The 7 Best Thermometers of 2024

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Many sports practices, such as those for football, cross country, soccer and field hockey, are held outdoors, sometimes in extremely hot and humid weather. In these conditions, athletes are at risk of heat fatigue and cramps—a risk compounded by the equipment and clothes required for these sports. Heat-related ailments are often preventable, according to the American Academy of Pediatrics Committee on Sports Medicine.

Thermometers are helpful tools for athletes, trainers and other health and fitness enthusiasts to track the temperature of athletes. They’re also a must-have for parents, grandparents and households with children. Today's medical thermometers are faster, more precise and easier to read than ever.

We've compiled this guide to the seven best thermometers to help you sort through what's on the market. From size and accuracy to features and cost, our guide will help you select the right thermometer for you and your family.

This content is meant to be informative, but should not be taken as medical advice. It is not intended for use as diagnosis, prevention or treatment of health problems.

Our Picks for the Best Thermometer:

• Best Digital Thermometer: Vicks ComfortFlex Digital Thermometer
• Best Thermometer for Adults: Kinsa QuickCare Smart Digital Thermometer
• Best Thermometer for Kids: Braun ThermoScan 7
• Best Thermometer for Fever: Vicks SpeedRead V912US
• Best Oral Thermometer: Boncare Thermometer
• Best In-Ear Thermometer: CHOOSEEN Digital Ear Thermometer
• Best Forehead Thermometer: HoMedics Thermometer

Best Digital Thermometer: Vicks ComfortFlex Digital Thermometer

Key features & specs

• Dimensions: 1.2 inches x 3.2 inches x 7.4 inches
• Weight: 1.76 ounces
• Display: Color-coded fever display (green for no fever, yellow for elevated and red for high fever)
• Response time: 8 seconds
• Bluetooth/App Connectivity: No
• Power source: CR1632 battery included
• Fever alert: Yes
• Memory: Allows the user to recall and display the last temperature
• Best for: Home first aid kit (since it comes with a storage case); people of all ages
• Price: $10.48 on Amazon

For almost 125 years, the Vicks brand has been linked with over-the-counter cold and flu remedies. You may be familiar with the company, which makes Nyquil and Vicks VapoRub. The Vicks ComfortFlex digital thermometer can be used as an oral thermometer (for adults), a rectal thermometer (for infants) or an axillary thermometer (for children). The Fever InSight feature uses color-coded screens to show readings (in degrees Fahrenheit or Celsius). Green indicates that there is no fever, yellow means a mild fever and red shows a high fever.

The features and affordability are what make this the best digital thermometer. It’s a no fuss, easy-to-read model that registers a temperature in eight seconds or less—important when you’re dealing with a fussy little one. The comfort flex tip is safe and comfortable for use with all ages. This thermometer also has a memory recall that shows the last reading and an automatic shut-off feature so batteries last longer. It also comes with a storage box and a one-year limited guarantee.

According to some users, getting a replacement battery for Vicks digital thermometers is difficult since they aren’t sold in retail stores. To be safe, it’s a good idea to order a back-up CR1632 battery before you need one. Coin batteries can last two to four years in storage.

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What we like:

• Fever Insight red/yellow/green indicator
• Rubber-coated probe for comfort
• Large display
• Waterproof for easy cleaning

What to consider:

• Hard to find replacement batteries from retailers

Best Thermometer for Adults: Kinsa QuickCare Smart Digital Thermometer

Key features & specs

• Dimensions: 5.7 inches x 3 inches x 1 inch
• Weight: 2.4 ounces
• Display: Backlit display
• Response time: 8 seconds
• Bluetooth/App Connectivity: Yes, connects to iPhones and Android phones
• Power source: One Replaceable battery (CR2032) included
• Fever alert: Yes
• Memory: Yes
• Best for: Teachers, first-time parents and grandparents (think baby shower gift)
• Price: $24.97 on Amazon

Kinsa Health was founded in 2012 with a mission to prevent the spread of illness. Kinsa designs smart thermometers that connect to smartphones. We chose Kinsa QuickCare as the best thermometer for adults because of its features. The thermometer and app collect anonymous temperatures and symptoms, indicating where sickness spreads in real-time. Then, information is shared with users via the Kinsa HealthWeather Map, so you can see when illness is going around your school or neighborhood.

