Mantha - from london, united kingdom
One centimeter (cm) equals 2.54 cm. For your pans, whether round or square, 22 cm = 8.6 inches, 24 cm = 9.5 inches, 26 = 10.24 inches and 28 = 11 inches. To determine how much batter you need, and how long to bake the cakes, check out our list here on the Bake Decorate Celebrate site. You'll need to adjust both for the slight difference in size, but not by much. Just make sure your pans are 1/2 to 2/3 full (unless the recipe says otherwise) and check your cakes about 5 minutes before our list tells you it should be done, so that you don't overbake your cakes.