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Key and BPM finder: what key is this song in?

Drop a song and get its musical key, its tempo in BPM, its Camelot code for harmonic mixing and the keys that mix with it. The analysis runs on your device, so even unreleased tracks stay private. No file? Tap along to the beat below.

Drop a song here

WAV, MP3, M4A, AAC, FLAC or OGG. Analysed on your device: nothing is uploaded.

How to read it

Outer ring: major keys (B). Inner ring: minor keys (A). Keys with the same number, or one step around the wheel, mix without clashing. Click a key, or drop a song above.

Tap tempo

– BPM

Tap along to the beat (or press any key while the button is focused). It keeps the last eight taps.

How the key and BPM finder works

Key: the finder builds a chromagram, how strongly each of the 12 notes sounds across the song, and matches it against major and minor key profiles. Because a minor key and its relative major share every note (A minor and C major), it then listens to the bass, which usually sits on the home note, to decide between them.
Tempo: it tracks where new sounds start (an onset envelope), finds the period that repeats most strongly and refines it across four beats. Many genres can be counted at half or double speed (140 or 70 for trap, 87 or 174 for drum and bass), so both readings are shown.
Camelot code: DJs number keys on the Camelot wheel. Keys with the same number, or one step either way, mix smoothly. The finder lists those neighbours for you.

BPM ranges by genre

Hip-hop / boom bap
Typical BPM
85–95
Common keys
Minor keys (A, C, F minor)
Trap
Typical BPM
130–150 (felt at half time)
Common keys
Minor keys, often F, C♯ or G minor
Pop
Typical BPM
100–125
Common keys
Major and minor, often C, G, A minor
Deep house / house
Typical BPM
118–125
Common keys
A minor, F minor, G minor
Tech house
Typical BPM
124–128
Common keys
Minor keys
Melodic techno
Typical BPM
120–125
Common keys
Minor keys, often A or F minor
Drum and bass
Typical BPM
170–175
Common keys
Minor keys
Afrobeats / amapiano
Typical BPM
100–115
Common keys
Major and minor

Genre	Typical BPM	Common keys
Hip-hop / boom bap	85–95	Minor keys (A, C, F minor)
Trap	130–150 (felt at half time)	Minor keys, often F, C♯ or G minor
Pop	100–125	Major and minor, often C, G, A minor
Deep house / house	118–125	A minor, F minor, G minor
Tech house	124–128	Minor keys
Melodic techno	120–125	Minor keys, often A or F minor
Drum and bass	170–175	Minor keys
Afrobeats / amapiano	100–115	Major and minor

What to do with the key once you know it

Write over a sample in the right key with our free chord progression generator, tune a vocal to it with online autotune, or set the key in Tune and Hook inside your DAW.

The plugin

Write over it

Hum two bars. Hook finds the key, harmonises your melody and writes chords, bass, a counter-melody and drums in your genre, played by Goldwire's own instruments.

Try it

Hook

New€59

Songwriting instrument

Hum a melody. Get the whole song.

People also ask

How do I find the key of a song?

Drop the song into the key finder above. It measures how strongly each note sounds across the track, compares that with major and minor key profiles and checks the bass to tell relative keys apart. You can also find it by ear: hum the note that feels like home and match it on a keyboard.

How do I find the BPM of a song?

Drop the file into the finder and it detects the tempo from where beats and notes start, showing half- and double-time readings too. Without a file, tap along to the beat on the Tap button: after a few taps it shows the BPM.

Is the key and BPM finder accurate?

On songs with a steady beat and clear harmony it's right most of the time. Songs that change key, have no drums, or sit between a minor key and its relative major are harder, so the finder shows a confidence level and the relative key alongside the result.

Are my songs uploaded?

No. The file is decoded and analysed in your browser, on your device. Nothing is sent to a server, so unreleased tracks stay private.

What is the Camelot wheel?

A DJ system that numbers the 24 keys from 1 to 12 with A for minor and B for major. Keys with the same number, or a number one step away, mix without clashing, so 8A (A minor) blends with 7A, 9A and 8B (C major).

How the key and BPM finder works

Key: the finder builds a chromagram, how strongly each of the 12 notes sounds across the song, and matches it against major and minor key profiles. Because a minor key and its relative major share every note (A minor and C major), it then listens to the bass, which usually sits on the home note, to decide between them.

Tempo: it tracks where new sounds start (an onset envelope), finds the period that repeats most strongly and refines it across four beats. Many genres can be counted at half or double speed (140 or 70 for trap, 87 or 174 for drum and bass), so both readings are shown.

Camelot code: DJs number keys on the Camelot wheel. Keys with the same number, or one step either way, mix smoothly. The finder lists those neighbours for you.

BPM ranges by genre

Hip-hop / boom bap
Typical BPM
85–95
Common keys
Minor keys (A, C, F minor)
Trap
Typical BPM
130–150 (felt at half time)
Common keys
Minor keys, often F, C♯ or G minor
Pop
Typical BPM
100–125
Common keys
Major and minor, often C, G, A minor
Deep house / house
Typical BPM
118–125
Common keys
A minor, F minor, G minor
Tech house
Typical BPM
124–128
Common keys
Minor keys
Melodic techno
Typical BPM
120–125
Common keys
Minor keys, often A or F minor
Drum and bass
Typical BPM
170–175
Common keys
Minor keys
Afrobeats / amapiano
Typical BPM
100–115
Common keys
Major and minor

Genre	Typical BPM	Common keys
Hip-hop / boom bap	85–95	Minor keys (A, C, F minor)
Trap	130–150 (felt at half time)	Minor keys, often F, C♯ or G minor
Pop	100–125	Major and minor, often C, G, A minor
Deep house / house	118–125	A minor, F minor, G minor
Tech house	124–128	Minor keys
Melodic techno	120–125	Minor keys, often A or F minor
Drum and bass	170–175	Minor keys
Afrobeats / amapiano	100–115	Major and minor