A universal pattern that you can use to make your own calculations or crochet to size.

Independent calculations do not depend on my density or yarn, you calculate according to your measurements, but according to my formulas and my example.

By size:
XS - S: chest measurement 84 - 100 cm;
M - L: chest measurement 100 - 110 cm;
XL - XXL: chest measurement 110 -122 cm;
XXXL: chest measurement 117 - 130 cm.

Recommendations for choosing yarn:
The yarn should be 500 - 650 metres per 100 g, if you want to get into my density, if you do the calculation yourself, then any yarn of your choice.
The hook number is from 1 to 2 mm.
The original yarn is Vivchari Ethno-cotton (600m/100g) and a 1.25mm hook.

My consumption for size L is 270g.
Separately by colour: blue - 170g, milk - 100g.
The length of the T-shirt on the back is 55 cm, width - 52 cm (folded).