The 6 Best Basal Thermometers

Updated October 03, 2017 by Brett Dvoretz

6 Best Basal Thermometers
Best High-End
Best Mid-Range
Best Inexpensive
We spent 43 hours on research, videography, and editing, to review the top choices for this wiki. If you're trying to have a baby and want to improve your chances of fertilization, then try one of these basal thermometers. By accurately tracking your body temperature, they can predict when you will be ovulating, giving you a better shot at conceiving. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best basal thermometer on Amazon.

6. Sure Success AET-F101

The Sure Success AET-F101 has a pink rim around the screen to reduce the possibility of mistaking it for a regular thermometer in the medicine cabinet, along with buttons that let you sift through your recorded readings. Unfortunately, the alarm clock is a bit loud.
  • detects up to nearly 110 degrees
  • comes with a battery
  • ovulation chart is too small
Brand Sure Success
Model AET-F101
Weight 4 ounces
Rating 4.2 / 5.0

5. Mabis Dmi Healthcare

The Mabis Dmi Healthcare comes with two basal thermometers, so you don't need to run to the store if you misplace one, and you need a reading ASAP. Each thermometer has a comfortable grooved area for you to rest your thumb while you hold it in place.
  • set has five probe covers
  • includes 12 ovulation charts
  • display screen is hard to read
Brand Mabis
Model pending
Weight 4 ounces
Rating 3.9 / 5.0

4. Easy@Home Smart Fertility Tracker

The Easy@Home Smart Fertility Tracker has a discreet design with a protective cap to take with you wherever you go, and in place of a screen or button, it automatically syncs with the app so you can track your cycle at any time.
  • ios and android capable
  • information stores to the cloud
  • readings in celsius and fahrenheit
Brand Easy@Home
Model pending
Weight 5.6 ounces
Rating 4.5 / 5.0

3. iProven BBT-113A2

The iProven BBT-113A2 is designed to take your basal body temperature the moment you wake up in the morning, which is when readings are the most accurate. It has a ready beep that's loud enough to notify you, but quiet enough so as not to disturb others.
  • includes a protective case
  • shows your previous temperature
  • displays readings for five minutes
Brand Thermometer - by iProve
Model BBT-113A2
Weight 1.6 ounces
Rating 4.5 / 5.0

2. Generation Guard Clinical

If you've gone through a lot of thermometers in your attempts to get pregnant and don't want to spend much on another one, the Generation Guard Clinical will match your budget and be dependable. Its accuracy is within 1/100th of a degree.
  • completely waterproof housing
  • break and crack resistant
  • displays results in large font
Brand Generation Guard
Model pending
Weight 6.4 ounces
Rating 4.6 / 5.0

1. Emay Storm BLT Smart Fertility

The Emay Storm BLT Smart Fertility syncs up to your iOS phone or Android device to keep track of your daily temperature readings and predict when you will be ovulating. Its contoured head makes it comfortable to hold in place to get an accurate reading.
  • one-touch activation
  • 3-month battery life
  • displays results in three minutes
Brand Emay Storm
Model WT2
Weight 2.9 ounces
Rating 4.6 / 5.0

How A Basal Thermometer Differs From A Regular One

If your doctor has recommended you purchase a basal thermometer, you might be thinking, "I already own a thermometer. Why do I need to spend money on a new one?" But that thermometer you've been putting under your tongue during flu season, or even in your tea to check its temperature before drinking it, can't do what a basal thermometer can. Regular thermometers check overall body temperature to identify or keep an eye on a fever. In other words, you use regular thermometers on sick bodies. Meanwhile, basal thermometers track the minuscule temperature changes that go on in a woman's healthy body throughout her menstrual cycle. Tracking these changes helps a woman find her fertile window. Basal thermometers can do this because as a woman's hormones change at crucial points in her cycle, her basal temperature rises.

