Bulk Convert WAV to OPUS Online — Compress Without Compromise

Reduce file sizes by 90%+ while preserving near-lossless audio quality.

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

Drop WAV Files Here

50 MB or 2 hours per file Up to 50 files (2 GB limit) 3 parallel conversions 1 credit per 5 minutes

Encrypted EU Servers Auto-delete 1h

⚡ Median WAV → OPUS time (last 10k jobs): 1.7s per minute

How it works

1 · Drop your files
Drag & drop or choose WAV files. No account required on Free—paid plans unlock bigger batches, higher limits, and priority queues.
2 · We convert securely
Processed 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 OPUS files in seconds. Files delete automatically after 1 hour. Delete anytime after downloading with one click.

About WAV →

WAV (Waveform Audio File Format) is an uncompressed audio format developed by Microsoft and IBM in 1991. It stores raw PCM (Pulse Code Modulation) audio data, preserving every sample from the original recording without any quality loss. WAV supports 16/24/32-bit depth, sample rates from 8 kHz to 192 kHz (commonly 44.1/48 kHz), and up to 65,535 channels. It's the standard working format for audio professionals in recording studios, broadcast facilities, and sound design workflows worldwide.

Learn more: WAV on Wikipedia

The main tradeoff is file size: a 3-minute stereo track at CD quality (44.1kHz, 16-bit) is approximately 30 MB. While this makes WAV impractical for streaming or portable devices, it remains essential for editing, archiving, and any workflow where audio quality is paramount. Converting to MP3 reduces file size by 90% or more while maintaining perceptually transparent quality for most listeners.

About OPUS →

OPUS is a modern, open-source, royalty-free audio codec developed by Xiph.Org Foundation and IETF, standardized in RFC 6716 in September 2012. It was designed to replace both Vorbis (for music) and Speex (for voice), combining the best of both into a single codec. OPUS achieves exceptional quality at low bitrates—transparent quality at 128 kbps for music, and near-transparent voice at just 32 kbps. It supports bitrates from 6 kbps to 510 kbps and sample rates from 8 kHz to 48 kHz.

Learn more: Opus on Wikipedia

OPUS is the mandatory audio codec for WebRTC, making it the native format for video calls (Discord, Zoom, Google Meet, Teams) and voice messaging (WhatsApp, Telegram). It excels at both speech and music, adapting dynamically to content. OPUS files use the Ogg container (.opus extension) and play in all modern browsers (Chrome, Firefox, Edge, Safari 15+), VLC, and most media players from 2015 onward. For streaming, voice chat, podcasts, and any application where quality-per-bit matters, OPUS is the current state of the art.

Frequently Asked Questions

What is the difference between WAV and OPUS?

WAV stores uncompressed, lossless audio—full quality but massive files (10MB per minute at CD quality). OPUS uses psychoacoustic compression to achieve near-transparent quality at 10-20x smaller file sizes. OPUS is the preferred codec for streaming, voice chat, and modern audio applications.

Will converting WAV to OPUS reduce audio quality?

Technically yes, but usually imperceptible. We encode at 192 kbps—a bitrate where even trained audio engineers struggle to distinguish OPUS from the original in blind tests. For archival purposes, keep your original WAV files.

What bitrate do you use for OPUS encoding?

We encode at 192 kbps VBR (variable bitrate) using the reference OPUS encoder. This provides near-transparent quality for both music and voice. OPUS VBR allocates more bits to complex passages and fewer to silence, maximizing quality per byte.

How much smaller will my OPUS files be?

OPUS files are typically 10-20x smaller than WAV files. A 50MB WAV file (about 5 minutes of CD-quality audio) converts to approximately 2.5-5MB as an OPUS file. This makes OPUS ideal for podcasts, audiobooks, voice recordings, and any application where storage matters.

Can I convert OPUS back to WAV?

Technically yes, but it won't restore quality. Converting OPUS to WAV creates an uncompressed file, but the audio data removed during OPUS compression is gone permanently. The WAV file will be larger but won't sound better. For editing workflows that require WAV, always keep your original recordings.

Which devices and platforms support OPUS?

Excellent modern support. Chrome, Firefox, Edge, Safari 15+, Android, VLC, foobar2000, and most media players from 2015 onward support OPUS. It's the native codec for WebRTC (Discord, Zoom, Google Meet). For maximum legacy compatibility (pre-2015 devices), MP3 remains more universal.

How long can my audio files be?

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

Is OPUS better than MP3 for compression?

Yes, significantly. OPUS at 64 kbps sounds comparable to MP3 at 128 kbps. At equal bitrates, OPUS consistently outperforms MP3 in listening tests. OPUS also handles voice content exceptionally well, making it ideal for podcasts and spoken word.

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, audio files under 5 MB cost 1 credit each. Pro users can convert 12,000 audio files per month.

Answers at a Glance

Quick answers to common questions.

What's New in WAV to OPUS

Latest improvements to this converter

Last updated December 21, 2025

Dec 21, 2025

Initial release of WAV to OPUS converter with high-quality OPUS encoding.

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

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

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