Tools
Microwave time converter전자레인지 시간 계산
Korean packs give microwave times for a set power, usually 700 W or 1000 W. If your microwave is stronger or weaker, the time changes. Enter what the pack says and your microwave’s wattage.
What the pack says
Your microwave
Heat it for about
1 min 16 sec
2 min × 700 W ÷ 1100 W — shorter, because your microwave is stronger
An estimate. Check that the food is hot all the way through.
How the conversion works
A microwave’s wattage is its power. To heat food the same amount at a different power, keep watts × time the same: your time = pack time × pack watts ÷ your watts.[1][2] So a stronger microwave needs less time, and a weaker one needs more.[3][4]
- Treat the result as an estimate: how cold the food is and your microwave’s quirks change how hot it gets.[1] One guide suggests setting a little more than the calculated time, to avoid uneven heating.[2]
- Follow the pack’s covering and stirring steps, stir or turn the food halfway if you can, and let it stand for a few minutes after heating.[3][4][5]
- The outside can get hot while the middle stays cold. Check the food in several places, and use a food thermometer to make sure.[3][4][2]
- Your microwave’s wattage can be found inside the door, on the serial number plate on the back, or in the manual.[3][4]
Common conversions
Our arithmetic from the rule above, rounded to the nearest second. A highlighted cell is the same power as the pack, so the time stays the same.
| Pack says | Your 800 W | Your 900 W | Your 1000 W | Your 1100 W | Your 1200 W |
|---|---|---|---|---|---|
| 1 min at 700 W | 52 sec | 47 sec | 42 sec | 38 sec | 35 sec |
| 1 min 30 sec at 700 W | 1 min 19 sec | 1 min 10 sec | 1 min 3 sec | 57 sec | 52 sec |
| 2 min at 700 W | 1 min 45 sec | 1 min 33 sec | 1 min 24 sec | 1 min 16 sec | 1 min 10 sec |
| 3 min at 700 W | 2 min 38 sec | 2 min 20 sec | 2 min 6 sec | 1 min 55 sec | 1 min 45 sec |
| 1 min at 1000 W | 1 min 15 sec | 1 min 7 sec | 1 min | 55 sec | 50 sec |
| 1 min 30 sec at 1000 W | 1 min 52 sec | 1 min 40 sec | 1 min 30 sec | 1 min 22 sec | 1 min 15 sec |
| 2 min at 1000 W | 2 min 30 sec | 2 min 13 sec | 2 min | 1 min 49 sec | 1 min 40 sec |
| 3 min at 1000 W | 3 min 45 sec | 3 min 20 sec | 3 min | 2 min 44 sec | 2 min 30 sec |
Sources
- Panasonic (Japan, in Japanese): microwave wattage and how to work out heating times
- All About (Japan, in Japanese): converting microwave times between wattages
- USDA: Read and follow package cooking instructions
- Harrison County Health Department, Indiana: Cook It Safe (PDF)
- University of Nebraska–Lincoln Extension: Microwave safety
Checked October 25, 2026.