voice messages, WebRTC, and the audio track of WebM videos.
Opus always decodes at 48 kHz, and some older players and devices do not support it.
Why convert voice recordings to Opus? It stays clear at very low bitrates, so calls and dictation shrink dramatically without becoming hard to understand.
What changes when you convert WAV to Opus
- The audio is decoded and re-encoded as Opus at the default settings, so the result is close to the WAV but not bit-identical.
- Opus uses lossy compression: the encoder discards the detail that is least noticeable, so the file is smaller than the WAV but cannot be turned back into the original.
Settings you can change
Before you convert WAV to Opus, you can adjust: Audio codec, Rate control, Audio bitrate, Quality (VBR), Sample rate, Channels, Normalize loudness, Trim start, Trim duration, and Keep tags.
Limits
Each plan sets a maximum file size and a number of conversions per day, and video and audio files also have a maximum length. Guests can convert files up to 100 megabytes and 5 per day; a free account raises this to 500 megabytes and 25 per day; paid plans go up to 100 gigabytes.
Your converted Opus file is kept for 2 hours, then deleted.
WAV to Opus: questions and answers
Does converting WAV to Opus reduce quality?
The audio is decoded and re-encoded as Opus at the default settings, so the result is close to the WAV but not bit-identical. Opus uses lossy compression: the encoder discards the detail that is least noticeable, so the file is smaller than the WAV but cannot be turned back into the original.
What is the difference between WAV and Opus?
WAV is an uncompressed audio format. Opus is a modern open lossy codec for speech and music.
Can I change the settings when converting WAV to Opus?
Before you convert WAV to Opus, you can adjust: Audio codec, Rate control, Audio bitrate, Quality (VBR), Sample rate, Channels, Normalize loudness, Trim start, Trim duration, and Keep tags.
Do I need an account to convert WAV to Opus?
No. You can convert WAV to Opus without an account; signing in raises the file-size and daily limits.
How long is my converted Opus file kept?
The Opus file you convert from WAV is kept for 2 hours, then deleted automatically.
Will the Opus file be smaller than my WAV?
Opus uses lossy compression: the encoder discards the detail that is least noticeable, so the file is smaller than the WAV but cannot be turned back into the original.
When I convert WAV to Opus, is the audio re-encoded?
The audio is decoded and re-encoded as Opus at the default settings, so the result is close to the WAV but not bit-identical.