Kinsa’s QuickCare Smart thermometer was also named "Best of Baby" by The Bump in 2018 and received the Good Housekeeping Parenting Award in 2021. When used with the app from the iTunes or Google Play stores, users get personalized tips for symptom relief and advice on when to call the doctor. The app saves temperature readings and lets you create separate profiles for each family member. Data can also be synced with Apple Health. Parents love that it sends reminders when it’s time for the next dose of fever medicine.

A large backlit display shows readings in °F or °C. Customers say that it yields more than 600 readings with one very budget-friendly battery. Kinsa also offers a one-year warranty. 

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What we like:

• Award winning product
• Free personalized advice
• Creates separate profiles for family members
• FDA-approved accuracy

What to consider:

• Designed to work with a smartphone
• Not a basic model thermometer

Best Thermometer for Kids: Braun ThermoScan 7

Key features & specs

• Dimensions: 5.4 inches x 2.7 inches x 8.2 inches
• Weight: 10.4 ounces
• Display: Color-coded readings (green, yellow, red)
• Response time: 2 seconds
• Bluetooth/App Connectivity: No
• Power source: 2 AA batteries
• Fever alert: Yes
• Memory: Stores the last nice readings
• Best for: Getting fast and accurate readings of toddlers and kiddos
• Price: $58.75 on Amazon

Braun is well-known for producing high-quality electrical products such as razors. We picked its ThermoScan 7 as the best thermometer for kids because it checks all the boxes. For starters, it's the number one brand recommended by pediatricians. Next, it offers one of the most accurate readings available, which is important when caring for a sick child. It uses infrared technology to scan the temperature of the ear canal and deliver readings in less than two seconds.

The Braun no touch ExactTemp system lets you know when the pre-warmed ear sensor is properly positioned with a light and beep. The Age Precision color-coded display shows you if there is a fever based on age range, since clinical research shows that the definition of fever changes from newborn to child. The thermometer display will appear green at normal temperature, yellow at mild fever and red at severe fever. In addition, it allows you to store and track up to nine previous readings. According to online reviews, accuracy may decline with batteries over two years old.

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What we like:

• Age-specific fever indicator
• Pre-warm tip for comfort
• Readings in less than two seconds
• Pediatrician recommended

What to consider:

• For use in-ear only
• Setup is required every time

Best Thermometer for Fever: Vicks SpeedRead V912US

Key features & specs

• Dimensions: 1.2 inches x 3.2 inches x 7.4 inches
• Weight: 1.76 ounces
• Display: Color-coded reading (green, red, yellow)
• Response time: 8 seconds
• Bluetooth/App Connectivity: No
• Power source: One LR44 battery required
• Fever alert: Yes
• Memory: Yes, recalls the last reading
• Best for: The whole family, since it can be used in different methods at any age; kids, who like that they can tell if they are sick by looking at the color
• Price: $9.82 on Amazon

The SpeedRead thermometer is best used orally. It gives you a temperature reading in eight seconds. We like the easy-to-read display, which makes Vicks SpeedRead V912US our top pick for the best thermometer for fever. The Fever InSight feature shows color-coded temperature readings in Fahrenheit or Celsius. With a glance, you’ll know if there’s a fever. Green means the temperature is normal, yellow means a low-grade fever and red is a high-grade fever.

This professional-grade thermometer turns off automatically after each use. It also saves the last temperature taken for easy comparisons. Vicks SpeedRead comes with a battery and a storage box for added convenience. Customers report that it's one of the quickest, most reliable and affordable options. However, depending on where it’s used, it could take longer to get a correct reading: around 11 seconds for rectal temperature, 15 seconds for oral and 16 seconds for axillary. The device beeps when the temperature is ready.

