Microwave ovens have become a staple in many households, but how do they work? Invented by accident in 1939 by Percy Spencer while working on radar tubes, microwaves are the result of an electromagnet that converts electricity into radio waves. These waves reflect off the walls of the oven and turntable, then reach your food. Microwaves heat food from the inside, causing molecules to vibrate and produce friction that cooks it.
Microwaves are safe to use and far more efficient than other cooking methods. They also kill most bacteria and other pathogens, making them a good choice for defrosting meat or vegetables. However, food can sometimes be cooked unevenly in the microwave. This makes it important to cut your food into even pieces, which allows for more consistent heating. Also, be careful with liquids that are heated in the microwave because they could erupt out of the container and burn you.
Some people worry that microwaves cause cancer, but there’s no evidence that they do. In fact, they’re actually safer than traditional ovens because they don’t emit harmful gases like carbon monoxide and nitrous oxide. Microwaves are also easy to clean, because they don’t make the utensils inside the oven hot and the food doesn’t stick to them. But, there are some things you should never microwave – like baby formula or other hot liquids, which can explode out of the container and burn you. In addition, it is not a good idea to heat plastic containers because they may release harmful chemicals like bisphenol A and phthalates.
GE GCST10A1WSS 1.0 Cu Ft Convection Microwave Oven, 1050W Countertop Air Fry Microwave with Broil & Crisper Pan, Compact Stainless Steel Design
$199.99 (as of January 14, 2026 19:13 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
TOSHIBA ML-EM45PIT(SS) Countertop Microwave Oven with Inverter Technology, Kitchen Essentials, Smart Sensor, Auto Defrost, 1.6 Cu.ft, 13.6" Removable Turntable, 33lb.&1250W, Stainless Steel
$179.91 (as of January 14, 2026 19:13 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Emerson MW7302B Compact Countertop Microwave Oven with Touch Control, LED Display, 700W, 10 Power Levels, 6 Auto Menus, Glass Turntable and Child Safe Lock, 0.7 Cu., Ft. Black
$69.49 (as of January 14, 2026 19:13 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Toshiba Air Fryer Combo 4-in-1 Countertop Microwave Oven, Smart Sensor, Convection, Mute Function, Position Memory 13.6" Turntable, 1.5 Cu Ft, 1000W, Black, ML-EC42P(BS)
$229.99 (as of January 14, 2026 19:13 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
COMMERCIAL CHEF 0.7 Cubic Foot Microwave with 10 Power Levels, Small Microwave with Push Button, 700W Countertop up to 99 Minute Timer and Digital Display, Stainless Steel
$70.76 (as of January 14, 2026 19:13 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Nostalgia Retro Compact Countertop Microwave Oven, 0.7 Cu. Ft. 700-Watts with LED Digital Display, Child Lock, Easy Clean Interior, Black
$89.99 (as of January 14, 2026 19:13 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
TOSHIBA ML-EM45P(BS) Countertop Microwave Oven with Smart Sensor and 13.6" Removable Position Memory Turntable, Sound On/Off Function, 1200W, 1.6 Cu.ft, Black Stainless Steel
$172.99 (as of January 14, 2026 19:13 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
FRIGIDAIRE EMW788RETRO 0.7 cu. ft. Retro Microwave, Black-Gold
$74.98 (as of January 14, 2026 19:13 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Nostalgia Retro Microwave Oven - 0.7 Cu Ft, 700-Watt Countertop Size with Glass Turntable, Child Safety Lock, 8 Auto-Cook Programs, Digital Clock - Pink
$89.99 (as of January 14, 2026 19:13 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)