Microwave Size Chart. Microwave wattage is equivalent to power, with higher wattages cooking food faster and more evenly. Typical over the range microwave under 30” kitchen cabinet might have an actual width 29 1/2”, 29 3/4”, 29 7/8”, 29 15/16” or precise 30”.

Microwave ovens are helpful in cooking a wide range of recipes and food items including popcorn, chicken grills, kebabs, pizza, muffins, even reheat the frozen food. External variations can vary from 10x18x14 (25x46x36 cm) on the smaller side, to 14x24x20 (36x61x51 cm) on the larger side. Wattage is the measure of energy in a given direction.