For my crochet dishcloths, I’ve used 150g of Pure Cotton Fine (50g = 170m/1.76oz = 185 yards) and a 2.5mm hook.

The final dimensions for:
The Almond crochet dishcloth: 24 cm x 21.5 cm (9.5 inches x 8.5 inches);
The Alpine crochet dishcloth: 23.5 cm x 24 cm (9.5 inches x 9.5 inches);
The Waffle crochet dishcloth: 23 cm x 22 cm (9 inches x 8.7 inches).