Best Basal Thermometers of 2025

Elisa Drew Avatar
Elisa Drew
Last Updated: Jan 14, 2025

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Basal thermometers are specialized thermometers used to track a woman's basal body temperature, which is her body temperature at rest. These thermometers are highly accurate and sensitive, allowing women to detect even the slightest changes in their body temperature. Basal thermometers are often used by women who are trying to conceive, as they can help identify ovulation and fertility windows. These thermometers are also useful for tracking menstrual cycles and identifying any potential hormonal imbalances. Basal thermometers typically have a memory function, allowing women to easily track and analyze their temperature patterns over time.

At a Glance: Our Top Picks

Easy@Home Digital Basal Thermometer Cover #TOP 1
Easy@Home Digital Basal Thermometer
ftb score rating icon 9.9
iProven Digital Basal Body Thermometer Cover #TOP 2
iProven Digital Basal Body Thermometer
ftb score rating icon 9.8
Boncare 9 Seconds Digital Thermometer Cover #TOP 3
Boncare 9 Seconds Digital Thermometer
ftb score rating icon 9.6

Top 10 Basal Thermometers

#TOP 1

Easy@Home Digital Basal Thermometer

EBT-100B
Blue
1 Count (Pack of 1)
Easy@Home Digital Basal Thermometer Cover
Easy@Home Digital Basal Thermometer with Blue Backlight LCD Display, 1/100th Degree High Precision and Memory Recall, NOT Bluetooth Enabled, Upgraded EBT-100B(Blue)

The Easy@Home Digital Basal Thermometer is designed to monitor your ovulation cycle with accuracy and ease. With the Premom app, you can track your BBT charting, cover line, and ovulation test results for natural family planning. The thermometer has a large blue screen with a backlit display, making it easy to read in the dark. It is waterproof and has a flexible tip for easy use and cleaning. The thermometer measures basal body temperature with high precision (±0.05℃/±0.09℉) to 1/100th of a degree and can recall 30 temperature records in memory. A soft beeping alarm signals the completion of the test, while a fever beeping alarm warns of fever conditions.

What We Like
High precision measurement
Clear backlit display
Memory recall feature
Affordable price
What We Don't Like
Requires time for accuracy
No Bluetooth connectivity
#TOP 2

iProven Digital Basal Body Thermometer

BBT-113Ai
white
1 Count (Pack of 1)
iProven Digital Basal Body Thermometer Cover
Basal Body Thermometer - Ovulation Predictor - BBT for Fertility Tracking - Works with Every Ovulation APP - Accurate and Highly Sensitive - for Natural Family Planning - BBT-113Ai by iProven

iProven Digital Basal Body Thermometer is a precise ovulation tracker with a 1/100th degree measurement and 60-second quick reading. It allows you to manually enter the data into any ovulation app or track on paper. The battery can easily be replaced in four steps.

What We Like
Accurate temperature readings
Easy to read display
Convenient storage case
Excellent customer support
Affordable option
What We Don't Like
Button can be stiff
Long reading time
#TOP 3

Boncare 9 Seconds Digital Thermometer

Rice-white
Boncare 9 Seconds Digital Thermometer Cover
Boncare 9 Seconds Digital Basal Thermometer for Adults and Kids - Accurate Oral Thermometer with Fever Alarm, Rectal Thermometer for Baby with Large Display (Rice-White)

The Boncare Digital Thermometer is designed for quick and accurate temperature readings in just 9 seconds, making it perfect for all ages, from infants to adults. You can customize the measurement method—oral, armpit, or rectal—ensuring precise results tailored to your needs. The large, bright display makes it easy to read temperatures, day or night. Plus, it serves as a basal body thermometer, helping you track ovulation and fertility through manual temperature logging. This combination of features makes it a user-friendly choice for everyday health monitoring.

What We Like
Quick temperature readings
Large, easy-to-read display
Compact and portable design
Accurate and reliable measurements
Affordable price point
What We Don't Like
Backlight duration could be improved
Occasional reliability issues reported
#TOP 4

Easy@Home Basal Body Thermometer for Fertility Prediction

DMT-3018
Purple
Easy@Home Basal Body Thermometer for Fertility Prediction Cover
Easy@Home Basal Body Thermometer: BBT for Fertility Prediction with Memory Recall- Accurate Digital Basal Thermometer for Temperature Monitoring with Premom App - EBT-018

The Easy@Home Basal Body Thermometer accurately tracks ovulation and detects your fertile window, with high accuracy at ±0.05℃ or ±0.10℉. The Premom app charts your readings and draws your BBT shift digitally. It has a flexible and waterproof tip, memory recall, and takes only 1 minute to read the results. Suitable for adults, infants, babies and kids, and comes with a plastic storage case for portability. The thermometer is easy to use and clean, and can also be used as a fever digital clinical thermometer for oral, armpit, and rectal use.

