7 Best Digital Thermometers of 2026: Oral and Rectal
By Dr. David Taylor, MD, PhD Updated
Jump to our top picks ↓
When people search for a digital thermometer, most want the classic stick: a small probe you place under the tongue, under the arm or, for babies, in the rectum. These thermometers are inexpensive, reliable and simple, and a rectal reading with one is still the measurement pediatric guidance relies on for infants. This guide reviews seven digital stick thermometers and leaves out forehead and ear models, which work differently.
If you prefer a no-touch reading, see our guide to the best forehead thermometers. For tympanic readings, see the best ear thermometers. And if you are choosing one thermometer for a household of adults, our best thermometers for adults guide compares every type side by side.
| Product | Price | Buy |
|---|---|---|
| Vicks SpeedRead Digital ThermometerBest Overall | $9.89 | View on Amazon |
| Boncare Digital ThermometerBudget Pick | $6.99 | View on Amazon |
| Kinsa QuickCare Smart Digital ThermometerUpgrade Pick | $29.50 | View on Amazon |
| Braun Digital ThermometerRunner-Up | $19.86 | View on Amazon |
| Frida Baby Quick-Read Digital Rectal Thermometer | $13.97 | View on Amazon |
| Vicks ComfortFlex Digital Thermometer | $13.93 | View on Amazon |
| FDK Large Display Digital Thermometer | $19.99 | View on Amazon |
Find the Right Digital Thermometer for Your Need
Jump to the pick that matches your situation:
- Overall best digital thermometers, with every pick reviewed
- Best digital thermometer for fever
- Best oral digital thermometer
- Best digital thermometer for babies
How We Selected These Digital Thermometers
Every pick is a digital stick thermometer for oral, rectal or underarm use. We compared reading speed, tip design, display, memory and included accessories, and looked at each listing’s current rating pool. We checked each listing for stock and a new-condition buy box. We favored products with clear fever color-coding or alerts, since most people use a thermometer to answer one question: is this a fever?
Best Digital Thermometers Overall
Vicks SpeedRead is the best overall pick for most households. The other six cover a tight budget, fever tracking, comfort, babies, children and older adults.
Vicks SpeedRead Digital Thermometer: Best Overall
Vicks SpeedRead does the basic job well and costs little. It reads in about 8 seconds, and its color-coded screen turns green, yellow or red so you can tell normal from elevated from high without remembering numbers. It works by mouth, rectum or armpit, recalls the last reading, and is water resistant for cleaning.
It is the thermometer most households should keep in the medicine cabinet. The one thing it lacks is a flexible tip, which some children find more comfortable. If that matters to you, the Vicks ComfortFlex below is the same idea with a softer tip.
Vicks SpeedRead Digital Thermometer
by Vicks
A fast, simple, color-coded stick thermometer from a mainstream brand, at a price that suits every medicine cabinet.
Pros
- Reads in about 8 seconds by mouth, rectum or armpit
- Color-coded Fever InSight screen shows green, yellow or red at a glance
- Recalls the last reading, handy when you check again an hour later
- Water resistant for cleaning, battery included, 1-year limited warranty
Cons
- No stated accuracy figure on the listing
- Standard tip rather than a flexible one, which some children find less comfortable
Boncare Digital Thermometer: Best Budget
Boncare is the lowest-priced thermometer on this page and has the deepest rating pool, at more than 33,000 ratings. It uses a soft silicone tip over a stainless steel probe, takes about 10 seconds, beeps when done and recalls the last reading. The tip is waterproof for easy cleaning.
At this price it is easy to buy two: one marked for oral use and one for rectal use, which is good hygiene in a house with a baby. The trade-off is a plain screen with no color coding or backlight.
Boncare Digital Thermometer
by Boncare
The budget workhorse: cheap enough to keep a dedicated oral and a dedicated rectal thermometer.
