How to tune a flute with a microphone
Start the microphone, then play one long tone and hold it without vibrato. The display settles on the nearest note and reports how far above or below it you are in cents. Set the headjoint before anything else: with the flute warmed up, play the tuning note your ensemble uses, then pull the headjoint out if the reading is sharp and push it in if it is flat. Move it in small increments and re-check, because a headjoint that is pulled too far makes the whole instrument flat rather than fixing one note.
A flute is a C instrument, so the written note is the sounding note
A flute does not transpose. When you finger and read a written C, the note that leaves the instrument is that same concert C. Reference charts for non-transposing instruments list the flute with the piano and the violin as having identical written and sounding pitch (Music Theory Practice, transposition chart). That is why this page has no transposition setting: the note name on screen is the note the room hears.
The rest of the woodwind and brass family is not like that. Clarinets in B♭ and tenor saxophones sound a major second below written pitch, alto saxophones a major sixth below, and horns in F a perfect fifth below. Within the flute family, the alto flute is the one that transposes — it is built in G and sounds a perfect fourth below written pitch — while the piccolo sounds an octave above. If you are holding a concert flute, read the screen exactly as written.
Which notes a concert flute plays
The standard concert flute has a practical range of C4 to C7, three octaves beginning on middle C, with low B3 available on flutes that carry a B footjoint (Dynamic Music Room, range of the flute). Other flutes in the family sit elsewhere: the piccolo runs D5 to C8, the alto flute G3 to G6, and the bass flute C3 to C6.
The top of the range is the part that moves. The highest notes depend on how the player shapes the airstream rather than on a fingering alone, so check them with a sustained tone instead of a single attempt. The bottom of the range is the opposite problem: low notes need a relaxed embouchure and a full, slow airstream, and they go flat quickly when either is missing.
Reading a flute pitch while the tone is still settling
A flute's pitch is set by the player, not by the instrument alone. The angle of the airstream across the embouchure hole, how much of the hole the lower lip covers, and the air speed all move the note, which means a reading can drift even when your fingers have not moved. Watch the cents figure rather than the note name: if it settles near zero and stays there, the note is stable, and if it keeps sliding, the airstream is still changing.
Room temperature matters as much as technique. A cold headjoint plays flat, so warm the instrument before trusting the display, and re-check after a long rest rather than assuming the tuning has held.
Flute tuner questions
These answers cover transposition, which notes to check, practising with a tuner, the reference pitch, and privacy.
Does this page transpose for the flute?
No, and it does not need to. A concert flute is a C instrument, so the note you read is the note that sounds, and the display shows that same note name.
Which notes should I check first?
Start with the tuning note your ensemble uses, usually A4, then check one low note, one middle note, and one high note. A flute's registers do not always sit together, so a single in-tune note does not prove the rest of the instrument is set.
Should I use the tuner while I practise?
Long tones are the useful case. Hold a note and watch whether the cents figure stays steady instead of wandering; that is easier to learn from than chasing a moving needle through a fast passage.
Can I change the reference pitch?
Yes. The A4 reference switches between 440, 441, 442, and 415 Hz, so the display can match an ensemble that tunes higher than standard or a baroque pitch.
Does the microphone audio leave my device?
No. Pitch detection runs in this browser and the audio is neither recorded nor uploaded.
Microphone audio is analyzed in this browser and is never uploaded or stored. Stop the microphone or leave the page to release the stream.