Broadening at the stem makes it awkward, but the overall readings are easy to take. The manufacturer cautions users to avoid getting the entire device wet, which could damage it. Only wash the tip and front half of the stick.

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What we like:

• Fever Insight color-coding
• Affordable
• Auto-off

What to consider:

• The heavy end may be difficult to hold in place orally
• Avoid eating or drinking 15 minutes before oral readings

Best Oral Thermometer: Boncare Thermometer

Key features & specs

• Dimensions: 4.93 inches x 0.76 inches x 0.49 inches
• Weight: 0.37 ounces
• Display: Liquid Crystal Display (LCD), large numbers are easy to read
• Response time: 10 seconds
• Bluetooth/App Connectivity: No
• Power source: One LR44 battery included
• Fever alert: Yes, beeper alarm
• Memory: Yes, recalls the last reading
• Best for: Women tracking basal body temperature (BBT) and ovulation cycles
• Price: $6.99 on Amazon

Boncare manufactures medical items such as thermometers and K95 masks. Its products are basic, long-lasting and reasonably priced. Because of its sleek design, rapid readings and simplistic function, Boncare stood out as the best oral thermometer.

The device includes a single on/off button and an LCD screen to display readings in just 10 seconds. It beeps when finished and features an auto-shutoff feature for long battery life. This digital thermometer is super-lightweight, so it should be easy to hold in place under the tongue for accurate readings. According to online reviews, it's easy and comfortable to use. Although, it's not ideal for use at night or in dark rooms since the LCD screen does not light up.

Boncare thermometers also come in different colors: orange, green, yellow, gray and light or dark blue. This might be useful to assign them to different people or uses. A few poor reviews mentioned the battery dying after only one year, although other customers raved that theirs lasted for years. To avoid problems, take special care to store the product by the manufacturer’s instructions.

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What we like:

• Simple design
• Lightweight for oral use
• Available in six colors
• Soft, silicone tip for comfort

What to consider:

• Best used in daylight or well-lit areas

Best In-Ear Thermometer: CHOOSEEN Digital Ear Thermometer

Key features & specs

• Dimensions: 1.38 inches x 0.6 inches x 6.3 inches
• Weight: 4.66 ounces
• Display: Color-coded reading (green, yellow, red)
• Response time: Instant-read
• Bluetooth/App Connectivity: No
• Power source: 2 AAA batteries included
• Fever alert: Visual
• Memory: Yes, recalls the last 35 readings
• Best for: Checking temperature during the night, since it has a silent mode and displays readings with a colored backlit screen
• Price: $27.99 on Amazon

Chooseen is a newer brand that started selling thermometers on Amazon in 2020. Though one could be skeptical of quality, it is reassuring that Chooseen only sells digital thermometers. This product caught our attention because it offers the most bang for your buck.

This thermometer features a sensor that uses infrared technology to measure heat. A colored backlight display panel will show green for normal, yellow for elevated temperature and red for high temperature. The device is equipped with a chip that gives it an impressive memory. This thermometer can recall the last 35 readings. It’s also fast—according to the manufacturer, it reads the temperature in one second.

Another unique feature of this device is the ability to switch from human to object mode. In object mode, the thermometer reads the surface temperature, such as how hot a baby’s bottle is.

It has been clinically demonstrated to be as accurate as infant rectal fever thermometers. This digital thermometer is appropriate for infants and the elderly. It is powered by 2 AAA batteries which are more convenient to replace than the button batteries commonly found in digital probes.

Reviews for this product are overwhelmingly positive, earning 4.3/5 stars from 8,511 reviews on Amazon at the time of writing. However, a few customers noted that their units stopped working after a few months. One user in February 2023 commented that his thermometer didn’t work, so he contacted the manufacturer, who admitted there was a defective lot. This thermometer comes with a 90-day money-back guarantee and an 18-month replacement warranty.