Pros
- Lowest price on this page, so you can keep one per household or per child
- Deepest rating pool here, at more than 33,000 ratings
- Soft silicone tip over a stainless steel probe, for oral, rectal or underarm use
- Waterproof tip, fever beeper and last-reading memory
Cons
- About 10 seconds per reading, slightly slower than the 8-second models
- Plain LCD with no color coding or backlight
Kinsa QuickCare Smart Digital Thermometer: Upgrade Pick
Kinsa QuickCare is a stick thermometer that pairs with a free phone app. Each reading can be saved to a family member’s profile with symptoms, and the app offers care guidance based on age and symptoms. That is useful when a child’s fever runs over several days and you want an accurate log for the pediatrician.
The thermometer itself is solid: FDA-cleared, meets ASTM standards, reads in under 8 seconds, and has a soft flexible tip and a backlit display. If you will not use the app, a cheaper stick does the same core job.
Kinsa QuickCare Smart Digital Thermometer
by Kinsa
The smart stick thermometer for parents who want a fever log and symptom guidance on their phone.
Pros
- Pairs with the free Kinsa app to log each family member's temperatures and symptoms
- FDA-cleared, meets ASTM standards, reads in under 8 seconds
- Soft, flexible tip for oral, rectal or underarm use
- Large backlit display with fever indicators, easy to read at night
Cons
- Costs several times more than a basic stick thermometer
- The app is the main reason to buy it, so it adds little if you will not use it
Braun Digital Thermometer: Runner-Up
The Braun stick has a small, soft, flexible tip that makes oral and rectal readings more comfortable. Its large backlit screen turns green, yellow or red, it reads in as fast as 8 seconds, and it comes with 5 disposable probe covers and a protective cap. The covers are a real plus when one thermometer is shared across a family.
It has a smaller rating pool than Vicks and costs more for similar core features. Choose it if comfort and hygiene matter more than price.
Braun Digital Thermometer
by Braun
A comfortable flexible-tip stick with a bright color-coded screen and probe covers in the box.
Pros
- Small, soft, flexible tip for oral, rectal or underarm readings
- Large backlit screen turns green, yellow or red for normal, mild and high fever
- Reads in as fast as 8 seconds
- Comes with 5 disposable probe covers and a protective cap
Cons
- Smaller rating pool than the other mainstream picks
- Pricier than Vicks for similar core features
Frida Baby Quick-Read Rectal Thermometer: Best for Babies
The Frida Baby Quick-Read is built for one job: rectal readings in babies. A rectal temperature is the most reliable reading at that age, and it is the method to use for infants under 3 months. Insert it only as far as the manual directs. The thermometer shows a quick first number at about 10 seconds and a final reading at about 30. Wait for the final number before acting on it.
It holds the top rating on this page at 4.7 stars across more than 11,000 ratings. It is rectal only, so pair it with a separate oral thermometer for older children and adults.
Frida Baby Quick-Read Digital Rectal Thermometer
by Frida Baby
The baby rectal thermometer to keep in the nursery, built for the reading pediatricians trust most in infants.
Pros
- Designed only for rectal readings in babies, the most reliable method at that age
- Quick first number at about 10 seconds, final reading at about 30
- 4.7 stars across more than 11,000 ratings, the top rating on this page
- Water resistant and easy to clean between uses
Cons
- Rectal only, so you still need a separate thermometer for oral use
- You need to wait for the final reading rather than trusting the first number
Vicks ComfortFlex Digital Thermometer: Best Flexible Tip
ComfortFlex is SpeedRead with a flexible tip and a fully waterproof, BPA-free body. The tip bends with the mouth, which helps with children who fuss at oral readings, and it works for rectal and underarm readings too. It keeps the 8-second reading, the color-coded screen and last-reading memory.
You pay a little more than SpeedRead for the tip. For adults who do not mind a standard tip, SpeedRead is the better buy.
Vicks ComfortFlex Digital Thermometer
by Vicks
SpeedRead with a flexible tip and a waterproof body, a better fit for wriggly children.
