7 Best Basal Thermometers To Buy In 2023

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If you wish to track ovulation when trying to conceive, it’s time to buy the best basal thermometer. Read this post as we list the best options available online and tell you how to use them.

Basal thermometers help you measure your lowest body temperature and offer an accurate reading. With one of these, you can now keep records of your basal body temperature when trying to conceive or avoid pregnancy or to keep records of your menstrual cycle.

7 Best Basal Thermometers

1. Best High-Precision:Easy@Home Digital Basal Thermometer

The Easy@Home digital thermometer marks a blue backlit LCD along with 1/100th degree high precision. This basal thermometer can help you measure your body temperature whenever you wish to. The recall memory feature embedded in the thermometer can predict your fertility window and anticipated period to increase your chances of conception or avoid pregnancy naturally.


  • Flexible, waterproof tip
  • High clinical accuracy
  • 90-second response time


  • Some might feel it large and heavy
Price at the time of publication: $14.99

2. Best Bluetooth:Femometer Smart Basal Thermometer

The smart basal thermometer by Femometer is a smart thermometer that comes with adjustable volume and an easy-to-install app for iOS and Android smartphones. It can automatically sync data with a mobile app and helps track the menstrual cycle, predict ovulation day, and warn about important body changes.


  • High precision
  • Inbuilt Bluetooth for sync
  • Waterproof tip
  • FDA approved
  • One-year product quality service


  • Requires in-app purchase
  • Works only when connected with the app
Price at the time of publication: $29.99

3. Best With Memory Recall Feature:Mabis Digital Basal Body Thermometer

The Mabisdigital basal thermometer comes with a 12-month supply of ovulation charts, making it easier to trace your cycles and helping you on your journey to parenthood. The thermometer is tested for clinical accuracy and is made in an FDA- and ISO-registered facility.


  • LCD for instant temperature measurement
  • Clinically accurate digital body basal thermometer
  • Includes batteries
  • Has memory recall feature


  • Can’t keep the temperature in memory for long
  • Lacks backlit display
Price at the time of publication: $4.95

4. Best Easy-To-Use:Fairhaven Health Digital Basal Thermometer Tracker

Fairhaven Health Digital Basal Thermometer Tracker Image: Fairhaven Health

The digital basal body thermometer by Fairhaven Health Store is an easy-to-use thermometer. It can help you record your temperature during ovulation with its precise temperature reading.


  • Beeps at peak temperature
  • Accuracy to 1/10th of a degree
  • Memory recall feature of the last measurement


  • Reads only in Fahrenheit
  • Average battery life
Price at the time of publication: $10.95

5. Best With Large Display:Onetwothree Digital Basal Thermometer for Ovulation Tracking

The digital basal thermometer by Onetwothree comes with 60 days’ memory that makes ovulation tracking quite easy. This thermometer takes around 1.5 to 2 minutes to fetch results. With its large display, it is easy to see temperature. It features an alarm that can help you to take your temperature every day at the same time.


  • Comes with a blue backlit
  • Has auto power-off functionality
  • One-year product quality guarantee


  • Slow at reading temperature
  • Fragile material
Price at the time of publication: $21.87

6. Best With Three Modes:Femometer Digital Basal Thermometer With LCD Screen & Backlit

The oral basal thermometer by Femometer has an LCD screen and backlit feature for easy reading. This digital basal thermometer can automatically transmit data to the app via Bluetooth and saves you from any hassle of manual reading. The app can generate body basal temperature chart by using data and helps you find your fertile window and ovulation.


  • Comes with fast, normal, and mercury mode
  • Option to adjust beep sound
  • Inbuilt Bluetooth connectivity
  • Waterproof probe
  • Low battery reminder


  • Requires a monthly plan purchase to keep track of your record
Price at the time of publication: $42.99

7. Best App-Based:Natural Cycles Plan a Pregnancy Kit Fertility Tracker

The Natural Cycles is one among the primary app of its kind to be FDA cleared within the US and CE Marked in Europe. This thermometer uses the science of your unique cycle to seek out your fertile days, so you’ll plan conception with precision. It can measure blood temperature to two decimal places and is more sensitive than a daily fever thermometer because it detects shifts in temperature during the cycle.