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What we like:

• Colored backlit display
• Rapid results in under one second
• Silent mode
• Stores 35 readings
• Also uses infrared technology to check the temperature of objects and rooms

What to consider:

• Forehead temperature readings may be less accurate

Best Forehead Thermometer: HoMedics Thermometer

Key features & specs

• Dimensions: 3.5 inches x 1.5 inches x 5.63 inches
• Weight: 6.08 ounces
• Display: 3-color backlight
• Response time: 2 seconds
• Bluetooth/App Connectivity: No
• Power source: 2 AAA batteries included
• Fever alert: Yes, 3-color backlit screen and audible fever alarm beep for high temperature
• Memory: Store up to 50 results of body, room, food or liquid temperatures
• Best for: Babies, toddlers and kids
• Price: $30.48 on Amazon

HoMedics is a leader in products related to health and wellness. The HoMedics Thermometer caught our eye and earned the title of best forehead thermometer for its versatility. This contactless scans the forehead using infrared technology and displays readings in only two seconds. It can be used at any age. The backlit display panel will turn green for normal temperature, yellow for elevated temperature and red for high fever. With fever, you will also hear an audible beeping sound.

This device has the greatest memory capacity of any on our list. It stores 50 readings, enabling easy tracking of temperature trends over time. It's considered a four-in-one thermometer because it can be used in four ways: to scan body temperature, food, liquid and room temperatures. It also has an auto power-off feature and a low battery indicator, ensuring energy efficiency and notifying users when a battery replacement is needed. The AAA batteries are easy to swap out.

HoMedics no-contact forehead thermometer performs well in consumer reviews. The major complaint is the accuracy of readings. However, you should be fine with proper positioning according to the manufacturer’s instructions. This product comes with a one-year warranty.

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What we like:

• Up to 50 results stored
• Four-in-one infrared thermometer
• Readings in under two seconds
• Visual and audible fever alarms

What to consider:

• Improper positioning can affect accuracy

How to Use a Thermometer

Thermometers provide an accurate and convenient way to measure the body’s internal temperature. Core body temperature is an important sign of health or illness. It’s commonly used to diagnose and treat infections. Thermometers can also help athletes detect heat exhaustion and heat stroke. Since our bodies are alive and constantly changing, temperatures change throughout the day.

Body temperature can be increased by:

• Physical activity
• Exposure to high temperatures or humidity
• Eating
• Strong emotions
• Ovulation and menstruation
• Some medications
• Wearing heavy clothes

Knowing your normal body temperature range can help you recognize when something unusual is going on.

You can check your temperature by placing a digital thermometer in the mouth, underarm or rectum. The National Library of Medicine gives these steps for using a thermometer correctly.

Mouth

Here are the steps to getting a correct reading by mouth (orally):

1. Close your mouth and place the probe under your tongue.
2. Breathe in via your nose.
3. Hold the thermometer tightly in place with your lips.
4. Keep the thermometer in your mouth for three minutes or until the device beeps.

Underarm

To get an accurate reading from the armpit, follow these steps:

1. Place the thermometer in the armpit.
2. Press the arm against the body.
3. Wait for five minutes or until the device beeps before reading.

Rectum

This approach is intended for newborns and young children. It may be unsafe to put a thermometer in their mouths or ears:

1. Apply petroleum jelly to the rectal thermometer tip or probe cover.
2. Place the child on a flat surface or your lap, face down.
3. Carefully spread the buttocks and put the bulb end into the anal canal, roughly 0.5-inch to one-inch (one to 2.5 centimeters). Be careful not to insert too far. Wiggling can cause the thermometer to move.
4. After three minutes, or when the thermometer beeps, remove it.

Before using the thermometer, wash your hands with soap and warm water. Clean your thermometer with a swab of rubbing alcohol or soap and lukewarm water before and after use. These steps can help stop the spread of germs that cause illness.

Normal body temperature vs. fever

According to the National Library of Medicine, adults have an average body temperature of 98.6 degrees Fahrenheit. However, a normal reading might vary from 97°F to 99°F. Fever occurs when the body temperature increases over average, which can vary depending on age and measurement method.

