Home & Electrical

Microwave Wattage Converter: Adjust Cooking Time for Your Microwave

Free tool · Updated October 3, 2026 · By CouponTalk

Your result

Enter your measurements to see your result.

Quick answer

Cooking time scales with power: your time = recipe time × recipe watts ÷ your watts. If a pack says 3 minutes at 1,000 W and your microwave is 800 W, cook for about 3 minutes 45 seconds. A 1,200 W microwave would need about 2 minutes 30 seconds. Stir halfway and check the food is steaming hot all the way through.

How to use this calculator

Enter the time on the recipe or pack.
Enter the wattage it was written for.
Enter your microwave's wattage from the label inside the door.

Time for a 3-minute (1,000 W) recipe

For a recipe of 3 minutes at 1,000 W
Your microwave	Time
600 W	5 min 0 s
700 W	4 min 17 s
800 W	3 min 45 s
900 W	3 min 20 s
1000 W	3 min 0 s
1200 W	2 min 30 s

Times are estimates; food safety comes first.

Frequently asked questions

Where do I find my microwave's wattage?

On the label inside the door or on the back, and in the manual (output power).

Is the power level the same as wattage?

No. Power levels are a percentage of full wattage; 50% on an 800 W microwave is about 400 W.

Why is my food still cold in the middle?

Stir halfway, use a lid and let it stand for a minute to spread the heat.

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