G4 — 391.995 Hz

G4 (G4) is 391.995 Hz in standard equal temperament at A=440 Hz. It is MIDI note number 67.

G4 Frequency in All Tuning Systems

Temperament Frequency (Hz) Cents from Equal Common Usage
Equal Temperament 391.995 Hz 0.00 Modern standard; piano, fretted instruments
Pythagorean 391.111 Hz -3.91 Medieval/early music; string ensemble open fifths
Just Intonation (Major) 392.438 Hz +1.96 A cappella vocal, barbershop, Renaissance
Just Intonation (Minor) 392.438 Hz +1.96 Minor-key vocal music, string ensembles
Quarter-Comma Meantone 393.550 Hz +6.85 Renaissance keyboard, early Baroque organ
Third-Comma Meantone 394.216 Hz +9.78 Renaissance vocal music in minor keys
Sixth-Comma Meantone 393.104 Hz +4.89 Baroque orchestral ensemble compromise
Werckmeister III 393.770 Hz +7.82 Baroque keyboard; Bach contemporaries
Werckmeister IV 392.439 Hz +1.96 Baroque keyboard, strong key contrast
Werckmeister V 393.770 Hz +7.82 Specialized Baroque keyboard
Kirnberger III 393.550 Hz +6.85 Classical-era keyboard, keys near C major
Vallotti 392.882 Hz +3.91 Baroque/Classical orchestral tuning
Young (1799) 393.327 Hz +5.87 Classical-era keyboard
Bach/Lehman 392.882 Hz +3.91 Bach keyboard works, Well-Tempered Clavier
Neidhardt 392.439 Hz +1.96 18th century keyboard, near-equal alternative
Kellner (Bach) 393.415 Hz +6.26 Bach keyboard reconstruction

Positive cents = sharper than equal temperament. Negative cents = flatter. 100 cents = 1 semitone.

G4 at Different Concert Pitches

The same note varies in frequency depending on the concert pitch standard used by your ensemble.

Concert Pitch Frequency (Hz) Common Usage
A = 440 Hz (ISO standard) 391.995 Hz US, UK, and most modern ensembles worldwide
A = 442 Hz 393.777 Hz Many European orchestras; France, Germany
A = 443 Hz 394.668 Hz Berlin Philharmonic; some US orchestras
A = 432 Hz 384.868 Hz Alternative tuning; Baroque revival
A = 415 Hz (Baroque) 369.723 Hz Historically-informed Baroque performance

f = f_at_A440 × (concert_pitch / 440)

Instruments That Play G4

G4 (391.995 Hz) falls within the comfortable playing range of 49 instruments.

Acoustic Guitar Alto (Contralto) Alto Flute Alto Saxophone Banjo (5-string) Banjo (Tenor, 4-string) Baritone Bass Clarinet Bass Flute Bass Guitar (4-string) Bass Trombone Bassoon Cello Chimes (Tubular Bells) Clarinet in A Clarinet in Bb Classical Guitar Cornet Double Bass Electric Bass (5-string) Electric Guitar English Horn Euphonium Flugelhorn Flute French Horn in F Harp (Pedal) Mandolin Marimba Mezzo-Soprano Oboe Oboe d'Amore Recorder (Alto) Recorder (Bass) Recorder (Tenor) Soprano Soprano Saxophone Tenor Timpani Trombone (Tenor) Trumpet in Bb Trumpet in C Ukulele (Baritone) Ukulele (Concert) Ukulele (Soprano) Ukulele (Tenor) Vibraphone Viola Violin

G4 Across All Tuning Systems

Explore how G4 is tuned in each historical temperament system. Each tuning system gives G4 a slightly different frequency, affecting the harmonic character of chords and melodies.

Equal Temperament Pythagorean Tuning Just Intonation (Major) Just Intonation (Minor) Quarter-Comma Meantone Third-Comma Meantone Sixth-Comma Meantone Werckmeister III Werckmeister IV Werckmeister V Kirnberger III Vallotti Young (1799) Bach/Lehman Neidhardt Kellner (Bach)

Tune G4 with precision — Get Tunable.

Tunable supports 15+ tuning systems including equal temperament, Pythagorean, just intonation, and historical well-temperaments. See exact Hz values in real-time as you play.

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