What We Like
Accurate readings
Easy to use
Memory function
Compact design
Great value for money
What We Don't Like
Long time to beep
Inconsistent readings
#TOP 5

Tempx Basal Thermometer

Tempx
746608421877
Tempx Basal Thermometer Cover
Basal Thermometer for Adults and Kids, Fast & Accurate with Fever Alert, Mute Function, FSA/HSA Eligible - Essential for Babies and Adults, Lifetime Support Included

The Tempx Thermometer is designed for fast and accurate temperature readings, making it essential for families. With its non-contact feature, you can quickly measure temperatures for both adults and kids without any hassle. The intuitive color-coded indicators help you easily understand if a temperature is normal or needs attention. Plus, the large LED display ensures you can read the results even in dim light. With versatile functionality, it can measure forehead, room, and object temperatures, providing convenience for various needs.

What We Like
Quick temperature readings
Accurate measurements
Durable design
Easy to use
Compact and portable
What We Don't Like
Occasional confusion with instructions
#TOP 6

Easy@Home Smart Basal Thermometer with Premom

4332440610
EBT-300 Pink
1 Count (Pack of 1)
Easy@Home Smart Basal Thermometer with Premom Cover
Easy@Home Smart Basal Thermometer, Large Screen and Backlit, FSA Eligible, Period Tracker with Premom(iOS & Android) - Auto BBT Sync, Charting, Coverline & Accurate Fertility Prediction EBT-300

The Easy@Home Smart Basal Thermometer with Premom is an advanced Bluetooth-enabled basal thermometer that integrates with the Premom app, which accurately predicts the fertility window by incorporating multiple fertility signs including BBT, ovulation test results, PdG test results, and period information. The thermometer is clinically accurate with high precision, stores unlimited records on the cloud, has a large backlit screen, and offers a 1-year product quality guarantee.

What We Like
Auto-syncing with app
Quiet operation
Big, easy-to-read screen
Memory for multiple readings
Flexible and safe tip
What We Don't Like
Occasional syncing issues
Temperature accuracy concerns
#TOP 7

Easy@Home Digital Basal Thermometer with Large Backlit LCD Display

EBT-100B(BT-A23)-PURPLE:1
Purple
1 Count (Pack of 1)
Easy@Home Digital Basal Thermometer with Large Backlit LCD Display Cover
Easy@Home Digital Basal Thermometer with Large Backlight LCD Display, 1/100th Degree High Precision and Memory Recall, NOT Bluetooth Enabled,Upgraded EBT-100B-P (Purple)

The Easy@Home Digital Basal Thermometer with Large Backlit LCD Display is designed to measure Basal Body Temperature (BBT) with high precision to 1/100th of a degree accuracy. It comes with a large blue backlit screen that can recall 30 temperature records in memory. The thermometer is waterproof and has a flexible tip for easy cleaning. Additionally, it has a soft beeping alarm that signals the completion of the test, and a fever beeping alarm that warns the user in case of a fever.

What We Like
Backlit display for easy reading
Memory function for convenience
Comfortable and flexible design
Quiet operation
Includes extra battery
What We Don't Like
Syncing issues with app
Longer reading time
#TOP 8

Boncare 9 Seconds Digital Thermometer

Light Green
Boncare 9 Seconds Digital Thermometer Cover
Boncare 9 Seconds Digital Basal Thermometer for Adults and Kids - Accurate Oral Thermometer with Fever Alarm, Rectal Thermometer for Baby with Large Display (Light Green)

The Boncare Digital Thermometer offers quick and precise temperature readings, taking just 9 seconds to deliver accurate results. This makes it a dependable tool for measuring the temperature of everyone in your family, from infants to the elderly. You can choose to measure temperatures orally, rectally, or under the arm, enhancing accuracy based on your preference. Its large, easy-to-read display ensures you can effortlessly check the temperature at any time, day or night. With added features like a fever alarm, this thermometer is designed to keep you informed about your health.

