How to Tune a Cello Online
Cello is tuned CGDA: same intervals as viola but an octave lower. The C2 string vibrates at just 65.41 Hz, low enough that some laptop and built-in mics struggle to detect it clearly. For best results, use a close mic or plug an electric cello directly into an audio interface.
Tune A first using the 220 Hz reference, then work down: D3, G2, C2. Each string is a perfect fifth below the previous.
Cello String Tension and Bow Technique
Cello strings are under significant tension: each contributes roughly 15-20 kg of pull on the bridge. Small peg movements produce big pitch changes. Use fine tuners at the tailpiece for everyday adjustments.
Bow steadily across the string while tuning. Short, rough bows produce inconsistent pitch that confuses the tuner. A 4-5 second sustained bow gives the cleanest reading.
Pegs vs Fine Tuners on Cello
Most modern cellos have fine tuners on all four strings (especially the steel A and D). Use the pegs for restringing or large changes; use fine tuners for daily tuning.
Older cellos may only have a fine tuner on the A string. If you find yourself frequently re-tuning with the peg, consider adding fine tuners: a luthier can install them in 30 minutes.
Common Cello Tuning Problems
Wolf note: cellos frequently have a wolf tone around F#-G on the G string and D-Eb on the C string. Wolf eliminators (small rubber-and-brass weights on the string after the bridge) reduce or eliminate this.
New strings sound bright and unstable: they need 24-48 hours of playing to settle. Modern cello strings (Larsen, Spirocore, Pirastro Evah Pirazzi) last 6-9 months for daily players.
Tuning the Cello for Orchestra and Solo Play
Orchestral cellists tune to the oboe's A and listen to neighbours for unison. Solo players can use any reference but should match the piano if accompanied.
For recording, tune slightly more carefully than orchestral pitch: recording reveals tuning imperfections that live performance hides. Use this tuner with a close mic for precision.