10 inch cake is about 25 cm in diameter, and 12 inch cake is about 30 cm in diameter. The comparison chart is as follows, the upper layer is 10 inch, and the lower layer is 12 inch:

The diameter of 10 inch cake is 10 inch, and one inch is 2.54 cm, so the diameter of 10 inch cake is 25.4 cm. As for how many people eat it, it depends on the individual. Generally, 10 inch cake is suitable for 1 1- 15 people. 12 inch is 29.4 cm in diameter, which is about enough for 8 to 15 people. In the size of the cake, inch refers to inch.

Comparison of cake size and diameter

6-inch cake with a diameter of 15 cm.

8 inches is about 20 centimeters.

10 inch is about 25 cm.

12 inch is about 30 cm.

14 inch is about 35 cm.

16 inch is about 40 cm.

18 inch is about 45 cm.

20 inches is about 50 centimeters.