Pros
- Flexible tip that bends with the mouth, more comfortable for children
- About 8-second readings with the same color-coded Fever InSight screen as SpeedRead
- Waterproof and BPA free, so you can wash it thoroughly
- Recalls the last reading
Cons
- Costs more than SpeedRead for the flexible tip alone
- No backlight
FDK Large Display Digital Thermometer: Best for Older Adults
FDK’s thermometer has a large LCD with a blue backlight for normal readings and a red one for fever, which makes it easy to read without glasses. It reads in about 8 seconds, recalls the last reading, has a flexible tip and offers English and Spanish options. The maker states accuracy to within 0.1°F.
It has the smallest rating pool here and comes from a lesser-known brand. For an older adult who struggles to read a small screen, it is still the most practical choice on this list.
FDK Large Display Digital Thermometer
by FDK
A big, bright screen that older adults can read without their glasses.
Pros
- Large LCD with a blue backlight for normal readings and red for fever
- About 8-second readings, with accuracy to within 0.1°F stated by the maker
- English and Spanish options and a °F/°C switch
- Flexible tip and a storage case
Cons
- Smallest rating pool on this page
- Lesser-known brand
Best Digital Thermometer for Fever
For checking a fever, you want a fast reading and a screen that tells you at a glance whether the number is a concern. A temperature of 100.4°F (38°C) or higher is generally considered a fever. All three picks below color-code the result, and Kinsa adds a log so you can see how a fever changes over several days.
| Product | Price | Buy |
|---|---|---|
| Vicks SpeedRead Digital ThermometerBest for fever overall 8-second reading with a green, yellow or red screen | $9.89 | View on Amazon |
| Braun Digital ThermometerBest comfortable option Flexible tip and backlit color-coded screen, with probe covers for sharing | $19.86 | View on Amazon |
| Kinsa QuickCare Smart Digital ThermometerBest for tracking a fever Logs every reading in an app so you can report the pattern to your doctor | $29.50 | View on Amazon |
Best Oral Digital Thermometer
For oral readings in older children and adults, place the tip under the tongue, close the lips and wait 15 minutes after eating or drinking. Any stick thermometer works, so choose on comfort, screen size and price.
| Product | Price | Buy |
|---|---|---|
| Vicks SpeedRead Digital ThermometerBest oral thermometer overall Fast, color-coded and inexpensive | $9.89 | View on Amazon |
| Boncare Digital ThermometerBest budget oral thermometer Lowest price on this page, with a soft silicone tip | $6.99 | View on Amazon |
| FDK Large Display Digital ThermometerBest for older adults Large backlit screen that is easy to read without glasses | $19.99 | View on Amazon |
Best Digital Thermometer for Babies
For babies, a digital stick thermometer used rectally gives the most reliable reading, and it is the method to use under 3 months. A rectal temperature of 100.4°F or higher in a baby under 3 months needs a call to the doctor right away. Use a thermometer with a short or flexible tip, a little petroleum jelly, and insert only as far as the instructions say.
| Product | Price | Buy |
|---|---|---|
| Frida Baby Quick-Read Digital Rectal ThermometerBest for newborns Built only for rectal readings | $13.97 | View on Amazon |
| Braun Digital ThermometerBest flexible-tip option Soft flexible tip with probe covers in the box | $19.86 | View on Amazon |
| Vicks ComfortFlex Digital ThermometerBest for toddlers Flexible tip and waterproof body for wriggly toddlers | $13.93 | View on Amazon |
How to Take an Accurate Temperature With a Stick Thermometer
The thermometer is only half of an accurate reading. The other half is technique, and it differs by site.
For an oral reading, wait about 15 minutes after eating, drinking, smoking or exercise. Place the tip under the tongue, to one side and toward the back, where the heat pockets sit. Close the lips gently around the thermometer, breathe through the nose, and keep still until it beeps. Oral readings suit adults and children old enough to hold the thermometer in place without biting it, usually from about age 4.
A rectal reading is the most reliable reading for babies and young children. Clean the tip, add a little petroleum jelly, and lay the baby on their back with knees bent toward the chest or tummy-down across your lap. Insert the tip gently, only as far as the instructions say, and hold it steady until it beeps. Never force it. Label a rectal thermometer clearly and never use it by mouth afterwards.
