Ukulele
The ukulele's short scale length and nylon strings create unique intonation challenges. Re-entrant tuning (high G) affects how chords voice and how pitch is perceived.
Notes mapped
22
Brands cataloged
14
Models
52
References
7
Common Pitch Tendencies
- Short scale length amplifies fretting pressure effects
- Nylon strings stretch significantly when new
- Re-entrant tuning (high G4) requires mental adjustment
- Barré chords go sharp easily due to short scale
- Inexpensive ukuleles often have poor fret placement
- Humidity significantly affects wood and tuning stability
- Higher frets prone to sharpness on shorter scales
- Soprano more affected than concert/tenor due to shorter scale
🌡️ Temperature & Warm-up
Ukuleles are very sensitive to humidity changes. Solid wood ukuleles especially need 45–55% humidity. Nylon strings need 24–48 hours to stabilize after restringing.
Register Guide
Low Register
Low position (frets 0–3): Most stable playing area. Still requires very light touch due to short scale. New players typically press too hard.
Middle Register
Mid position (frets 4–7): Intonation starts to deviate on cheaper instruments. If chords sound "off" here even with gentle pressure, the ukulele may need better setup or may have manufacturing fret placement issues.
High Register
Upper position (frets 8–12): Only reliable on well-built concert and tenor ukuleles. Soprano ukuleles struggle with accuracy above the 7th fret. Very gentle pressure essential.
Harmonics
Harmonics at 12th fret work on ukulele — use them to check intonation. If fretted 12th is noticeably sharper than the harmonic, the saddle needs adjustment.
Note-by-Note Tendencies
| Note | Fingering / Position | Tendency | Adjustment |
|---|---|---|---|
| C4 | C string: open | 0 | Open C string. Tune carefully — nylon strings stretch when new. Allow 24–48 hours for new strings to stabilize. |
| C#4 | C string: fret 1 | ±3 | Very light pressure. Short scale amplifies finger pressure effects more than any other fretted instrument. |
| D4 | C string: fret 2 | ±3 | Light touch essential. Pressing even slightly too hard will push sharp on ukulele. |
| Eb4 | C string: fret 3 | +3 | Finger just behind the fret wire. Minimal pressure — let the fret do the work. |
| E4 | E string: open | 0 | Open E string. Cross-check with C string fret 4 for intonation accuracy. |
| F4 | E string: fret 1 | ±4 | Fret 1 on any string is most sensitive to pressure. Use absolute minimum force. |
| F#4 | E string: fret 2 | ±3 | Light pressure. Compare with C string fret 6 if available to verify pitch. |
| G4 | G string: open | 0 | Open G string (re-entrant — pitched above C4). This is the highest-pitched open string. |
| G#4 | G string: fret 1 | ±4 | Re-entrant G string is thinner gauge — even more pressure-sensitive than C string. |
| A4 | A string: open | 0 | Open A string. Reference pitch A440 — use tuner to verify before playing. |
| Bb4 | A string: fret 1 | ±5 | Fret 1 on A string. Very gentle pressure — short scale magnifies every ounce of force. |
| B4 | A string: fret 2 | +3 | Light touch. Also available as E string fret 7 — compare positions to find best intonation. |
| C5 | A string: fret 3 | +3 | One octave above open C string. Use the harmonic at C string fret 12 to check pitch. |
| C#5 | A string: fret 4 | +4 | Mid-position — intonation compensation matters more here. Verify with tuner. |
| D5 | A string: fret 5 | +5 | Approaching mid-position sharpness zone. Lighten finger pressure and check with tuner. |
| Eb5 | A string: fret 6 | +5 | Mid-position. Cheap ukuleles start losing accuracy here — if always sharp, check setup. |
| E5 | A string: fret 7 | +6 | Soprano ukuleles lose reliability above fret 7. Concert/tenor more accurate here. |
| F5 | E string: fret 8 | +7 | Upper position — only reliable on well-built concert and tenor ukuleles. |
| F#5 | E string: fret 9 | +8 | Upper frets go increasingly sharp. Lightest possible touch and check every note. |
| G5 | E string: fret 10 | +9 | High position. If consistently sharp even with light pressure, saddle may need compensation. |
| G#5 | E string: fret 11 | +10 | Approaching the practical limit for soprano ukuleles. Concert/tenor recommended. |
| A5 | E string: fret 12 | +10 to +12 | Fret 12 — check harmonic vs fretted note. If fretted is noticeably sharper, saddle needs adjustment. |
🔧 Equipment & Setup
🎻 Strings
- Nylon (standard): warm tone, significant stretch when new — retune constantly for first 2 days
- Fluorocarbon (Worth, Fremont): brighter, less stretch, better intonation stability
- Wound low G: needed for low-G tuning — check that nut slot is wide enough
- String tension affects intonation: higher tension = slightly sharper at frets
- Aquila Nylgut: popular hybrid — good pitch stability, bright tone
- Change strings every 1–3 months depending on play frequency
🔧 Instrument
- Soprano (13" scale): most portable, most intonation challenges above 5th fret
- Concert (15" scale): better intonation than soprano, good compromise
- Tenor (17" scale): best intonation of standard sizes, most fret access
- Baritone (19" scale): guitar-like tuning (DGBE), best intonation accuracy
- Nut and saddle: bone or TUSQ improve sustain and pitch accuracy over plastic
- Fret quality: cheap ukuleles often have poorly placed frets — buy the best you can afford
- Action: should be low but buzz-free. Too high = pressing sharp at every fret
💡 Practice Tips
- Use extremely light finger pressure — the #1 ukulele intonation mistake is pressing too hard
- Let new strings stretch for 48 hours before judging intonation
- Check intonation at 12th fret harmonic vs fretted
- Humidity control: keep ukulele at 45–55% relative humidity
- If upper frets are always sharp, consider a longer-scale ukulele (concert/tenor)
- Fluorocarbon strings offer better pitch stability than traditional nylon
- Tune before every piece — ukulele strings detune 5–10¢ in 5–10 minutes of playing, far faster than guitars
- Barré chords: just enough pressure to ring all strings — extra pressure sharpens by 10¢+ across the chord on a short scale
Common Brands & Models
Brands cataloged in Virtuosic for ukulele (used by the app to filter shared tendency data by manufacturer).
