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Fertility2Family Basal Ovulation Thermometer showing a two decimal 0.01 degree Celsius BBT reading
Digital basal ovulation thermometer held for BBT fertility tracking in Australia
BBT thermometer on a bedside table ready for waking temperature tracking each morning
Oral basal thermometer used under the tongue for basal body temperature charting
Basal body thermometer with a handwritten BBT chart for ovulation tracking
Digital basal thermometer reading recorded next to a BBT chart notebook
Fertility2Family BBT thermometer used with a cycle tracking app in Australia

Basal Ovulation Thermometer

★★★★★
5.0/5

Buy the Fertility2Family Basal Ovulation Thermometer online in Australia for at-home basal body temperature (BBT) charting when trying to conceive. This digital basal thermometer shows waking temperature to two decimal places in 0.01°C steps, with memory recall, a beep alert, auto shut-off and a protective storage case, so morning temperature tracking stays simple and repeatable every cycle.

Australia Post tracked shippingPlain outer packaging

Reusable BBT thermometer

One thermometer for every cycle

In stock
$15.00GST included

The Basal Ovulation Thermometer is a low-cost reusable option for daily waking-temperature tracking. One affordable thermometer covers your BBT morning routine across cycle after cycle, with no strips or refills to buy.

  • Two decimal place display with 0.01°C readings for small waking-temperature shifts
  • Memory recall of your last reading, beep alert and auto shut-off
  • 32.00°C to 42.99°C measurement range with Lo°C and Hi°C out-of-range indicators
  • Suitable for oral under-tongue use, or one consistent measurement method as directed

What comes with the Basal Ovulation Thermometer

  • 1 digital basal ovulation thermometer
  • Protective storage case
  • Instructions for use
  • LR41 button battery

Buy this thermometer if you want: an affordable, reusable BBT thermometer with everything included to start basal body temperature charting at home.

Tracked shipping, plain outer packaging, storage case and basal thermometer instructions included.

Basal thermometer instructions included

Step by step guidance covers when to take your BBT reading, how to use the thermometer and how to record your chart clearly.

Australia-based support

Questions before or after you buy? Local support is available for product use, charting basics and general order help from an Australian-owned business since 2009.

Why customers choose a two decimal BBT thermometer

Basal body temperature charting depends on small daily changes. A 0.01°C display makes small waking-temperature shifts easier to see than a standard fever thermometer.

Australia Post tracked shipping

Orders are sent Australia-wide with tracking through Australia Post so you can follow delivery progress after dispatch.

Plain outer packaging

Orders are packed in plain outer packaging, so the outside does not display product details.

Why choose this digital basal thermometer?

The Basal Ovulation Thermometer suits anyone trying to conceive who wants a simple fertility thermometer for morning temperature tracking, with the two decimal detail that basal body temperature charting relies on.

0.01°C detail

Two decimal place readings show the small waking-temperature shifts that matter on a BBT chart, from a 32.00°C to 42.99°C measurement range.

Built for mornings

Memory recall of your last reading, a beep alert when the reading is ready and auto shut-off make the half-asleep morning routine easier to repeat.

Reusable value

One reusable BBT thermometer with a storage case covers every cycle, keeping temperature charting a low-cost layer of your trying-to-conceive routine.

How to use a basal thermometer each morning

Keep the thermometer in its case beside your bed. Take your basal body temperature immediately after waking from your main block of sleep, before getting out of bed, eating, drinking or checking your phone, and at around the same time every morning. Use one consistent measurement method as directed, such as oral under-tongue use, wait for the beep, then record the reading, cycle day and anything unusual like broken sleep, illness, alcohol or travel. Clean the probe tip after use as described in the basal thermometer instructions and store it dry in the protective case. Full directions are included with every order.

Download the printable BBT chart (PDF)

Basal thermometer vs regular thermometer

A regular fever thermometer and a basal body thermometer answer different questions. This comparison helps you pick the right tool without leaving the product you came for.

Basal thermometer

Made for cycle tracking. Two decimal 0.01°C readings show the small daily shifts that BBT charting depends on, with memory and a bedside-friendly routine.

Regular thermometer

Made mainly for fever checks. A one decimal display may not show enough detail for basal body temperature charting across a cycle.

Use both together

Many customers pair the basal thermometer with ovulation tests: LH tests help before ovulation, while BBT helps you review the pattern afterwards.

Want the full charting guide? View the BBT charting guide or add ovulation tests for fertile-window timing.

