Music Theory Calculator
Calculate intervals, build chords and scales, analyze tempo, and identify notes from frequencies.
Music Theory Tools
Key of C
No sharps or flats
Frequency Analysis
440 Hz = A4
Interval: C to G
Perfect 5th
7 semitones | Ratio: 3:2
🎵Semitones
7
🎶Beat Duration
0.500s
Chords from C
Major:C - E - G
Minor:C - D# - G
Dim:C - D# - F#
Dom7:C - E - G - A#
Scales from C
Major: C - D - E - F - G - A - B
Minor: C - D - D# - F - G - G# - A#
Note Durations at 120 BPM
Whole
2.000s
Half
1.000s
Quarter
0.500s
Eighth
0.250s
16th
0.125s
Measure
2.000s
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.