Microwave wattage calculator

Convert cooking times by microwave wattage.

Package instructions often assume a specific microwave power, usually 1000W or 1100W. This calculator estimates the adjusted time for your microwave so a 700W, 800W, 900W, 1000W, or 1200W oven can follow the same starting point more accurately.

Original cooking time

Adjusted cooking time

0:00

Enter a wattage pair and cooking time to calculate the estimate.

Designed for common package instructions

Use it for frozen meals, leftovers, mug recipes, snacks, and reheating directions that list a microwave wattage different from yours.

API-first PHP foundation

The calculator calls /api/convert.php, so the same conversion logic can power mobile apps, embedded widgets, or partner tools later.

Built for content and ads

The public side includes useful guide pages, conversion charts, privacy pages, and responsive ad placements that can be activated after approval.

Popular charts

Common microwave wattage conversions

These chart pages give quick reference tables and internal links for users who want the answer without filling out the calculator every time.

Learn more

Helpful microwave cooking guides

How the conversion works

Learn the formula, why wattage changes cooking time, and why the result should be treated as an estimate.

Read the guide

Find your microwave wattage

Use the door label, owner manual, product plate, or model search to identify the wattage of your microwave.

Read the guide

Safe microwave cooking

Understand stirring, standing time, cold spots, hot spots, and when a thermometer matters.

Read the guide

Internal cooking temperatures

Use a quick chart for poultry, leftovers, ground meat, seafood, eggs, casseroles, and more.

View the chart