Hey! Are you searching thermometer? As you would expect, the best infant thermometer uses the latest technology to improve comfort and accuracy in diagnosing fever. The latest Temporal Artery Thermometers were released back in 2026.
The Top 5 Best Infant Thermometers in 2026
1. Best Infant Thermometer for Placement
Though this unit didn’t make it to our portable blood pressure monitor, it still has some quality. Let’s have a look!
There are basically five places to take a body temperature measurement of an infant:
Rectal
Ear
Forehead
Armpit
Oral
2. Rectal Thermometers
The younger the infant, the easier it is to take their temperature measurement using a rectal thermometer. This goes, uh, you know, in the little one’s bottom.
The rectal thermometer is still the “Gold Standard” for newborns. They are the most accurate but can be uncomfortable for infants. Probably the least favourite for parents taking a baby’s temperature, too.
As they get older, this becomes much more problematic for taking the temperature this way.
Best for babies under 6 months old
Con: it’s comfortable.
Benefit: Very accurate method of reading body temperature
TIP: Many of the newer thermometers are dual-purpose oral & rectal thermometers. Once you use a thermometer rectally, use a Sharpie to mark it as such on the thermometer.
While you could clean the thermometer thoroughly and use it later as an oral thermometer, we don’t recommend it. Why take the risk?
3. Best Infant Thermometer for Ear
Many doctors have adopted the baby ear thermometer. It’s the second most accurate method, is quick, with little fuss.
Digital Ear thermometers use an infrared beam to check the child’s temperature inside the ear canal. They work well for adults but are not recommended for infants under 6 months. Or older if your baby is a bit fidgety, like mine.
They’re among the best baby ear thermometers for temperature measurement, but the thermometer tip can cause discomfort when inserted into the ear, so they’re not suitable for every child.
Best For Infants over 6 months old
Con: The ear canal must be large enough to obtain a temperature measurement, which limits it to older babies.
Benefit: Accurate and quick. One of the easiest methods to get a temperature measurement is
4. Forehead Thermometers
The forehead is an easy place to take a temperature measurement. These are commonly referred to as forehead thermometers, but you often see them labelled in stores as temporal artery thermometers.
Though this unit didn’t make it to our BP monitor, it still has some quality. Let’s have a look! A temporal artery thermometer is a type of thermometer that uses infrared technology to scan an infant’s forehead and get a fast, precise temperature reading. You don’t even need to actually touch your infant’s head. Simply swipe from a few inches away to get a temperature reading.
These aren’t as accurate as rectal or ear thermometers, but the convenience makes them so appealing.
Best for any age
Con: Accuracy depends on buying a really good thermometer. As well as practice in taking the temperature. Most people take 3-4 temperature measurements to ensure a reliable reading.
Benefit: Very quick to get a temperature measurement and identify a fever.
5. Armpit Thermometers
The armpit is one of the easiest places to take a temperature. But the armpit is also one of the least accurate methods for measuring temperature.
1. Best for any age
2. Con: not very accurate.
3. Benefit: Super easy to take a temperature measurement.
6. Oral Thermometers
Taking an oral temperature measurement is one of the oldest and most reliable methods. It’s still used in many doctors’ offices. But it is also one of the most problematic methods because it takes 10 to 60 seconds to measure the temperature. And that length of time to keep a probe under the tongue can feel like an eternity to a sick infant.
Best For: older kids over 4 years old
Con: They take a while to get a reading, and placement in the mouth can vary in accuracy. You also need to ensure it remains clean and sanitary after each temperature measurement.
Benefit: Tried and proven method, very accurate, and probably used by your mom and grandmother
Choosing What’s Right for You
Remember that the rectal thermometers can be used on newborns, but you’ll need to wait until at least six months of age to use the forehead or ear thermometer and until four years old to use a thermometer in the mouth or under the arm.
The right thermometer for you and your family is the one you will feel comfortable using during what can sometimes be a worrisome time. Armed with a thermometer and a good paediatrician, you can rest assured that your baby will get the care they need when they need it.
Buying Guide
Here’s what to consider before you buy.
Features
As simple as digital thermometers are, some have bells and whistles that you might find convenient, such as soft or curved tips, or beeps that tell you when they’re in the right spot or when they’ve finished measuring the temperature.
(See below, “Choosing a Thermometer,” for more info.)
Response Time
A readout from a digital stick thermometer may take from 10 seconds to more than 80 seconds, depending on the model. Infrared thermometer readings take just 1 to 3 seconds, but may not be more accurate than an inexpensive digital stick thermometer.
Safety
Some models include probe covers, protective case covers, and other accessories that may pose a choking hazard to children. If the model you buy includes small parts, keep them out of the hands of unsupervised children.
Extras
If you’re purchasing an inexpensive digital stick thermometer, consider purchasing two: one to take oral temperatures and another to take rectal temperatures. That way, you won’t have to worry about keeping disposable thermometer covers on hand. Label each one with a permanent marker for its particular use.
(FAQs)
Q. What is the most accurate thermometer for infants?
A. Rectal thermometers are the most accurate for infants, according to the AAP. Many parents find axillary thermometers or ear and forehead thermometers easier to use on their children, but for the most accurate results, you should ideally follow up with a rectal reading, especially when taking a young baby’s temperature.
Q. What is the best way to check an infant’s temperature?
A. Lie your baby on his or her belly on a firm surface. Hold your baby still by gently pressing the palm of your hand against the baby’s back just above the buttocks (bottom). Using your other hand, gently insert the thermometer 0.5 inches into the rectum. Don’t push it in any longer.
Q. What is considered a fever in newborns?
Answer: A fever is formally defined by most medical care providers as a temperature of 100.4 degrees Fahrenheit (38 degrees Celsius) and above. Your baby’s body temperature rises to repel germs. The system increases body temperature to help eliminate germs without causing harm to your child.
Final Words
Here are the best baby thermometers you can buy: Best rectal thermometer: Vicks Rectal Baby Thermometer.
Best forehead thermometer:
Exergen Temporal Artery Thermometer. Best ear thermometer: Braun ThermoScan 7 Ear Thermometer. The best infant thermometer for adults & kids all over the world.
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