The thing is, weight apportions itself to different parts of the body for each individual, so 2 people could be same height, weigh the same, and have completely diff physiques;.
A 'healthy' weight can be calculated by BMI tests, but, this pretty much excludes athletes, TorrentTurboTaxGogoanime as muscle is denser then fat, therefore you could be classed as overweight due to being hench.
Dunno atm however been 64-70kg (10-11st) for the vast majority of my grown-up life, yet then my mum's family are for the most part tall lean'os and I play a great deal of game/hurl wellbeing probs so just about zero muscle versus fat