All microwaves are different, but the median 1,000-watt microwave requires at least 1500W of power to run properly. To make sure you end up with the right inverter, let ’ s take a look at how to determine what size inverter you need to run a microwave. It ’ second flying, easy, and it ’ ll ensure you don ’ t waste your money .

## Determining What Size Inverter You Need to Run a Microwave

At some period, many of us who enjoy off-grid support have asked, “ What size inverter do I need to run a microwave ? ”

fortunately, it ’ sulfur fabulously easy to figure out what size and power sine wave inverter you need to run a microwave. naturally, you ’ ll begin by taking a look at the microwave itself.

### Figure Out the Microwave’s Continuous Wattage Rating

The foremost thing you ’ ll need to figure out is how many watts the microwave uses while running, which is normally equally easy as finding where it ’ second noted. This can be on :

- The inside of the microwave door
- The serial number tag on the back
- The user manual
- The manufacturer’s website

If you ’ re ineffective to find it after looking in all of these places, you can get a pretty good idea using the USDA recommended method acting – “ Time-to-Boil Test. ” hera ’ s how to do it :

- You will need to put 240ml of water in a 2-cup glass measuring cup.
- Add ice cubes and stir until the water is cold.
- Remove the ice cubes.
- If the water is more than one cup, pour the excess.
- Put the container inside the microwave
- Set the microwave to high for at least four minutes
- Monitor the water and check if it boils

If the body of water boils in less than two minutes, you have a 1000 watt microwave. If it took around 3-4 minutes for the water to boil, you have a behind oven. ( 1 ) .

If the water boils in 3 minutes = median electrical power oven ( 650 – 700 watts or more )

now you should have a pretty commodity estimate of your microwave ’ s continuous electrical power denounce. note that, this refers to the ‘ cooking power ’ of the microwave ( as we explain below ). Hence, there are other factors to keep in mind when answering the motion “ What size inverter do I need to run a microwave ? ”

### Power Consumption Versus Cooking Power

When choosing an inverter, your microwave ’ s actual exponent consumption is what matters, and not the cooking power .

It ’ south crucial to note that a microwave ’ second cook electrical power is lower than the electrical power it consumes, so take that into report when choosing an inverter size. This is often referred to as ‘ Input Wattage ’ ( for actual baron pulmonary tuberculosis ), and ‘ Output Wattage ’ ( for cooking power ) .

A microwave ’ second cook electrical power is lower than the electrical power it consumes .

Most microwaves use department of energy with about 60-70 % efficiency ( 2 ). thus if you ’ re ineffective to find your microwave ’ s actual ability consumption noted anywhere, you can use some bare mathematics to figure it out .

Let ’ s assume a work efficiency of 65 % for your microwave ( on average ) .

Say you have a microwave that cooks at 700w. Let its actual world power consumption be X.

X * 65/100 = 700W

X = 700 * 100/65

X = 1076 ~ 1100W

That means your actual power consumption is around 1100W .

You can apply this proficiency to about any microwave and estimate the actual power consumption, if you already know your cooking might .

here ’ s a simple mesa that shows input signal might vanadium output exponent of common microwaves with 65 % efficiency ( 3 ) :

Input Power (Power Consumption) |
Output Power (Cooking Power) |

1100 W | 700 W |

1350 W | 900 W |

1700 W | 1100 W |

interestingly, flush though they require more power to run than they use to cook food, microwaves are inactive one of the more energy-efficient cook methods, making them ideal for off-grid be. scientific american states in a late article ( 4 ) :

Cooking or re-heating small portions of food in the microwave can save arsenic much as 80 percentage of the department of energy used to cook or warm them up in the oven .

That said, your microwave ’ second actual world power consumption is what you need to worry about when choosing a sine wave inverter size, not the cooking baron .

### Conversion Formula

If you ’ re not able to determine your microwave ’ south electrical power but know how many AMPS ( stream ) it uses, there ’ s an easy conversion formula that will help you figure it out .

merely multiply the amperes by AC voltage, which is generally 110-120V for US citizens. The product is your electrical power .

so if your microwave uses 12.5A of current, the formula would be : 12.5A * 120V = 1500W

### Factor In the Microwave’s Peak Wattage

now that you know everything there is to know about determining your microwave ’ sulfur continuous exponent usage, which is the might it consumes while running, it ’ south clock to take a look at its point electrical power or the maximum amount of baron it utilizes during a scend .

