I learnt that there are a variety of elements to consider, including wattage and size; however, I'm still unsure about the wattage and what constitutes a suitable wattage for a microwave. A microwave with a wattage of 900 and higher is an excellent microwave in overall. Microwave power ranges from 650 to 2400 watts. The wattage has an influence on how long it would take for your food to cook up properly and if it is entirely cooked. Even if a microwave with 900 watts or more is considered decent.