Kala
KA-15S Soprano Mahogany · KA-15C Concert Mahogany · KA-15T Tenor Mahogany · +8 more
Kamaka
HF-1 Standard Soprano · HF-2 Concert · HF-3 Tenor · +2 more
Kanile'a
K1-T Tenor · K1-C Concert · K2-T Tenor · +1 more
KoAloha
KCM-00 Concert Standard · KTM-00 Tenor Standard · KBM-00 Baritone · +1 more
Pono
MHC Concert Mahogany · MHT Tenor Mahogany · Koa Tenor · +1 more
Córdoba
15CM Concert · 20CM Concert · 22T Tenor · +2 more
Lanikai
LU-21 Standard Soprano · LU-21C Concert · LU-21T Tenor · +1 more
Martin
S1 Soprano · C1K Concert Koa · T1K Tenor Koa · +1 more
Oscar Schmidt
OU2 Concert · OU5 Concert Flame Maple
Fender
Zuma Concert · Grace VanderWaal Signature
Flight
NUT1S Travel Soprano · Travel Tenor
Kiwaya
ELS-1 Soprano · EKS-2 Koa Soprano
Mainland
Classic Mahogany Concert · Mango Tenor
Other
Custom/Other
Ensemble Intonation
Ji Deltas Instrument
- major-third
- perfect-fifth
- minor-third
Section Role
- Guitar is a FRETTED ET instrument — pure-interval adjustments require microtonal bending or capo offsets
- In an ensemble, guitar TYPICALLY adopts the ET pitch center; other instruments adjust to the guitar
- Acoustic guitar + violin / fiddle: violin will sit ~+2¢ above guitar on perfect 5ths — accept the conflict or have violin compromise
- Drop tunings (D, C, Open G, DADGAD): change the resonant pitches; the open strings naturally re-tune
Genre Pitch Center
- Pop / rock: A=440 standard
- Acoustic folk: A=440; capo work makes pitch center context-dependent
- Jazz: A=440
- Classical guitar: A=440 reference; gut/nylon strings have more pitch drift than steel
- Detuned styles (drop D, drop C): pitch reference is the lowest open string, not A
Overrides
- Ukulele is fretted ET; pitch center mirrors guitar approach
- Reentrant tuning (high G on soprano/concert): pitch is non-monotonic — bottom string is HIGHER than 3rd and 4th strings
- Linear tuning (low G): more bass-friendly; pitch perception matches guitar convention
- Hawaiian style + bands: ukulele often sits on top of guitar; tune your G string carefully — it's the most-played and most pitch-sensitive
Setup & Saddle Compensation
- Saddle compensation on uke: critical due to short scale length — small saddle offsets cause large intonation shifts
- Nylon vs fluorocarbon strings: nylon stretches more after install; fluorocarbon is more pitch-stable but brighter
- Soprano scale (13–14") vs concert (15") vs tenor (17") vs baritone (19"): shorter scale = more setup sensitivity
- Action height: low action = easier playing, less pressure-induced sharpness; high action = bigger tone, sharp fretted notes
- Tuning stability: fresh nylon strings need 24–48 hours to stabilize; re-tune frequently in the first week
📚 References
Tendencies and adjustments are drawn from established acoustic-research and pedagogy literature for this instrument family. Specific cent values vary by individual instrument, player, and conditions.
- Beloff, J. (1997). The Ukulele: A Visual History.
- Tranquada, J., & King, J. (2012). The 'Ukulele: A History.
- Buzz Feiten Tuning System literature (compensated nut principles).
- Manufacturer documentation (Kamaka / Kanile'a) on string and intonation setup.
- Beloff, J. (1997). The Ukulele: A Visual History. Backbeat.
- Yamaha Music Foundation (2010). Ukulele Method. (Setup and tuning chapter.)
- Lichty, J. (2005). Building the Ukulele. Stewart-MacDonald.
See your own intonation profile
Virtuosic Premium overlays your per-note pitch deltas on these instrument averages, so you can see exactly where you differ from the typical ukulele player — and how warmup shifts each note.