Peak electrical power, or billow electrical power, normally occurs during inauguration and lasts for less than a second, but your inverter needs to be able to handle this sudden billow in ability. The procedure should look something like this :

Your microwave ’ south extremum energy requirements should be listed on the owner ’ s manual or manufacturer ’ mho web site. If not, it ’ s a good theme to choose an inverter that can handle three to four times its continuous electrical power precisely to be on the safe side .

As a reference point, the tide ability of a microwave can be american samoa much as FOUR times the listed continuous ability ( so a 1000W microwave may have a extremum rate of 4000W ) .

ultimately, when you ’ rhenium looking for sine wave inverters, you ’ ll notice on the spectacles tabloid that both continuous and peak capability are listed, so it should be easy to tell if it ’ second large enough. To be on the dependable side, you should have an inverter with a higher continuous/peak power denounce than that of your microwave ( by a factor of about 20 % ) .

## The Bottom Line: How To Pick The Correct Inverter For Your Microwave (In 4 Easy Steps)

sol, if all that was a bit excessively much for you to wrap your head around, don ’ triiodothyronine concern. We ’ ve wrapped it up in a few, childlike steps :

- Find out the actual input power consumption (both continuous and peak rating) of the microwave from the inside label, user manual, or manufacturer’s website.
- If you can’t find that, then find out the cooking power. You may estimate it using the ‘Time-to-Boil‘ test.
- Once you have cooking power, you can use this guide to estimate the power consumption.
- Choose a sine wave inverter that fulfills both the ‘continuous watt’ rating and the ‘peak power’ rating. Preferably, go for a slightly higher-rated model to ensure smooth performance.

We recommend getting a full pure sine wave inverter for this aim, as it ’ ll maximize the power efficiency of your microwave, keep it running smoothly, and prevent any electric malfunctions from occurring. For more tips to get the most out of your home plate ’ mho appliances, check out our home page .

## FAQs

### Will a 1500-Watt Inverter Run a 700-Watt Microwave?

Yes, a 1500-watt baron inverter should be able to run a 700-watt microwave without any issues. To be certain, check that the soar power military rank of the microwave is besides within the inverter ’ south limits. You can use a arrant sine wave inverter or modified sine wave inverter, but the limited sine whole may cause your microwave to run less efficiently .

### What Kind of Inverter Do I Need to Run a Microwave?

You can use a modified sine wave inverter or a arrant sine wave inverter to run a microwave, ampere hanker as they have a bombastic enough capacitance, aka battery power. When you compare pure sine inverters vs modified sine inverters, modified sine models tend to shorten appliances ’ lives, so that ’ s important to keep in take care. Pure sine wave inverters constantly offer better performance and efficiency, albeit at a higher cost .

### Is my Inverter Big Enough to Run my Microwave?

Your inverter is big adequate to run your microwave if it can handle its inauguration tide, and continuous electrical power draw while it ’ randomness cook. If your modified sine wave inverter or pure sine wave inverter can handle both successfully, you ’ re all fix for your adjacent road trip !

To help all this sink in, you can check out this guide that shows how to size an inverter to run a television receiver for a like example .

**References**

- How Do You Determine the Wattage of Your Microwave Oven ? Retrieved from : hypertext transfer protocol : //ask.usda.gov/s/article/how-do-you-determine-the-wattage-of-your-microwave-oven
- Physics of the microwave oven. Retrieved from : hypertext transfer protocol : //clas.sa.ucsb.edu/docs/default-source/tutor-resources-files/physics_of_microwave_oven.pdf ? sfvrsn=17582bfb_2
- Microwave Wattage Input or Output – Which One Matters ?. Retrieved from : hypertext transfer protocol : //kitchengearoid.com/microwave-oven/microwave-wattage-input-or-output/

- Stove versus Microwave : Which Uses Less Energy to Make Tea ? Retrieved from : hypertext transfer protocol : //www.scientificamerican.com/article/stove-versus-microwave-energy-use/