[Free tools](https://tokchart.com/tools)For artists BPM and Key Finder ================== Upload a song or record it with your microphone to find its tempo (BPM) and musical key. Your audio is analysed on your device and never uploaded. 20 free runs a day. We email you a code once, then you're set for 30 days. Result ------ Example Blinding Lights – The Weeknd 171 BPM · F minor Half time 86, double time 342. Or possibly G# major. Keys that mix well with it How it works ------------ 1. 01 ### Add your audio Choose an MP3, WAV, M4A or other audio file, or record a few seconds of a song playing near your microphone. 2. 02 ### Run the analysis Press Find BPM and key. The first time, we'll send a 6-digit code to your email so we know you're a person. 3. 03 ### Get the tempo and key See the BPM, the key and whether it's major or minor, plus the related keys that mix well with it. Questions --------- How do I find the BPM of a song? Upload the song or record it playing near your microphone, then press Find BPM and key. The tool listens for the beat and counts how many beats happen per minute. Is my audio uploaded anywhere? No. The file is decoded and analysed inside your browser. We only keep the result (the BPM and key) and a fingerprint of the file so the same file gets an instant answer next time. What audio files can I use? Anything your browser can play: usually MP3, WAV, M4A/AAC, OGG and FLAC. We analyse up to the first two minutes, which is plenty to find the tempo and key. Why does the BPM show as half or double what I expected? Tempo can be counted at different levels: a 140 BPM track can feel like 70 BPM. We pick the most likely value between 70 and 180 BPM and also show the half and double tempo. How accurate is the key detection? It compares the notes in your audio with the typical note pattern of each of the 24 major and minor keys. It works best on songs with clear chords; songs that change key or have heavy drums can confuse it, so we also show the second most likely key. Why do DJs and producers need the BPM and key? Songs with a similar tempo and a compatible key blend smoothly in a mix or mashup, and knowing the BPM helps you time edits and TikTok videos to the beat. See what's taking off on TikTok every day ----------------------------------------- Tokchart follows TikTok audios, songs and creators: what's growing, where, and who's using it. More free tools --------------- [All 14 free tools](https://tokchart.com/tools) - [ TikTok Song Finder Paste a TikTok video link to find the sound it uses and the song behind it. ](https://tokchart.com/tools/tiktok-song-finder) - [ Song Genre Finder Search for a song or paste a TikTok link to see its genres, worked out by listening to the audio. ](https://tokchart.com/tools/song-genre-finder) - [ MP3 Cutter & Ringtone Maker Cut a song or sound to the part you want, add a fade, and save it as an MP3 or ringtone. Your audio stays on your device. ](https://tokchart.com/tools/mp3-cutter) - [ Pitch & Key Changer Change a song's key without changing its speed, or make sped up, nightcore and slowed + reverb versions. Your audio stays on your device. ](https://tokchart.com/tools/pitch-changer)