① Look Up the Notes of a Chord
202 types can be searched by their information on any root note. It also shows the main related scales and substitute chords based on Negative Harmony theory.
⑦ Calculate Note Values
This app calculates note values. Just enter a BPM to see the durations of 18 kinds of notes at a glance.
The display can be switched between seconds, milliseconds, microseconds, sec, ms, and μs.
It can also calculate the length of a song from the number of bars.
* If you need the duration of a note type not listed here, please use ⑧ Metric Modulation.
[Basic Operation]
Enter the BPM you want to look up, and the calculation is performed.
[Display Format]
The note value display format can be chosen from 6 options: [seconds, milliseconds, microseconds, sec, ms, μs].
Selecting one from the dropdown list switches the display to that format.
If a result has more than 3 decimal places, the displayed value is rounded to 3 decimal places.
[Click a Value to Copy]
Click a note image or a note value text to copy the current value (number only) to the clipboard.
The copied value is truncated to 10 decimal places.
[Calculate Song Length from Bar Count]
Specify a time signature and a number of bars to calculate the length of a song at the given BPM.
[Accuracy of Information]
The information provided here may not be accurate.
Of course, we take the greatest care in publishing information and materials.
However, we cannot guarantee the accuracy of the published content.
If you find any incorrect information, we would appreciate it if you could let us know via the contact form.
[Disclaimer]
We accept no responsibility whatsoever, for any reason, for any damage arising in connection with the use or download of the information and materials published on this site.
Nothing in particular.
◆ How to Understand Any Rhythm — A Mathematical Theory of Rhythm — (Japanese)
An article covering how to think about rhythm and how to calculate note values.
◆ Metric Modulation Explained (Japanese)
An article explaining metric modulation.
Nothing in particular.
Calculate Song Length from Bar Count
[Main Updates to the Music Theory Web Apps]
Loading...
Find a tool for your music
Every tool (web app) is completely free to use.
② Look Up the Notes of a Scale
Look up the details of 77 types in every key. It also shows the main related chords.
③ Reverse Lookup for Chord/Scale Names
Search the chord and scale names that match the notes you select.
The MIDI-keyboard version is here.
④ Chord Progression Collection
A collection of 100+ chord progressions (effectively 1,000+ with all 12 keys supported).
They can also be displayed as degree (Roman numeral) names.
⑤ Diatonic Chord Chart
A list of diatonic chords. Switch between all 12 keys and check the tensions and modal scales for each chord.
⑥ Explore Modulation Intervals & Related Keys
A tool for exploring the relationships between keys. You can choose from 77 types as well as modes.
⑦ Calculate Note Values
Calculates the values of 18 note types based on a given BPM. Each can be displayed in seconds, milliseconds, or microseconds.
⑧ Metric Modulation
Easily calculate the BPM at which two different notes share the same duration.
⑨ Transpose a Chord Progression
Transpose chord progression text into all 12 keys. It can also convert to degree (Roman numeral) names.
⑩ Visualize a String Instrument Fretboard
See the fretboard positions of chords and scales on a guitar. It also supports bass, multi-string instruments, and a left-handed display.
⑪ Reverse Lookup for Chord/Scale Names from the Fretboard
Reverse-search the chord and scale names that match the notes you select on the fretboard.
┗ Reverse Lookup with MIDI Keyboard
Identify chords and scales from the notes you play on a MIDI keyboard.
Metronome (Odd Meters)External site · opens in a new tab ↗
A metronome that can play a wide variety of meters. Since you enter meters as text, everything from 4/4 to complex odd meters is easy to set up and check!
Metronome (Polyrhythms)External site · opens in a new tab ↗
A metronome that supports polyrhythms. Understand polyrhythms through both sound and visuals. You can set values from 1 to 32.
Drum Rhythm Pattern TrainerExternal site · opens in a new tab ↗
Read and play rhythms for your right hand, left hand, right foot, and left foot. Change one part at a time to practice coordination on the drums.
Piano Scales & FingeringExternal site · opens in a new tab ↗
Check piano scales and finger numbers in a fingering chart for your scale practice.