Kitchen Utility Tool

Microwave Time Converter

Instantly adjust cooking times between any microwave wattage

watts
→
watts
Enter the recipe's cooking time
:
⚠ Please enter a time greater than zero.
⚠ Your wattages are the same — no conversion needed!
✓ Adjusted Time
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⚠ All microwaves are different. Cooking times may vary depending on your model, the food being heated, and other factors. Always check your food and adjust as needed.

How Does Microwave Wattage Affect Cooking Time?

Microwave wattage determines how quickly your microwave heats food. A higher-wattage microwave cooks faster, while a lower-wattage model needs more time to achieve the same result. Most recipes are written for a 1000W or 1200W microwave, so if you own a 700W or 800W model, you'll often need to add extra cooking time.

The conversion is straightforward: cooking time scales inversely with wattage. A 700W microwave needs roughly 71% more time than a 1200W model to heat food to the same temperature. This tool handles that calculation instantly for any combination between 600W and 1200W.

Common microwave wattages include 600W, 700W, 800W, 900W, 1000W, 1100W, and 1200W. Not sure what yours is? Check the label inside your microwave door or on the back panel.