Music Intervals

All standard intervals from unison to octave, with quality, half steps, and examples starting from C.

Perfect & Major/Minor Intervals
NameAbbrQualityHalf StepsExample (from C)Consonance
UnisonP1Perfect0C → CPerfect
Minor 2ndm2Minor1C → D♭Dissonant
Major 2ndM2Major2C → DDissonant
Minor 3rdm3Minor3C → E♭Imperfect
Major 3rdM3Major4C → EImperfect
Perfect 4thP4Perfect5C → FPerfect
TritoneTTDim/Aug6C → F♯/G♭Dissonant
Perfect 5thP5Perfect7C → GPerfect
Minor 6thm6Minor8C → A♭Imperfect
Major 6thM6Major9C → AImperfect
Minor 7thm7Minor10C → B♭Dissonant
Major 7thM7Major11C → BDissonant
OctaveP8Perfect12C → C'Perfect
Compound Intervals (beyond the octave)
NameAbbrAlso CalledHalf StepsExample (from C)
Minor 9thm9Minor 2nd + octave13C → D♭'
Major 9thM9Major 2nd + octave14C → D'
Minor 10thm10Minor 3rd + octave15C → E♭'
Major 10thM10Major 3rd + octave16C → E'
Perfect 11thP11Perfect 4th + octave17C → F'
Perfect 12thP12Perfect 5th + octave19C → G'
Major 13thM13Major 6th + octave21C → A'
About this tool

Music Intervals

Reference chart for all musical intervals with names, abbreviations, half steps, and examples. Includes unison through two octaves. Free music theory tool.

Music Intervals is a free browser-based tool from South Fork Apps. There's nothing to install, no account to create, and no usage limit. Open the page, do the work, and move on.

How it works

  1. Open Music Intervals in any modern browser on desktop or mobile.
  2. Enter or paste your input into the tool's main field.
  3. Adjust any options shown on the page to match what you need.
  4. Copy or download the result and continue with your work.

Why use a browser tool

Browser tools beat installable apps when the job is small. You don't have to manage updates, sign in, or wait for a heavy program to load. Music Intervals runs entirely in your browser. Your input never leaves your device, no analytics watch what you type, and the page stops working the moment you close the tab.

Privacy and data

South Fork Apps tools process everything client-side in JavaScript. No server sees your data. Nothing is stored, logged, or sent anywhere. If you're working with sensitive content, you can verify by opening the page once, disconnecting from the internet, and watching Music Intervals keep working.

Music Intervals interface preview
Screenshot of the live Music Intervals interface.