t’s important to keep your food at an optimal temperature—typically at or below 40 degrees Fahrenheit—to ensure food stays fresh and bacteria-free. And while many refrigerators do have built-in thermometers, experts suggest using an external one, too. “It’s advised to keep a thermometer in all refrigerators and freezers, placing it on the shelf at eye level right in the front,” says Ron Shimek, president of Mr. Appliance, a Neighborly company. “This way, every time the appliance is opened, you can quickly glance at the temperature and know everything is alright.” When looking for a fridge thermometer, consider how it attaches (magnetic, hanging, clip, or standing), the display type, and whether or not it’s waterproof.
Best Overall
ThermoWorks Fridge/Freezer Thermometer
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- Two sensors can be used simultaneously
- Audible alarms
- Magnetic attachment
- Easy-to-read display
- Relatively expensive
- Larger than some other models
We love that this fridge thermometer covers all of the bases—because it has two channels and two probes, it can be used simultaneously in both the refrigerator and the freezer. Simply insert one probe in the freezer and one in the fridge. You can also set high- and low-temperature limits so that the audible alarm will alert you to any changes—you don’t have to keep taking manual readings.
The thermometer also includes a convenient fold-out stand and magnetic rear-panel clips, so it’ll stay put wherever you place it. Plus, it has a very easy-to-read LCD to ensure you get the temperature readings just right.
Dimensions: 5.3 x 1.77 x 0.9 inches | Range: -40 to 158 degrees Fahrenheit | Power Source: AAA batteries | What’s Included: (2) AAA batteries, (2) suction cups
Best Budget
Rubbermaid Refrigerator/Freezer Thermometer
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- Doesn’t require batteries
- Exceptionally durable
- Shatter-proof screen
- Narrower temperature range
This fridge thermometer proves you don’t have to spend big bucks to get a reliable temperature gauge for your appliance. Sure, you won’t get extras like an LCD or magnet to hold it in place, but you’ll get exactly what you need: an accurate thermometer.
The small stainless steel thermometer reads between negative 20 and 80 degrees Fahrenheit—perfect for most traditional refrigerators, mini-fridges, freezers, and even coolers (great to ensure your barbecue fare stays within a safe range). It also has a shatter-proof screen, so you won’t have to worry if it accidentally tips over.
As a big bonus, this model doesn’t require any batteries, so your temperature readings will never lapse.
Dimensions: 1 x 1 x 0.03 inches | Range: -20 to 80 degrees Fahrenheit | Power Source: Mechanical thermometer
Best Easy to Read
VOULOIR Fridge Thermometer
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- Wide temperature range
- Simple to operate
- Affordable
- Requires batteries
The standout feature of this fridge thermometer is the 2.56-inch electronic LCD that’s a cinch to read, even from a distance. And that’s not all the screen will tell you—the information on the screen simultaneously displays the maximum and minimum temperatures of the day and the current temperature.
It’s easy to operate and toggle between modes, too. The thermometer has just three buttons (all on the back), so all you have to do is press on, off, or the button that shifts the mode from Celsius to Fahrenheit. Still, the unit has a wide temperature range that makes it perfectly suitable for the fridge and the freezer—the temperature spans from negative 4 to 122 degrees Fahrenheit.
Dimensions: 3.3 x 2.5 x 1 inches | Range: -4 to 122 degrees Fahrenheit | Power Source: LR44 battery | What’s Included: (1) LR44 battery
Best Multipurpose
AMIR Wireless Refrigerator Thermometer
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- Wireless sensors
- Easy-to-read display
- Both visual and audible alarms
- Requires batteries
This thermometer (which is a new-and-improved version) has two sensors that allow you to monitor both the refrigerator and the freezer wirelessly at the same time. Stick the sensors where you want them (you can hang them, too!), and keep an eye on the temperature via the separate—and very large and easy-to-read—LCD. The display unit can stand wherever you want it to, whether on the table, tucked on a shelf, hung on the wall, or with a magnet on the refrigerator.
The display records minimum and maximum temperatures, historical temperature readings, and the current temperature. If anything’s amiss, visual and audible alarms will alert you immediately to minimize the chance of food spoilage.
But one of the best things about this thermometer is that you can also use it outside the kitchen. Use it to monitor the temperature of any space—like a baby’s nursery or the garage.
Dimensions: 3.1 x 3.7 inches (main unit) | Range: 14 to 140 degrees Fahrenheit | Power Source: AAA batteries | What’s Included: (1) main unit, (2) transmitters, (1) user manual
Best Magnetic
Taylor Pro Series Digital Fridge/Freezer Thermometer
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- Multiple ways to install
- Easy-to-read digital face
- Magnetic backing for easy display
- No audible alarm
There’s a lot to love about a magnetic fridge thermometer: There’s no concern that your unit is going to tip over, making it harder to read. Plus, when you’re able to stick the unit onto the wall of your fridge, you conserve precious space. We love that this round device not only has that precious magnet but also has a clip and a stand should you want to stash the device in one of the more traditional ways.
No matter which way you choose to set up the thermometer, you’ll love how easy the display is to read. The temperature reading—a large digital number—is perfectly centered on the screen. But just in case there’s any confusion (maybe you don’t know exactly how cold the fridge or freezer should be), the device also displays a happy or sad face to indicate whether the temperature is in a safe zone or not.
