Great Dane Growth Chart Calculator. Starting at 4 months, your great dane will gain 3.13 pounds (1.42 kilograms) every week on average. At 5 months of age, your great dane will grow at a rate of 2.79 pounds per.

At 5 months of age, your great dane will grow at a rate of 2.79 pounds per. Starting at 4 months, your great dane will gain 3.13 pounds (1.42 kilograms) every week on average.