The short version
- Drop in a song, press Preview, pick a preset. Every slider works live while it plays.
- Classic nightcore is about 125% speed (+3.9 semitones). A TikTok “sped up” edit is usually 115–130%.
- Speeding up raises the pitch, like a record on the wrong speed. That brighter, chipmunk-adjacent vocal is the whole point.
- Download a WAV when it sounds right. The tool stops it clipping.
- Your song never leaves your device. No upload, no account, no watermark.
- Only post what you have the rights to. A sped-up version of someone else’s song is still their song.
How to make a sped-up or nightcore song
- Drop an audio file onto the box or press “Choose a file”. No song handy? Press “Try the demo loop”.
- Press Preview (or the space bar). Click the waveform to jump to the chorus, because that’s where the TikTok clip will be anyway.
- Pick a preset. Nightcore is the classic. Sped up (TikTok) is dry and punchy. Chipmunk is a cry for help.
- Fine-tune while it plays. Speed sets how fast and how high. Reverb adds a bit of shine. Bass boost puts back the weight you lose when everything goes up in pitch.
- Press “Download WAV”. It renders in a few seconds and is named “your song (sped up).wav”.
Add a little bass back. Speeding a song up lifts the kick and bass too, so it can sound thin on phone speakers. One to three dB of bass boost fixes most of it. If the vocal starts sounding like a cartoon, ease the speed back towards 1.15×.
Best sped-up and nightcore settings
There’s no official setting (nightcore has no governing body, thankfully), but these are the ones people actually use. Each one is a preset above.
| Style | Speed | Reverb | Sounds like |
|---|---|---|---|
| A little faster | 1.08× | 0% | The original with more energy; most people won’t clock it |
| Sped up (TikTok) | 1.20× | 0% | Bright, punchy, made for 15-second clips |
| Sped up + reverb | 1.20× | 35% | Upbeat but floaty, a happy cousin of slowed + reverb |
| Nightcore | 1.25× | 12% | The classic: high vocals, fast drums, pure energy |
| Hyperpop | 1.35× | 18% | Sugary, chaotic, heavy on the bass |
| Chipmunk | 1.50× | 0% | A full fifth higher. Exactly what it says |
Why does speeding up a song make it higher?
Because this is the vinyl method: the audio is played back faster, so every sound wave gets shorter, and shorter waves mean higher notes. Speed and pitch move together, exactly like a 33 rpm record played at 45 (which is about 1.35×, by the way, and roughly where hyperpop lives). That brighter, lighter vocal is what makes nightcore sound like nightcore. Tools that keep the original pitch sound cleaner, but they lose the sparkle.
| Speed | Pitch change | A 3:00 song becomes |
|---|---|---|
| 1.10× | +1.7 semitones | 2:44 |
| 1.20× | +3.2 semitones | 2:30 |
| 1.25× | +3.9 semitones | 2:24 |
| 1.30× | +4.5 semitones | 2:18 |
| 1.50× | +7.0 semitones (a fifth) | 2:00 |
What is nightcore, anyway?
Nightcore is a remix style where a song is sped up by roughly 20–30% so the pitch rises with it. It started in the early 2000s with a Norwegian DJ duo called Nightcore, who sped up trance tracks, and it exploded on YouTube with an anime picture on every single upload. Today “sped up” songs are everywhere on TikTok and Reels, and some artists even release official sped-up versions alongside the original. If slowed + reverb is 3 a.m. in the rain, nightcore is 4 p.m. after three energy drinks.
Speeding a song up doesn’t make it yours. A nightcore version of a commercial track is still that artist’s recording, and platforms can claim it, mute it or take it down. Use this freely on your own music, your own Suno songs (check your plan), or tracks that are licensed for remixing. Not legal advice, just friendly advice.
Sped-up versions of your Suno songs
Here’s the trick I use: make the song in Suno, then make a sped-up version for TikTok and Shorts. It’s a second release from the same track, and it often catches people the original didn’t. Put the speed in the title (“sped up, 1.2×”) so nobody thinks your singer has inhaled helium.
You can also ask Suno for something already bright and fast, then push it further here. A starting style:
Nightcore, high-energy J-pop, 160 BPM, bright supersaw synths, punchy four-on-the-floor drums, bouncy bass, sweet high female vocals, euphoric, playful, anime opening vibe
Want the opposite mood? The slowed + reverb maker uses the same engine in reverse. Releasing it? Check the loudness with the LUFS meter and see the new tempo and key in the BPM & key finder.
Why I built this
I'm a guitarist: a Cort, a lot of enthusiasm, roughly twelve notes. I built the slowed + reverb maker first, and the very first message I got was “cool, now do the opposite”. Fair. Some songs want to be sadder; some want to sprint.
It runs on the same engine, so it has the same promise: your browser does the work in a few seconds, with no upload, no queue, no signup and no watermark. I added the Chipmunk preset purely for my own amusement. I regret nothing.
How it works, and what it does with your file
Your browser decodes the file with the Web Audio API and plays it faster, which raises the pitch by the same amount. It goes through a gentle bass shelf and an optional high-cut, then splits into a dry path and a convolution reverb built from a synthetic room. When you download, the exact same chain is rendered in an offline audio context, checked for clipping, and saved as a 16-bit WAV.
Nothing is uploaded, there’s no account, and the page makes no network requests while it works. Close the tab and it’s gone.
Sped up and nightcore FAQ
What is a sped-up song?
A remix where a song is played faster, usually 115–130% speed, so the pitch goes up too. It sounds brighter and more energetic, and sped-up versions are hugely popular on TikTok and Reels.
What is the difference between sped up and nightcore?
They use the same trick. Nightcore usually means about 125% speed with an energetic, high vocal and often a little reverb, while “sped up” is a looser TikTok term for anything from about 110% to 130%.
What speed is nightcore?
Most nightcore is between 1.2× and 1.3× speed, which raises the pitch by about 3 to 4.5 semitones. The Nightcore preset here uses 1.25×.
Why does speeding up a song raise the pitch?
This tool works like a record player at the wrong speed: playing the audio faster shortens every sound wave, so everything gets shorter and higher at the same time. 1.25× speed is about 3.9 semitones higher.
Does this upload my song anywhere?
No. The file is decoded and processed in your browser, and the WAV is created on your device. Nothing is uploaded and there is no account.
What file formats can I use?
MP3 and WAV work in every browser. M4A, AAC, FLAC and OGG work in most. The download is a 16-bit WAV, which you can upload to TikTok, YouTube or a distributor, or convert to MP3.
Can I post sped-up songs on TikTok or YouTube?
Only if you have the rights. Speeding up someone else’s song doesn’t make it yours, and it can still be claimed or muted. It’s safest with your own music, your own Suno songs on a paid plan, or tracks licensed for remixing.
Can I speed up a song without changing the pitch?
Not on this page: here speed and pitch move together on purpose, because that is the nightcore sound. Keeping the pitch while changing the tempo needs time-stretching, which is what the tempo changer does.
Can I slow a song down instead?
Yes, with the slowed + reverb maker. It uses the same engine, from 50% to 100% speed, with presets for the dreamy late-night sound.
Make the song first, then speed it up
The free Paddy Prompt Studio builds Suno style prompts and Vidmuse video scripts. Pick a genre, mood and vocal and it writes the style line for you.
Open the Prompt Studio →