Wide speed range
Continuously adjustable from 0.25× to 4×, faster or slower.
From 0.25× slow-down to 4× fast-forward — speed through lectures and podcasts, or slow things down for dictation, free MP3/WAV export.
Privacy-sensitive steps are processed in your browser, and data is destroyed when you close the page.
No 20- or 30-minute ceilings — clean, complete exports with no watermark or audio bumpers added.
Runs right in your desktop or mobile browser — no download needed.
Use it right away — no account required.
Privacy-sensitive steps run in your browser, and data is destroyed when you close the page. Work on meeting recordings, interviews and personal voice notes with confidence.
Continuously adjustable from 0.25× to 4×, faster or slower.
Speed change renders quickly — regular files finish in seconds.
MP3 (192kbps) or WAV (16-bit lossless), your choice.
Upload an audio file
Pick the target speed
Preview, then export and download
Import the audio, set 1.25×–2×, preview, then export MP3 for offline fast listening — no need to rely on a player's speed button. WUJIEE Audio Tools renders in seconds.
Yes — this tool works tape-style: faster raises the pitch, slower lowers it. Speech stays perfectly intelligible at 1.25×–2×.
Continuously from 0.25× (quarter speed for dictation and transcribing music) up to 4× fast-forward.
No artificial limit and no 20- or 30-minute ceiling — hours-long lecture recordings process in one go, bounded only by device memory.
13 online audio tools: convert, trim, denoise, separate vocals, transcribe speech and more — all in one place.
Browse all tools