Free Slowed + Reverb Maker Online

Slow down any song, drop the pitch and wrap it in dreamy reverb in seconds.
Preview live, then download a high-quality WAV with no signup and no watermark.

Slowed and Reverb Generator for Songs, Edits and Short Videos

Turn any track into a moody, late-night slowed + reverb edit with studio-grade speed, pitch and reverb controls that run entirely in your browser.

What Does a Slowed + Reverb Maker Do?

A slowed + reverb maker combines two classic studio moves. First, it lowers the playback speed, which stretches every sound wave and drops the pitch by the same ratio: at 85% speed a song falls about 2.8 semitones and a 120 BPM beat becomes roughly 102 BPM. Second, it places the track inside a large virtual space using convolution reverb, so vocals and chords bloom into a long, soft tail. Together, the deeper voice, slower groove and wide reverb create the dreamy, nostalgic sound behind millions of slowed edits.

How to Make a Slowed and Reverb Song Online

Upload your audio, pick a preset such as Classic, Sad or Vaporwave, then fine-tune speed, reverb type, decay, pre-delay, wet mix and tone while you listen. If you know the original tempo, enter the BPM and the tool will time the pre-delay to the new tempo for a tighter, more musical tail. When it sounds right, export an uncompressed .wav file. For the full workflow, from choosing a source file to EQ and loudness, read our step-by-step guide on how to make slowed + reverb songs online.

Who Uses This Tool?

Content creators use it to make slowed + reverb audio for TikTok, Reels and YouTube Shorts, producers sketch lo-fi, daycore and vaporwave versions of their own beats, and DJs audition half-time ideas before a set. Because every calculation happens locally with the Web Audio API, your original recordings stay private on your device and nothing is ever uploaded.

How to Make Slowed + Reverb Audio in 4 Steps

Step 1

Upload Your Song

Select or drag in an audio file. MP3, WAV, OGG, FLAC and M4A are supported.

Step 2

Choose a Preset

Start with Classic, Sad, Lo-Fi, Vaporwave or Sped Up for an instant, proven sound.

Step 3

Fine-Tune & Preview

Adjust speed, decay, pre-delay, wet mix and tone while the preview plays in real time.

Step 4

Download WAV

Render your slowed + reverb edit and save a lossless WAV file with the full reverb tail.

Upload Audio File

Drag & drop or select a file. Supported formats: WAV, MP3, OGG, FLAC, M4A

Loaded:

Waveform

0:00 / 0:00
Load a track to see its waveform. Click anywhere on it to jump to that point.
Pro Tip: Only need the chorus or a 30-second clip? Cut your song first for a faster render and a cleaner edit.
Audio Trimmer

Slowed + Reverb Controls

Presets
Pitch Shift
-2.8 st
New Tempo
—
Output Length
—

Export Settings & Preview

Audio Tip: Use headphones to hear the full stereo reverb. Mobile users: without headphones, turn the Silent/Mute switch OFF to hear sound from the speakers.
Pro Tip: Need an .MP3 for TikTok, Reels or your phone? Export the WAV here, then convert it in seconds.
WAV to MP3 Converter

Want a fuller, more polished result?

Run your slowed + reverb export through our all-in-one Sound Optimizer to fine-tune EQ, dynamics and loudness in a single pass.

Open Sound Optimizer

Frequently Asked Questions

Is this slowed and reverb maker really free?
Yes. The Slowed + Reverb Maker is completely free, requires no signup, has no daily limits and never adds a watermark to your audio.

Are my audio files uploaded to a server?
No. All slowing, reverb processing and WAV encoding happen locally inside your web browser using the Web Audio API. Your files never leave your device.

What is the best speed for a slowed and reverb song?
Around 85% is the classic slowed + reverb speed. It lowers the pitch by about 2.8 semitones and turns a 120 BPM song into roughly 102 BPM. Use 88 to 90% for a subtle lo-fi feel and 70 to 80% for darker, vaporwave-style edits.

What reverb settings work best for slowed edits?
A large hall reverb with 2.5 to 3.5 seconds of decay, 20 to 40 ms of pre-delay and a wet mix of 25 to 35% is a reliable starting point. Longer decay and a higher wet mix create a sadder, more distant atmosphere. To time the reverb precisely, use our Delay/Reverb Calculator.

Why does slowing down a song also lower the pitch?
Slowing playback stretches every sound wave, so all frequencies drop by the same ratio as the speed. This coupled pitch drop is what gives slowed edits their deep, vinyl-like sound. If you want a slower tempo in the original key, use a time-stretching tool such as our Pitch & Speed Changer.

Can I make sped up or nightcore versions too?
Yes. Move the speed slider above 100% or choose the Sped Up preset to raise both tempo and pitch, then keep the reverb light for a bright, energetic edit.

Can I download my slowed and reverb song as an MP3?
The tool exports an uncompressed WAV file to preserve full quality. You can then convert it to MP3 in seconds with our free WAV to MP3 Converter.