  • Comes with six months of natural cycle subscription
  • Tenovulation tests
  • Supports five pregnancy tests
  • Works with an irregular cycle
  • Prompts to take ovulation and pregnancy tests


  • Need to pay charges after six months of trial usage
  • No backlit option in thermometer
Price at the time of publication: $63.99

How Do You Use A Basal Thermometer?

To use a basal thermometer, follow the steps:

  1. Uncap your oral thermometer and hold it under your tongue for at least 90 seconds.
  2. Remove your thermometer when you hear beeping sounds.
  3. If you are using a digital thermometer without the feature of auto-save functionality, note down your measurements manually.
  4. Try to measure your temperature every day at the same time for the best results.

How To Choose The Right Basal Thermometer?

Choosing the right basal thermometer can be simple if you keep the following considerations in mind.

  1. Type: Basal thermometers are of three primary types, digital, glass, smart basal thermometers. Depending on the one you select, they can vary in functionality, display, ease of reading, smart functionality, and the likes.
  2. Accuracy: Thermometers can also vary in their accuracy of reading, differing on your experience and result. You should consider the thermometer that provides the most accurate results within a short span of testing, reducing any hassle of waiting.
  3. Battery type: Basal thermometers are backed by either rechargeable batteries for multiple uses or replaceable, whereby the latter would need replacement after optimal use. Rechargeable batteries are preferable to the other ones.
  4. Memory retention: Not all basal thermometers are designed to retain the reading memory from previous tests. However, such a feature can help you accurately predict ovulation and pregnancy, which makes them preferable to others.

Measuring ovulation and fertility can be the key to a healthy pregnancy. Therefore, whenever you buy a basal thermometer, keep all the above things in mind. Then, you can pick a suitable one from the above list of the best basal thermometers.

Why Trust MomJunction?

We have put together this list of the best basal thermometers after carefully studying the requirements of the readers through numerous user reviews. We have also reviewed the data from trustworthy sources and related forums to choose the products that will best suit your needs. A buying guide has also been prepared to help you confidently make a well-informed decision.

Frequently Asked Questions

1. What should my basal body temperature be?

Your basal body temperature before ovulation will usually be between 97.0℉ and 98.0 ℉. The temperature could then increase to 0.5℉-1℉ after ovulation and until you start your menstruation (1).

2. How should I measure my basal body temperature?

Measure your BBT in the morning. You can use digital or oral thermometers to take oral, rectal, and vaginal readings. Ensure that you place the thermometer in the same place daily.

3. How do basal body thermometers work?

Basal thermometers work like regular thermometers. However, these thermometers can read the minute change in temperature by even a tenth of a degree.

4. Can a regular thermometer be used for measuring basal body temperature?

Yes, if a regular thermometer is accurate to 1/10th a degree, it can be used to measure the basal body temperature (1).

5. What is the difference between a basal and a regular thermometer?

Unlike regular thermometers, basal thermometers are more accurate in recording tiny changes in body temperature. They are also faster and help record a person’s at-rest temperature.

Monitoring your body’s temperature using the best basal thermometers can help keep track of the menstruation cycle and ovulation. When buying one, it is important to consider the accuracy of the temperature, durability, and time taken to read and display the temperature. It is also essential to pick one that is FDA-approved, easy to use, and displays information effectively. We recommend you buy a basal thermometer that can be paired with your smartphone and sync data. They keep you informed about any temperature changes and help you in a big way, especially when you want to delay pregnancy.


MomJunction's articles are written after analyzing the research works of expert authors and institutions. Our references consist of resources established by authorities in their respective fields. You can learn more about the authenticity of the information we present in our editorial policy.
  1. Physiology, Ovulation And Basal Body Temperature

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