What We Like
Quick, accurate readings
Large, easy-to-read display
Memory function for temperatures
Flexible, waterproof tip
Compact and portable design
What We Don't Like
Display may be difficult to see
Lacks a backlight
#TOP 9

Easy@Home Smart Basal Thermometer with Premom

EBT-300
EBT-300 Purple
1 Count (Pack of 1)
Easy@Home Smart Basal Thermometer with Premom Cover
Easy@Home Smart Basal Thermometer, Large Screen and Backlit, Period Tracker with Premom (iOS & Android) - Auto BBT Sync, Charting, Coverline, Accurate Fertility Prediction EBT-300 Purple

The Easy@Home Smart Basal Thermometer with Premom is perfect for those trying to conceive or track their fertility. With the Premom app, users can automatically chart their basal body temperature (BBT) and predict their fertility window accurately. The thermometer has high measurement accuracy at ±0.09℉/±0.05℃ and a large backlit screen for easy reading in the dark. The Premom app can incorporate all fertility signs, including BBT and ovulation and PdG test results for the best prediction.

What We Like
Accurate temperature readings
Easy Bluetooth connectivity
Comfortable flexible tip
User-friendly app
Helpful for tracking ovulation
What We Don't Like
Occasional Bluetooth connection issues
Beep sound can be loud
#TOP 10

Premom Digital Basal Body Thermometer EBT-380

EBT-380
Purple
Premom Digital Basal Body Thermometer EBT-380 Cover
Premom Digital Basal Body Thermometer for Ovulation: Smart Fertility Tracker with Large Backlight, 60 Memory Recall, 1/100th Degree High Precision - Accurate BBT Temperature for Adults | EBT-380

The Premom Basal Thermometer offers a user-friendly design that allows you to measure your ovulation temperature comfortably without needing to hold the device. With Bluetooth connectivity, your readings automatically sync to your smartphone, making it easy to track your data through the Premom App. The large backlit display ensures you can read your results clearly, even in low light. Plus, this thermometer provides precise temperature readings, helping you understand your unique body temperature shifts for more accurate fertility tracking.

What We Like
Accurate temperature readings
Unique and appealing design
Great for ovulation tracking
Easy app setup
Convenient logging feature
What We Don't Like
Battery installation may be tricky
App setup seems complex
Buying Guide Image

A Buyer's Guide to Basal Thermometers

What is a Basal Thermometer?

A basal thermometer is a type of digital thermometer that is specifically designed to measure a person's basal body temperature (BBT). BBT is the lowest body temperature that a person experiences during a 24-hour period and is typically measured first thing in the morning before getting out of bed.

Why Use a Basal Thermometer?

Basal thermometers are often used by women who are trying to conceive to help determine the best time to have intercourse. This is because a woman's BBT increases slightly after ovulation, making it a useful indicator of when ovulation is likely to occur.

In addition to helping with fertility, basal thermometers can also be used to help diagnose certain medical conditions, such as polycystic ovary syndrome (PCOS) and thyroid disorders.

How to Choose a Basal Thermometer

When choosing a basal thermometer, there are a few key factors to consider:

  1. Accuracy: It's important to choose a thermometer that is accurate to within 0.1 degrees Fahrenheit. This will help ensure that you get reliable and consistent readings.

  2. Ease of use: Look for a thermometer that is easy to use and read. Some thermometers have backlit displays and beeps to indicate when the reading is complete, which can be helpful.

  3. Memory function: If you want to track your BBT over time, look for a thermometer that has a memory function that can store multiple readings. This will make it easier to see patterns and identify ovulation.

  4. Additional features: Some basal thermometers come with additional features, such as alarms and data tracking software. These can be helpful if you want to track your BBT over time, but may not be necessary for everyone.

Conclusion

A basal thermometer can be a useful tool for women who are trying to conceive or for those who want to track their BBT for other reasons. By considering factors such as accuracy, ease of use, and additional features, you can choose a basal thermometer that meets your needs and helps you get reliable and consistent readings.

Frequently Asked Questions (FAQs)

1. Do I really need a basal thermometer?

While you can use a regular digital thermometer, a basal thermometer is recommended for tracking tiny changes in body heat. Basal thermometers provide faster and more accurate readings in tenths of a degree, making them ideal for tracking basal body temperature (BBT) changes, which can be helpful for fertility tracking.

2. What is the best basal temperature to get pregnant?

A typical BBT before ovulation is around 97–98°F (36.1–36.6°C). After ovulation, BBT rises by 0.5–1°F on average to 97–98°F (36.1–36.6°C) and remains higher until the end of the menstrual cycle. The most fertile days are usually 2–3 days before the BBT rise.

3. Where do you put a basal thermometer?

You can measure your basal body temperature orally, vaginally, or rectally. Vaginal or rectal measurements generally result in higher temperatures compared to oral measurements. It is important to consistently measure using the same method for accurate tracking.

