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Having an accurate, reliable, and easy-to-use infant thermometer can help when checking the temperature of a child.

Here we look at some of the best infant thermometers and what to consider when choosing a thermometer.

Different thermometer types take the temperature from different parts of the body, including the rectum, mouth, ear, forehead, and underarm.

The age of the child and type of thermometer can affect the accuracy of a reading.

Johns Hopkins Medicine offer the following advice on using thermometers on infants:

  • use a digital thermometer
  • avoid using a strip thermometer for babies
  • avoid mercury thermometers as mercury is very toxic
  • use a rectal thermometer for infants under 3 years
  • temporal artery thermometers, which measure forehead temperature, are also very accurate and may provide less discomfort for young infants
  • underarm thermometers can give an idea of temperature but are less accurate
  • ear thermometers may not be accurate enough in newborns
  • use the thermometer according to the instructions

People may find an oral thermometer harder to use in younger children, as it requires placing the thermometer under the tongue.

People can also look for a thermometer that has Food and Drug Administration (FDA) approval.

People may also want to consider certain features that can make a thermometer easier to use:

  • a flexible tip can make a rectal thermometer more comfortable for an infant
  • a backlit display to make it easier to read at night, or one that speaks the temperature
  • a memory feature to track temperatures
  • a fast response to make it easier to take a temperature quickly
  • a multi-type thermometer to provide multiple readings, use for all the family or continued use as the child gets older
  • an easy to clean to prevent bacteria from spreading
  • an alarm or color code feature that indicates when a temperature is too high for each age group

Please note, the writer has not tested these products. All information is research-based.

1. Fridababy Quick-Read Rectal Thermometer

The Fridababy is a rectal thermometer, making it a good option for newborns. According to the product website, this thermometer:

  • provides readings within 10 seconds
  • includes a stopper to prevent inserting the probe too far
  • has a back-lit display for easy nighttime readings
  • is BPA- and latex-free
  • is water-resistant for cleaning
  • has a memory function to help track temperatures and stores 10 previous readings
  • comes with a carry case

Multiple reviews on the product website state it is quick, accurate, and easy to use.

Fridababy Quick-Read Rectal Thermometer is available for purchase online.

2. Kinsa QuickCare Smart Thermometer

The Kinsa QuickCare is an oral, rectal, and underarm thermometer. It also connects to an app to provide personalized advice on steps to take, depending on the reading.

According to the product website, this thermometer:

  • provides a reading in 8 seconds or less
  • has FDA approval for safety and accuracy in all ages
  • has a flexible tip for insertion
  • offers a backlit display
  • takes readings in °F or °C
  • has a replaceable battery
  • comes with a storage pouch

The Kinsa QuickCare Smart Thermometer is available for purchase online.

3. iProven DMT-489 Dual Mode Thermometer

The iProven Dual Mode is an ear and forehead thermometer. According to the product website, this thermometer:

  • has a forehead option suitable for all ages and provides a reading in 3-5 seconds
  • has an ear thermometer option suitable for 6-month-old babies and provides a reading in 1-2 seconds
  • takes readings in °F or °C
  • has a memory function that stores up to 20 readings
  • has a backlit display
  • beeps and shows a red light to indicate a fever
  • durable materials

Customers have a 30-day money-back guarantee.

The iProven DMT-489 Dual Mode Thermometer is available for purchase online.

4. Exergen Temporal Artery Thermometer

The Exergen thermometer swipes across the forehead to take a reading. According to the product website, this thermometer:

  • has non-invasive infrared technology
  • is suitable for use on all ages
  • is ideal for use on a sleeping infant or for an ear infection
  • recommended by doctors

The Exergen Temporal Artery Thermometer is available for purchase online.

5. Vicks Baby Rectal Thermometer

The Vicks rectal thermometer has a short, flexible probe for safe and easy insertion. According to the company, this thermometer:

  • is compact and easy to use
  • has a large backlit display
  • is easy to clean
  • is waterproof
  • is suitable for newborns and above
  • gives a reading in 10 seconds

The Vicks Baby Rectal Thermometer is available for purchase online.

6. Braun ThermoScan7 Ear Thermometer

The Braun ThermoScan7 is an ear thermometer that allows people to set the child’s age to get a fever reading specific to that age group. According to the product website, the thermometer:

  • offers age precision settings for 0-3 months, 3-36 months, or 36 months+
  • is recommended by pediatricians
  • has a red, yellow, or green color-coded display for quick and easy interpretation of the results
  • has a pre-warmed tip for accuracy
  • has a light and beep to show accurate positioning
  • has a front display and night light
  • stores previous nine readings
  • comes with BPA- and latex-free disposable filters for hygiene

The Braun ThermoScan7 Ear Thermometer is available for purchase online.

7. Safety 1st Rapid Read 3-in-1 Thermometer

The Safety 1st thermometer is an oral, rectal, and underarm thermometer, so it could be a good option to suit multiple family members or adapt as an infant grows.

According to the product website, this thermometer:

  • provides an accurate reading in 8 seconds
  • beeps to indicate when a reading is complete
  • has a flexible tip for rectal use
  • has a gauge to help prevent over inserting
  • comes with a long-life battery
  • includes a storage case

The Safety 1st Rapid Read 3-in-1 Thermometer is available for purchase online.

8. American Red Cross Quick Read Digital Thermometer

The American Red Cross thermometer provides quick and accurate rectal, underarm, or oral readings. According to the company, this thermometer:

  • provides an accurate reading in under 10 seconds
  • has a flexible tip for comfort
  • includes a protective cover to keep thermometer clean between uses

The American Red Cross Quick Read Digital Thermometer is available for purchase online.

9. Kamsay Digital Thermometer

The Kamsay Digital is a waterproof, easy to clean rectal thermometer. According to the product website, this thermometer:

  • delivers 100% accurate readings in 10 seconds
  • is FDA-certified
  • has a soft, flexible tip for comfort
  • has a large display with light
  • takes readings in °F or °C
  • is waterproof
  • has a fever alarm
  • comes with a spare battery and a 1-year warranty

The Kamsay Digital Thermometer is available for purchase online.

10. Metene LPOW Fast Reading Non-Contact Forehead Digital Thermometer

The Metene non-contact thermometer allows people to take a reading without touching an infant, making it ideal for taking temperatures without waking a sleeping child. According to the product website, this thermometer

  • takes a reading within 2 inches of the forehead
  • provides a reading in 1 second
  • is FDA-certified
  • provides accurate readings
  • stores 50 readings
  • is suitable for use on all ages
  • has the option to choose between fever alert and mute mode
  • has a red, yellow, and green color system to show fever
  • takes readings in °F or °C
  • can also check food, liquid, or room temperatures

The Metene LPOW Fast Reading Non-Contact Forehead Digital Thermometer is available for purchase online.

Having an easy to use and accurate thermometer is important for checking if an infant has a normal temperature or not.

A rectal or temporal artery thermometer may be the best option for children under 3 years, while ear and oral thermometers may be suitable for older children.

Call a doctor if an infant:

  • is less than 3 months old and has a temperature of 38°C or above
  • is 3-6 months old and has a temperature of 39°C or above
  • has a rash or other symptoms
  • is not acting like their usual self
  • does not want to eat or drink
  • has a temperature that lasts for more than 5 days
  • is dehydrated

Learn more about normal body temperature range in adults and children here.