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The tempo with two identities. Trap and dubstep are written at 140 BPM but felt at 70, with the snare landing on beat three instead of on two and four, so the same track can honestly be called either.
Beats per minute
140
Press Space to start and stop · ↑ ↓ to nudge off 140 · or
The tempo
A beat every 0.43 seconds is genuinely fast, and techno and hard house play it that way. Trap and dubstep do not: they keep the hi-hats rolling at 140 while the kick and snare mark out a 70 BPM pulse underneath. This is the single most common source of BPM disagreements, and it is why a detector that answers 70 and a producer who says 140 can both be right.
Where you hear it
Counted in half time, this is the same music as 70 BPM: the click marks beats one and three instead of all four. If a part at 140 feels frantic, try the half-time click and play across it.
Wondering whether a particular track is 140 BPM? Tap along with it and compare, or let the MagicBPM app listen and tell you.
Practice note: If 140 feels frantic, set the metronome to 70 and treat every click as beat one and beat three. That is the half-time feel, and it is much easier to write to.
Presets
Every one opens the metronome already running at that BPM.
Need something in between? The full metronome covers 40 to 220 BPM.
MagicBPM for iPhone and Android
The app pairs the same metronome with a real-time BPM detector that hears the music around you, so you can lift a tempo off a track and practice to it straight away.
Good to know
Fast on paper, half-time in the ear: written at 140, usually felt at 70. A beat lands every 0.429 seconds, so one bar of 4/4 lasts 1.714 seconds and a three-minute song runs to about 105 bars. Press Play above to hear it.
140 BPM is fast when counted straight, in the middle of Allegro. Counted in half time it is a relaxed 70 BPM, which is how most trap and dubstep actually feels.
Trap and drill, written at 140 and counted at 70; Dubstep, where the half-time snare defines the genre; Techno and hard house, played straight at 140. The list is a guide rather than a rule: tempo varies within every genre.
Counted in half time, 140 BPM is 70 BPM, with the click marking beats one and three instead of every beat. Both readings describe the same music, which is why two people, or two apps, can give different answers for one song and both be right.
This page opens already set to 140 BPM, so press Play or hit the spacebar. To move off it, drag the slider, type a number into the BPM box, or use the arrow keys to nudge a beat at a time.
Measuring instead of setting? Use the tap tempo tool to find a song’s BPM.