You can use a regular thermometer anytime throughout the day, whereas you can only use a basal one first thing in the morning. Another important distinction between these two kinds of thermometers is that basal models are more accurate than regular ones. Basal thermometers can be accurate to a 0.1 degree Fahrenheit variance, while regular ones are often only accurate to a 0.2 degree variance. Detecting ovulation depends on picking up on the slightest of temperature changes, whereas monitoring a fever can mean tracking significant temperature fluctuations. A 0.1 degree fluctuation in a fever isn't cause for concern, but such a change in basal temperature can be significant for a woman trying to become pregnant.

Where exactly you place each of these thermometers is slightly different, too. You can use regular thermometers orally, anally, or under the arm pit. You use basal thermometers orally, anally, or vaginally. Interestingly enough, while you cannot use a regular thermometer to track ovulation, you can use a basal thermometer to track a fever, so long as it has a large enough range. If you only keep one type of thermometer in your home, you're better off having a basal one.

What To Look For In A Basal Thermometer

Since becoming pregnant can rely on you keeping track of each and every daily thermometer reading, it is often nice to have one with memory recall. When you turn these on, they'll show you what the previous day's reading was, so if you forgot to write it down, you'll still have it. This is extremely helpful considering that you take your basal temperature immediately when you wake up, before even getting out of bed, so there is a good chance you could dose back off to sleep while waiting for the reading. That's why having a thermometer that beeps loudly when it's done can also be useful. Since your hand-eye coordination isn't at its finest first thing in the morning, you may also want a thermometer with a thumb groove or non-slip grip, just to make sure you don't drop it before getting a reading.

When picking out a thermometer, you'll have to choose between digital and glass models. Digital thermometers certainly have their upsides, like offering very clear readings. You don't need to squint and hold a digital thermometer close to your eyes to see the temperature reading, the way you might with a glass one. Digital thermometers also don't run you the risk of broken glass all over your floor, and you don't need to shake down a digital thermometer each night, the way you do with a glass one. Just keep in mind that you need to replace the batteries of digital thermometers. If you fail to do so, their readings may become inaccurate as the batteries begin to die or they could even shut off mid-reading.

If you wake up very early in the morning, before the sun comes up, you may not want to turn on the lights and wake up your partner to get your reading or squat down by the night light. In this case, a thermometer with an illuminated screen can be very helpful. If you travel a lot, you may not want the TSA and the rest of the world to know you're trying to become pregnant. Fortunately, there are basal thermometers with discreet designs. On-the-go women might also appreciate some of the models with advanced technology that syncs up to smartphone apps, helping them track their temperature each day without the use of pen and paper.

Tips For Using Your Basal Thermometer

If you and your partner are ready to become pregnant, you don't want to wait any longer than necessary. Even if you are keeping up with ideal sexual behavior to become pregnant, if you aren't using your basal thermometer correctly, it could all be for nothing (besides the fun, of course). Make sure to take your temperature as close to the same exact time each day. Within the same half-hour window is ideal to ensure you get dependable readings.

Having to get a reading at the same time every day can actually be a good thing if you look at it right. You can use it as the perfect excuse for you to finally get more sleep, which is important when trying to get pregnant. Studies have found that not sleeping enough can interrupt a woman's menstrual and ovulation cycle, and make it harder to become pregnant. So, go to bed and get up at the same time each day, and do your best to create a relaxing sleep environment through the use of sound machines, sleep masks, and other accessories.

It's also important that you use your thermometer the same way each time: orally, vaginally or anally. Each of these orifices can have slightly different temperatures. None are right or wrong, but it's important you're only tracking the readings from one of them. Using all of these tips in conjunction with one another can put you and your partner on the path to becoming parents more quickly.



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Last updated on October 03, 2017 by Brett Dvoretz

A wandering writer who spends as much time on the road as behind the computer screen, Brett can either be found hacking furiously away at the keyboard or perhaps enjoying a whiskey and coke on some exotic beach, sometimes both simultaneously, usually with a four-legged companion by his side. He hopes to one day become a modern day renaissance man.


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