For an underarm reading, place the tip in the center of a dry armpit and hold the arm firmly against the body until the reading finishes. Underarm readings are the easiest but the least reliable and tend to run lower than oral or rectal readings. Use them for a quick check, and confirm a possible fever with an oral or rectal reading.
Whatever the site, clean the tip with soap and water or rubbing alcohol before and after use, and replace the battery when the screen fades. A reading that seems far too low usually means the tip was not in place long enough, so take it again.
Buyer's Guide
A digital stick thermometer is a simple tool, and the right one depends on who you are measuring, which reading site you will use, and how easy the screen is to read.
Reading Site
Most stick thermometers work orally, rectally and under the arm. Rectal is the most reliable reading and the one to use for babies. Oral is accurate for older children and adults when the mouth stays closed. Underarm is easiest but least reliable and reads lower. Keep a separate, labeled thermometer for rectal use.
Speed
Most current models read in about 8 to 10 seconds orally. Rectal and underarm readings can take longer, and some baby rectal thermometers show a quick first number before a final one. With a sick, restless child, a few seconds matters, but always wait for the final beep.
Tip Design
A flexible tip bends with the mouth and is more comfortable for children, and many parents find it easier for rectal readings. A rigid or standard tip is fine for adults. A short probe with a clear insertion limit is the safest choice for newborns.
Display and Fever Alerts
Color-coded screens that turn green, yellow or red make results easy to read at a glance, especially at night. A backlight helps in a dark bedroom. Large-digit screens suit older adults and anyone with weak eyesight. A fever beep is useful when you cannot look at the screen.
Memory and Tracking
Almost every stick thermometer recalls the last reading, which helps when you check again an hour later. If you want to track a fever over several days or across several family members, an app-connected thermometer like Kinsa keeps a log for you.
Hygiene and Cleaning
Clean the tip before and after every use with soap and water or rubbing alcohol. Waterproof models can be rinsed more thoroughly. Probe covers add a layer of hygiene when one thermometer is shared. Digital thermometers are generally eligible for FSA and HSA spending as medical devices.
How to Choose the Best Digital Thermometer
Start with who you are measuring. For a baby, get a rectal-capable stick and keep it labeled for rectal use only. For older children, a flexible tip makes oral readings easier. For older adults, a large backlit screen matters more than speed.
Then decide how much tracking you want. A basic stick that recalls the last reading is enough for most households. If you are managing a child’s fever over several days, or want readings to share with a doctor, an app-connected thermometer earns its higher price. If you need to convert a reading between scales, our Celsius to Fahrenheit converter does it instantly.
Final Verdict
Vicks SpeedRead is the best digital thermometer for most people in 2026: an 8-second reading, a clear color-coded screen and a low price. Boncare is the best budget pick, cheap enough to keep separate oral and rectal thermometers. Kinsa QuickCare is the upgrade for parents who want a fever log, and Frida Baby’s Quick-Read is the one to keep in the nursery.
Retire any old mercury thermometer, which our digital versus mercury thermometer guide explains. For tracking fertility rather than fever, a two-decimal basal digital thermometer is the right tool. Call a doctor for any fever in a baby under 3 months, or for a fever with worrying symptoms at any age.
Frequently Asked Questions
Which type of digital thermometer is most accurate?
What temperature is a fever on a digital thermometer?
Which digital thermometer is best for babies and newborns?
How do I get an accurate oral reading?
Are digital thermometers safer than mercury thermometers?
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About the Reviewer
Drexel University College of Medicine (MD), Indiana University School of Medicine (PhD)
Dr. David Taylor is a licensed physician and medical researcher who founded BestRatedDocs in 2016. With an MD from Drexel University and a PhD from Indiana University School of Medicine, he combines clinical expertise with a passion for health technology to provide evidence-based product recommendations. Dr. Taylor specializes in health informatics and regularly evaluates medical devices, diagnostic equipment, and therapeutic products to help healthcare professionals and patients make informed decisions.