4. When should I start using a basal thermometer?

Start taking your basal body temperature on the first day of your period and continue measuring every morning until your next period. This helps track changes in BBT throughout your menstrual cycle.

5. Can I use a regular thermometer to track fertility?

Yes, you can use a regular digital thermometer, but a basal thermometer is recommended for tracking fertility. A basal thermometer provides temperature readings in tenths of a degree, allowing for precise tracking of small changes in body heat, which can be beneficial for those trying to conceive or avoid pregnancy.

6. What temperature should you be if fertile?

Before ovulation, a woman's BBT typically ranges between 97°F (36.1°C) and 97.5°F (36.4°C). After ovulation, it rises to 97.6°F (36.4°C) to 98.6°F (37°C). Tracking your BBT every morning can help identify your fertile days.

7. What does BBT look like if pregnant?

A triphasic pattern on your BBT chart may indicate a potential pregnancy, but it is not a guarantee. A triphasic pattern suggests a slight increase in progesterone levels, leading to slightly higher temperatures. However, further pregnancy confirmation is needed.

8. Can I use a forehead thermometer for basal body temperature?

Forehead thermometers are not recommended for tracking basal body temperature. It is best to use a traditional basal thermometer that can be placed under the tongue. Ensure the thermometer measures temperature to two decimal places for accurate tracking of temperature shifts.

Editor's Notes

During our basal thermometer research, we found 24 basal thermometer products and shortlisted 10 quality products. We collected and analyzed 86,234 customer reviews through our big data system to write the basal thermometers list. We found that most customers choose basal thermometers with an average price of $14.42.

The basal thermometers are available for purchase. We have researched hundreds of brands and picked the top brands of basal thermometers, including Easy@Home, Boncare, Tempx, Premom. The seller of top 1 product has received honest feedback from 1,421 consumers with an average rating of 4.9.

Written by
Elisa Drew Avatar

Elisa Drew is a really professional copywriter specializing in baby products with five years of experience working as a pediatrician once. She has published a series of baby books purchased by over thirty thousand people in the United States.

Basal Thermometers Comparison Table

#TOP1
#TOP2
#TOP3
#TOP4
#TOP5
#TOP6
#TOP7
#TOP8
#TOP9
#TOP10
Brand Easy@Home iProvèn Boncare Easy@Home Tempx Easy@Home Easy@Home Boncare Easy@Home Premom
Special Feature Memory Recall, Blue Backlit Display, Ultra Clear Screen, Waterproof Probe, High Accuracy High Accuracy Large Display, Backlit, Alarm, Fast Reading System, High Accuracy 1 Minute Measurement, Switchable "F/C, Soft Beep, Waterproof Probe, High Accuracy Alarm High Accuracy Memory Recall, Blue Backlit Display, Ultra Clear Screen, Waterproof Probe, High Accuracy Large Display, Alarm, Fast Reading System, Fast Refresh, High Accuracy Low Screen Backlit Large Display, Low Battery Indicator, 60 Memory Recall, Auto Sync, High Accuracy
Age Range (Description) Adult Adult Newborn, infant, toddler, kid, youth, adult Adult; Kid; Baby Infant Adult Adult Newborn, infant, toddler, kid, youth, adult Adult Adult
Product Care Instructions Hand Wash Only Wipe Clean Wipe Clean Hand Wash Only Wipe Clean Wipe Clean Hand Wash Only Wipe Clean Wipe Clean Wipe Clean
Color Blue white Rice-white Purple - EBT-300 Pink Purple Light Green EBT-300 Purple Purple
Display Type LCD Digital Digital Digital Digital - LCD Digital Digital LCD Screen
Unit Count 1.0 Count 1.00 Count 1.0 Count 1.0 Count - 1.0 Count 1.0 Count 1.0 Count 1.0 Count -
Power Source Battery Powered - Battery Powered Battery Powered Battery Powered Battery Powered - Battery Powered - Battery Powered
Outer Material - Plastic Plastic" or "Silicone Plastic - - - Acrylonitrile Butadiene Styrene Plastic Plastic
Connectivity Technology NOT Bluetooth - - - - Bluetooth NOT Bluetooth Enabled - Bluetooth Bluetooth
FTB Score
ftb score rating icon 9.9
ftb score rating icon 9.8
ftb score rating icon 9.6
ftb score rating icon 9.4
ftb score rating icon 9.3
ftb score rating icon 9.1
ftb score rating icon 9.0
ftb score rating icon 8.9
ftb score rating icon 8.7
ftb score rating icon 8.5
Where to Buy