A4 = 442 Hz · orchestra pitch
442 Hz tuner.
Tune to A = 442 Hz, the pitch many orchestras use. Every note moves up about 8 cents from standard 440.
Tuner · Any tuning
Tune your guitar.
Pluck a string and the meter shows how far off it is. Tap any string to hear it at its true pitch and tune by ear.
- Pick any instrument and tuning
- Shift it down or up by half steps
- Set A to anything: 440, 432, 442…
E A D G B E · A = 442
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Keys: Space start or stop · ← → half step · ↑ ↓ A (Shift: bigger steps) · 1–9 string · M mode · R hear · − + volume · L copy link · Esc done
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E Standard
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Notes from C0 to C8. Type a note like D2, F♯3 or B♭1, or use − and +.
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Reference A
Slider 380–500 Hz. Type any value from 300 to 600 Hz.
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Sound
Violin, viola, cello and double bass start with Bowed, the rest with Acoustic.
Note length
Match a recording Beta
Find the A a song was recorded at, then tune to it and play along.
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Play the song, loud and clear.
Result
This recording sits on A 440
The tuner already matches it: nothing to change.
A recording is only known within a half step: if the song is a half step down, also change the tuning.
Beta: tested on real records and synthetic songs. Check the result by ear.
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Settings
Mode
Guided: one string at a time, from the thickest.
Meter
Bar: a slider with a mint in-tune zone.
Note length
How long a tapped string and Hear sound. Repeat plays the string again every few seconds, Continuous holds it: tap it again to stop.
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Octave numbers (E2, E4)
Tells the two E strings apart: E2 is the low one, E4 the high one.
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Each string's pitch in hertz, such as 82.4 Hz.
In tune within
Precise is not used with harmonics: Normal ±3 applies.
Harmonic mode
For one low string: play its 12th-fret harmonic (×2) or its 5th-fret one (×4).
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The pitch heard in Hz, tenths of a cent and the input picker. Turns on octave numbers and frequencies.
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+7.85 ¢ vs 440
What A = 442 changes
A4 = 442 Hz is +7.85 cents from 440. Every note moves by the same amount, so note names, chord shapes and tunings all stay the same; only the pitch moves. String tension changes by about +0.9% (approx.).
The tuner on this page starts at A = 442 for every instrument and tuning. Change it anytime with the A chip, and choose whether to keep 442 as your usual A4.
| String | Note | A = 440 | A = 442 |
|---|---|---|---|
| 6 | E2 | 82.41 | 82.78 |
| 5 | A2 | 110.00 | 110.50 |
| 4 | D3 | 146.83 | 147.50 |
| 3 | G3 | 196.00 | 196.89 |
| 2 | B3 | 246.94 | 248.06 |
| 1 | E4 | 329.63 | 331.13 |
History
Where this pitch comes from
Standard pitch is A4 = 440 Hz (ISO 16). Many orchestras tune a little higher for a brighter sound: 442 Hz is common in continental Europe and with many American orchestras, and some, for example in Germany and Austria, use 443.
Concert-hall pianos are tuned to match the orchestra, so a soloist who plays with a piano at 442 needs to tune to 442 too. For school and youth orchestras, ask the conductor which A they use.
The difference is small: 442 is 7.85 cents above 440. Alone you will hardly hear it, but in a section of strings or winds it shows up as a slow wobble.
A4 = 442 Hz
Every note at A = 442
| Note | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|---|
| C | 16.43 | 32.85 | 65.70 | 131.41 | 262.81 | 525.63 | 1051.26 | 2102.52 | 4205.04 |
| C♯ / D♭ | 17.40 | 34.81 | 69.61 | 139.22 | 278.44 | 556.89 | 1113.77 | 2227.54 | 4455.08 |
| D | 18.44 | 36.87 | 73.75 | 147.50 | 295.00 | 590.00 | 1180.00 | 2360.00 | 4719.99 |
| D♯ / E♭ | 19.53 | 39.07 | 78.14 | 156.27 | 312.54 | 625.08 | 1250.16 | 2500.33 | 5000.66 |
| E | 20.70 | 41.39 | 82.78 | 165.56 | 331.13 | 662.25 | 1324.50 | 2649.01 | 5298.01 |
| F | 21.93 | 43.85 | 87.70 | 175.41 | 350.82 | 701.63 | 1403.26 | 2806.53 | 5613.05 |
| F♯ / G♭ | 23.23 | 46.46 | 92.92 | 185.84 | 371.68 | 743.35 | 1486.70 | 2973.41 | 5946.82 |
| G | 24.61 | 49.22 | 98.44 | 196.89 | 393.78 | 787.55 | 1575.11 | 3150.22 | 6300.44 |
| G♯ / A♭ | 26.07 | 52.15 | 104.30 | 208.60 | 417.19 | 834.38 | 1668.77 | 3337.54 | 6675.08 |
| A | 27.63 | 55.25 | 110.50 | 221.00 | 442.00 | 884.00 | 1768.00 | 3536.00 | 7072.00 |
| A♯ / B♭ | 29.27 | 58.54 | 117.07 | 234.14 | 468.28 | 936.57 | 1873.13 | 3746.26 | 7492.52 |
| B | 31.01 | 62.02 | 124.03 | 248.06 | 496.13 | 992.26 | 1984.51 | 3969.03 | 7938.05 |
Questions
How do I tune to 442 Hz?
Use the tuner on this page: it is already set to A = 442. Pick your instrument, pluck each string and follow the meter: Low means tighten, High means loosen. For a guitar in standard tuning the targets are E2 82.78, A2 110.50, D3 147.50, G3 196.89, B3 248.06, E4 331.13 Hz.
Why do orchestras tune to 442?
Mostly for a slightly brighter, more brilliant sound, and by tradition. There is no single rule: 440, 442 and 443 are all in use.
Can I set 443 or 444 instead?
Yes. Tap the A chip and nudge it up 1 Hz at a time, or type the exact value. The tuner accepts anything from 300 to 600 Hz.