Standard guitar tuning
From the thickest to the thinnest string, tune to E2 – A2 – D3 – G3 – B3 – E4. Approach the target pitch gradually and finish by tuning upward when possible, which helps reduce slack around the tuning post.
Accurate tuning
Allow microphone access, play one string at a time and let the note settle before adjusting the tuning key. Mute the other strings with your picking hand so sympathetic vibration does not confuse the pitch reading.
From the thickest to the thinnest string, tune to E2 – A2 – D3 – G3 – B3 – E4. Approach the target pitch gradually and finish by tuning upward when possible, which helps reduce slack around the tuning post.
The tuner measures the repeating frequency of the sound and compares it with the nearest musical note. A stable, clean attack gives a more reliable result than a very hard pick, heavy distortion or background noise.
Use the neck pickup, lower the room noise, play near the middle of the string and check the tuning again after all six strings are adjusted. New strings may need several passes while they stretch.
Keep A, D, G, B and high E unchanged, then lower the sixth string from E2 to D2. Follow the exact steps in How to Tune a Guitar to Drop D.
After tuning, open the online metronome for timing practice or read the complete online guitar tuning guide.