Bass guitar tuning is straightforward once you know the process. This guide covers standard 4-string tuning (EADG), Drop D, and 5-string tuning using the free online tuner at guitartuner.dev. The steps are simple whether you are a complete beginner or just need a quick reference.
Standard bass tuning: EADG
Standard bass tuning uses four strings: E, A, D, and G. These are the same note names as the four lowest strings of a standard guitar, but played one full octave lower. The low E string on a bass is E1 at 41.20 Hz, compared to E2 (82.41 Hz) on guitar. This octave difference is what gives the bass its deep, foundational character in a band mix.
How to tune a bass guitar step by step
- Select Bass from the instrument menu at guitartuner.dev. The tuner will switch to bass frequency ranges and display EADG string targets.
- Play the low E string (thickest string). Tune to E1 (41.20 Hz). The tuner detects the note automatically.
- Play the A string. Tune to A1 (55 Hz).
- Play the D string. Tune to D2 (73.42 Hz).
- Play the G string (thinnest). Tune to G2 (98 Hz).
- Do a second pass. Check the low E again after tuning all strings. Tension changes from tuning higher strings cause the lower strings to shift slightly.
Standard bass tuning reference
| String | Note | Octave | Frequency |
|---|---|---|---|
| 4 (lowest) | E | 1 | 41.20 Hz |
| 3 | A | 1 | 55.00 Hz |
| 2 | D | 2 | 73.42 Hz |
| 1 (highest) | G | 2 | 98.00 Hz |
5-string bass tuning
A 5-string bass adds a low B string below the standard E. This extends the range downward significantly, opening up bass lines that would be impossible on a 4-string without retuning. The low B0 string sits at 30.87 Hz — one of the lowest frequencies regularly reproduced by musical instruments. Select Bass → 5 String in the tuner to use this configuration. Tune in an especially quiet environment for the B string, as its low frequency requires a clear signal to detect accurately.
Drop D bass tuning
Drop D lowers the E string by a whole tone to D1 (36.71 Hz), giving you D A D G. This is the most common alternate bass tuning and is widely used in rock and metal. The lowered string creates a heavier, darker root note on the bottom string without requiring any other changes. Select Bass → Drop D in the tuner to target this configuration.
Tips for tuning bass with a microphone tuner
Bass strings produce very low frequencies. A few adjustments help the tuner detect them accurately:
- Tune in a quiet room. Low frequencies are easily masked by ambient noise. Even air conditioning or traffic noise can interfere with detection on the lowest strings.
- Play the string firmly near the body. A confident pluck gives the tuner a strong fundamental frequency. Light touches tend to emphasise harmonics, which confuse the detector.
- Let the note fully develop before reading. Bass strings have a slower attack than guitar strings. Give the note a moment to stabilise before adjusting the peg.
- Try through a practice amp at low volume. Running a small amount of volume through an amp produces a louder, cleaner signal that the microphone can detect more easily.
Frequently asked questions
What is standard bass tuning?
E A D G, also written EADG. These are the same note names as the four lowest guitar strings, but one octave lower. The low E is at E1 (41.20 Hz) on bass versus E2 (82.41 Hz) on guitar.
Can I use this tuner for a 5-string bass?
Yes. Select Bass → 5 String from the tuning menu. The tuner supports the low B0 string at 30.87 Hz. Tune that string in a very quiet environment for the most accurate reading.
What is Drop D bass tuning?
The E string is lowered to D1 (36.71 Hz). This gives you D A D G — a common configuration in rock and metal that adds a heavy, dark quality to the lowest string.
Why is my bass hard to tune with a microphone?
Bass frequencies are very low and require a clear, loud signal to detect reliably. Pluck the string firmly, tune in a quiet environment, and consider tuning through a practice amp at low volume for the best results.
Is bass guitar in the same tuning as guitar?
Same note names (E, A, D, G) but one octave lower. Guitar's low E is E2 at approximately 82 Hz; bass low E is E1 at approximately 41 Hz. This octave difference is what separates the bass register from the guitar register in a band.