Brian Padilla from Hilo Guitars demonstrates how to tune a ukulele without a tuner. To tune a ukulele without a tuner, first pluck the G string and compare it to the seventh fret of the C string and match the pitch. On the same C string drop down to the fourth fret and match the E string to it. Go to the fifth fret on the E string and match the A string to it. Make adjustments as necessary. If your tuner runs out of batteries or you're stranded in an area without electricity, use the fret matching method to keep your ukulele tuned.