Question: If you lived for 100 years, how long would your hair be, if you never cut it of course?

Urslaan Chohan answered on 22 Jun 2018:

The hair grows about 15cm per year, on average. So over 100 years, it’d grow 1500 cm, or 1.5 km! Of course, the hair doesn’t continue to grow endlessly – it falls out and new hair grows in its place. So in reality, you’d probably have 1-2 metres long hair by the end. That’s if you’re not bald, of course. This is completely determined by genetics too – the record is 5.6 metres!