Dimensions: 2.75 x 2.75 inches | Range: -40 to 176 degrees Fahrenheit | Power Source: Cr2032 battery | What’s Included: (1) Cr2032 battery
Best Set
AcuRite Refrigerator Thermometer
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- Wireless sensors
- Magnetic attachment
- Easy-to-read display
- Programmable alarms
- Expensive
If you have multiple appliances to monitor, try this refrigerator thermometer, which includes two sensors—one for the refrigerator and one for the freezer. The sensors are wireless, so you only need to place them inside the unit. You can put the standalone display anywhere you can easily spot it—on the counter or a shelf, perhaps—but it’s magnetic and has a keyhole for hanging, so you could also mount it straight onto the refrigerator or the wall.
The display is relatively large, too, so you can spot it from afar. Additionally, you can program alarms easily so that you’ll be notified when the temperature exceeds your desired maximum, reducing the chance that your food will spoil.
Dimensions: 1 x 5.8 x 2.4 inches (main unit) | Range: -40 to 100 degrees Fahrenheit | Power Source: AAA batteries | What’s Included: (1) main unit, (2) wireless sensors, (1) user manual
Best Compact
ThermoWorks ThermoDrop Zipper-Pull Thermometer
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- Backlit display
- Durable and waterproof
- Compact size
- Can only be hung, no other mounting options
When space is at a premium—maybe you’re monitoring the temperature of a mini-fridge or a cooler, or perhaps you have a very packed refrigerator—this is the thermometer for you. It’s just as accurate as our overall pick but a fraction of the size. It’s so tiny you can wrap your whole hand around it.
But despite its size, this thermometer provides just as much information as others. The auto-rotating display reads the current temperature, minimum, and maximum. And the big digits mean it’s incredibly easy to read the temperature from any angle.
The thermometer also has another very important added feature. It has an IP67 rating, meaning it’s water-resistant, plus it’s strong enough to withstand dust and drops (great for campers!). There are several color options to choose from, too.
Dimensions: 49 x 33 x 12.5 millimeters | Range: -13 to 122 degrees Fahrenheit | Power Source: CR2025 battery | What’s Included: (1) CR2025 battery, (1) split key ring
Final Verdict
The ThermoWorks Fridge/Freezer Thermometer is the best overall fridge thermometer because it’s a reliable and versatile option. The magnetic thermometer is highly accurate and can be used in both sections of your appliance—or even in a deep freezer. For a budget-friendly option, opt for the Rubbermaid Refrigerator/Freezer Thermometer.
What to Look for in a Fridge Thermometer
Attachment
Standalone thermometers may tip over, making it harder to read the thermometer. Look for options that are magnetic or feature hooks or clips. Some options feature multiple attachment options and are thus more versatile.
Display
Fridge thermometers come with analog and digital displays. Look for a thermometer with a large digital display for easy readings. Some thermometers offer LED displays or are backlit for easier reading.
Waterproof
For longevity, select a model that states explicitly that it’s waterproof. Similarly, an anti-fog display is another nice feature to have. Waterproof options are also ideal for outdoor coolers and camping, so consider how versatile you need this thermometer to be.
FAQs
How do you use a refrigerator thermometer?
To use a refrigerator thermometer properly, place it inside the fridge. If you want to monitor a particular area of the appliance more closely, like the meat drawer, place your thermometer as close to it as possible. Then, close the door and let it sit for a few hours before checking the temperature for the first time. For the most accurate picture of the true temperature, take your reading first thing in the morning since the appliance’s door will have been closed for hours at a time. (Frequently opening and closing the door can skew the temperature reading.)
How cold should you keep your refrigerator and freezer?
According to the FDA, you should keep the refrigerator temperature at—or below—40 degrees Fahrenheit. The freezer temperature should be 0 degrees.
What should I do if my refrigerator temperature is too high or too low?
If your refrigerator temperature doesn’t align with the ideal temperatures mentioned above, it’s crucial to take action promptly. If the temperature is too high, it might jeopardize food safety and lead to spoilage. In this case, consider adjusting the refrigerator’s temperature setting to a cooler one and ensure the door seals properly. Conversely, if the temperature is too low, it might waste energy and impact food quality. Adjust the refrigerator’s setting to a slightly warmer temperature, and ensure no obstruction in the vents or coils could impede proper cooling. Monitoring your refrigerator thermometer will help you store your food safely and efficiently.
Where’s the best place to put a refrigerator thermometer?
The best place to put a refrigerator thermometer is near the door, which is typically the warmest area of the fridge. But you can also target specific areas (like the meat drawer) by putting the thermometer there.
How long does it take for a refrigerator thermometer to work?
Though your refrigerator thermometer will begin to read temperature immediately, it’s best to wait a few hours before taking a read. For the greatest accuracy, read the thermometer first thing in the morning when the door has been closed for more than a few hours. This waiting period ensures the thermometer will provide an accurate and reliable measurement, crucial for monitoring food safety and maintaining optimal storage conditions.
How We Researched
To curate this list, we scoured top retailers to find the top-selling, top-rated refrigerator thermometers. Then, we interviewed experts like Ron Shimek, president of Mr. Appliance, a Neighborly company, to find out what types of thermometers are most accurate and learn more about the most essential features. With this information, we vetted each product being considered to ensure the final list of refrigerator thermometers contained only the most reliable, quality options on the market today.