Digital Thermometer vs. Infrared Thermometer

Thermometers typically fall into one of two categories:

A digital thermometer is commonly called a “stick thermometer." It reads temperatures under the arm, by mouth or rectally. This thermometer has a metal probe to detect temperature and displays results on a screen. For accurate readings, it must touch the body. Digital probes are versatile and well-suited for all ages. However, they take longer to read than infrared thermometers.

Infrared thermometers are often called “no-contact” or “no-touch” thermometers. They use infrared technology to measure temperature. A major benefit is that this helps prevent the spread of germs since the probe doesn’t have to touch the body. Infrared thermometers are most often used to measure the surface temperature of the forehead. They are convenient for use at a distance and for checking large groups quickly.

Also, children may prefer infrared thermometers since they give readings in seconds and do not require contact. Still, it’s worth noting that they may not be as accurate as direct contact thermometers.

How to Choose the Best Thermometer for You

Choosing the right thermometer will help you get accurate measurements. Whether you’re checking your temperature for health or an illness, precision is key. This guide explores factors to consider when it comes to different types of thermometers.

Purpose and user

Determine if you need a thermometer for infants, children or adults, and choose accordingly.

Measurement method

Select an oral, ear, forehead or no-contact thermometer according to your preference and suitability.

Response time

Choose a thermometer that delivers the most accurate reading in the shortest time. The best infant thermometer gives accurate results within a few seconds. Since infants do not tolerate jabbing, you’ll likely want an infrared thermometer.

Accuracy

When it comes to accuracy, always select the most precise thermometers. Direct contact models are usually more accurate than infrared.

Backlit display

For reading a thermometer, you shouldn’t need a spotlight. Screens should be easy to read. A thermometer with a backlight will come in handy at night or in dimly lit rooms. In general, the larger the screen, the better for quick reading.

Ease of use

Look for a thermometer that is simple and easy to use. Before scanning, some devices require you to select settings or characteristics such as age group. Others involve connecting the device to a smartphone app. When comparing different models, keep setup time and difficulty in mind.

Features

Look for desirable features like an auto-off, flexible tips for comfort, adjustable sound volume and memory function.

Price

There are thermometers available to suit every budget. Even though there are less expensive solutions, it's essential to invest in a trustworthy and accurate thermometer, particularly if it will be used for medical purposes.

Our Methodology: How We Chose the Best Thermometers

To chose the best thermometers for this roundup, we considered the brand’s quality, safety, features and price. We chose thermometers that are dependable, accurate and long-lasting. We also did substantial digging into consumer reviews for each product to provide honest advice on the advantages and downsides of each product.

Best Thermometer FAQs

Which type of thermometer is the most accurate?

A recent study found the infrared in-ear thermometer to be the most accurate, when used correctly. Also called tympanic thermometers, they measure heat from the ear canal passage.

A word of caution, infrared ear thermometers aren't recommended for newborns. Their tiny ear canals are curved and may have earwax, both of which interfere with readings. For infants, the American Academy of Pediatrics recommends a rectal reading from a digital thermometer.

Do baby thermometers work on adults?

Yes, baby thermometers can also be used on adults.

How do I clean a thermometer?

You can clean a thermometer by wiping it with a cotton pad soaked in rubbing alcohol and letting it air dry. You can also use warm soapy water and a soft cloth to cleanse a thermometer’s case. It should never be immersed in water, and you should always follow the manufacturer's instructions.

How often should I use a thermometer?

A thermometer may be used at different times depending on the situation and individual needs. When you are sick or suspect a fever or illness (infection), measure your temperature two to three times per day. If you are tracking your basal body temperature, take the reading every morning.

Takeaway: Are Thermometers Necessary?

Thermometers are an important tool in any health and wellness arsenal. These inexpensive, widely available devices let you read the body’s core temperature so that you can tell when something is wrong. Thermometers aren't just for parents, grandparents and families with children; health and fitness aficionados should always have a dependable thermometer on hand. Heat disease is especially dangerous for runners, competitive athletes and anyone who works outside in hot weather. Medical thermometers are now more accurate, precise and simple to read than ever before. So, yes—whatever your health goals are, a thermometer is an important tool to have on hand.