How to slow down a song from YouTube
- Save the audio from the YouTube video to your device (any audio file you already have works too).
- Drop the file onto the box above, or click to choose it. Nothing is uploaded — it stays on your computer.
- Pull the speed slider down. The pitch drops naturally as it slows — the real, musical slowdown, not a pitch-locked one.
- Shape it with the bass boost, EQ and reverb if you like, then download the result — a WAV of the slowed audio, or, for a video, the slowed video file itself.
Why not just use YouTube's speed controls?
YouTube at 0.75×
- Pitch is locked in place
- Sounds thin, tinny and robotic
- No bass boost, EQ or reverb
- Can't download the result
Slow My Song at 0.75×
- Pitch drops naturally, like vinyl
- Deep, musical, analog slowdown
- Free bass boost, EQ and reverb
- Download the slowed WAV or video
When you slow a video down on YouTube, it keeps the pitch fixed. That sounds thin, tinny and robotic — because real audio doesn't work that way. Slow My Song uses true varispeed: speed and pitch move together, so a song slowed to half speed also drops an octave, exactly like a record or tape player spinning slower. That natural, deeper sound is what most people are actually looking for when they search for a way to slow a song down properly. Prefer the tempo down but the pitch unchanged? Flip on Keep pitch and you get that too.
Free bass boost — no paywall
Want more low end? Turn the Bass Boost knob up for an instant one-knob low-shelf lift, or open the 10-band graphic EQ and use the Bass Boost preset to dial the bass exactly where you want it. Other "bass booster" sites hide this behind a Pro wall — here it's free, runs entirely in your browser, and you can download the boosted track as a WAV. Great for cars, headphones, subs and basshead edits.
Make a slowed + reverb edit
The slowed + reverb (and chopped & screwed / vaporwave) sound is just two moves: slow the song down so the pitch drops, then add space. Pull the speed to around 0.75×–0.85×, turn up the Reverb knob for that deep, dreamy, syrupy wash, and download. Because the slowdown is real varispeed, it sounds like the classic edits — not the brittle pitch-locked version. Add a touch of the Filter for an extra muffled, underwater feel.
What people use it for
- Learning songs by ear & practising an instrument — slow a fast guitar solo, piano run or riff to half speed and play along; turn on Keep pitch to hold the original key.
- Transcribing music — slow tricky passages right down to write them out note for note.
- Singers & rappers — slow a track to catch every word, every flow and ad-lib.
- Bass boost & EQ — add free low end, scoop the mids or lift the air with the 10-band EQ.
- Slowed + reverb / chopped & screwed / vaporwave — the classic deep, syrupy slowed-down aesthetic, with one-knob reverb.
- Language learning — slow speech or lyrics to hear each syllable clearly.
- Dancers & choreographers — slow a routine's track to learn the moves before bringing it up to tempo.
- DJs & producers — true varispeed pitch-and-tempo for blends, edits and sampling.
Frequently asked questions
Does it download from YouTube for me?
No. Slow My Song slows down audio files you already have, right in your browser. Save the audio first, then drop it in — nothing is uploaded.
Can I slow it down without changing the pitch?
Yes — turn on Keep pitch in the Advanced / DJ Controls panel. Leave it off for the natural vinyl-style slowdown where the pitch drops with the tempo.
Is my file uploaded anywhere?
Never. Everything runs locally in your browser; your file never leaves your device.
Can I slow down a video?
Yes — drop in an MP4, MOV or WebM and the video plays back slowed in sync with the audio, pitch dropping naturally. The picture is slaved to the audio, so it stays locked even with bass boost, EQ and reverb on.
Can I download the slowed video?
Yes — load a video and a Download slowed video button appears. It saves the slowed video with the processed audio muxed in (slowdown or keep-pitch, plus any bass boost, EQ, reverb and filter). On most browsers you get a shareable MP4, built quickly with no quality loss; where that isn't supported it records a WebM instead (in real time, so a long clip at a slow speed takes a while — keep the tab open). Either way it's all done in your browser and nothing is uploaded.
What files can I use?
Audio: MP3 and WAV everywhere; M4A, FLAC and OGG wherever your browser can decode them. Video: MP4, MOV and WebM. If a file is rejected, re-saving or converting it to MP3 or WAV fixes it.