Tap Tempo Calculator

How to Use This Calculator

1. While listening to a song, count the number of beats you hear during a set time window.
2. Enter that Beats Counted and Sample Duration in seconds.
3. The calculator shows your BPM, the nearest common BPM, and the beat interval in milliseconds.
4. Use the DJ Tempo Match tab to calculate the pitch shift needed to mix two tracks.

Formula

Example

Frequently Asked Questions

• How do I find the BPM of a song? ▼
  Count the beats for exactly 15 seconds while the song plays, then multiply by 4. Or count for 30 seconds and multiply by 2. This calculator automates that math — just enter beats and duration.
• What is a "common" BPM? ▼
  Common BPMs are round numbers or industry-standard tempos that music producers and DJs use: 60, 80, 90, 100, 120, 124, 128, 130, 140, 160, 170, 174. Songs are often mastered at these exact tempos.
• What does tempo drift mean? ▼
  Tempo drift is when a performer slightly speeds up or slows down over time. Live drummers naturally drift 1–3 BPM. A drift over 5% is noticeable. Studio recordings are typically locked to a click track with zero drift.
• How do DJs match tempo between two tracks? ▼
  DJs use pitch/tempo controls (called pitch faders) to match BPM. The pitch shift percentage = ((Target BPM − Source BPM) / Source BPM) × 100. A 2 BPM difference at 128 BPM requires about a 1.56% pitch adjustment.

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