Basal Ovulation Thermometer FAQs

What is the Basal Ovulation Thermometer?
The Fertility2Family Basal Ovulation Thermometer is a digital basal thermometer designed for basal body temperature (BBT) charting when trying to conceive. It displays waking temperature to two decimal places in 0.01°C steps, recalls your last reading from memory, beeps when the reading is ready and turns off automatically. It is a reusable BBT thermometer for daily home use across your cycle.
How do I use the Basal Ovulation Thermometer?
Take your reading as soon as you wake, before getting out of bed, eating, drinking or moving around. Place the probe as directed in the included instructions, wait for the beep, record the temperature on your BBT chart, then clean the tip and return the thermometer to its case. Use the same measurement method at a similar time each morning for the clearest chart.
What comes with the Basal Ovulation Thermometer?
Each Basal Ovulation Thermometer pack includes the digital basal thermometer, a protective storage case, full instructions for use and an LR41 button battery. Everything you need to start morning temperature tracking is in the box, and a printable BBT chart is available to download from this page.
Does this thermometer show two decimal places and 0.01°C readings?
Yes. This is a two decimal basal thermometer that displays readings in 0.01°C steps, for example 36.42°C. Basal body temperature charting relies on small daily changes, so the extra decimal place makes small waking-temperature shifts easier to see than on a standard one decimal thermometer.
Does the basal thermometer have memory?
Yes. The thermometer stores your most recent reading in memory, so you can check the last result if you fall back asleep or want to record it later in the morning. For the most reliable chart, write each reading down or enter it into your tracking app soon after testing.
Does the basal thermometer beep?
Yes. The thermometer has a beep alert that sounds when the reading is complete, so you know when it is finished without watching the display.
Does the basal thermometer turn off automatically?
Yes. The thermometer has an auto shut-off function that powers the unit down after use, which helps conserve the battery between readings.
Does the thermometer come with a case?
Yes. A protective storage case is included. Keeping the thermometer in its case beside your bed protects the probe, keeps it clean and makes it easy to reach for your first reading of the morning or when travelling.
What temperature range does the thermometer measure?
The measurement range is 32.00°C to 42.99°C, displayed in 0.01°C steps. Typical waking basal body temperatures sit well within this range.
What does Lo°C mean on the thermometer?
Lo°C appears when the measured temperature is below the 32.00°C minimum of the measurement range. This often happens if the probe was not positioned correctly or the reading started before the probe warmed up. Reposition the probe as directed and test again.
What does Hi°C mean on the thermometer?
Hi°C appears when the measured temperature is above the 42.99°C maximum of the measurement range. Check the probe placement and repeat the reading. If you feel unwell or a fever is possible, a genuine high temperature should be checked and discussed with a healthcare professional.
What battery does the basal thermometer use and how do I replace it?
The thermometer uses an LR41 button battery, which is included. When the display shows the low battery symbol or becomes faint, open the battery compartment as shown in the included instructions, replace the LR41 battery with the correct side facing up, and close the cover. LR41 batteries are widely available in Australian supermarkets and hardware stores.
Can I use this thermometer orally or under the tongue?
Yes. Oral under-tongue use is a common method for BBT charting with this thermometer. Place the probe under the tongue as directed, close your mouth and wait for the beep. Whichever method you choose, keep it the same every morning.
Can I use this thermometer vaginally or rectally?
Follow the directions for use for the measurement methods described in the included instructions. The most important rule for BBT charting is consistency: choose one method and use it every day, because switching between methods mid-cycle can distort your chart.
When should I take my BBT reading?
Take your basal body temperature immediately after waking from your main block of sleep, before getting out of bed, and at around the same time each morning. Mark disrupted sleep, illness, alcohol, travel or unusual wake times on your chart, as these can affect the reading.
Can this thermometer confirm ovulation?
No home thermometer can confirm ovulation. BBT charting is retrospective: a sustained higher-temperature pattern after ovulation can be consistent with an ovulatory cycle, but it does not prove the exact day ovulation occurred. Ovulation tests detect the LH surge before ovulation is likely, which is why many people use both tools together.
Can this thermometer detect pregnancy?
No. A basal thermometer cannot detect or confirm pregnancy. Some people notice that temperatures stay higher after ovulation, but only a pregnancy test can check for hCG. If your period is due or late, use a pregnancy test at the appropriate time.
How do I clean the basal thermometer?
Clean the probe tip before and after each use as described in the included instructions, then dry it and return the thermometer to its protective case. Do not submerge the whole unit in water and do not boil or steam it, as this can damage the electronics.
Is this thermometer reusable and can I use it every cycle?
Yes. This is a reusable basal thermometer designed for daily use across cycle after cycle. One thermometer covers your whole trying-to-conceive routine, which keeps BBT charting a low-cost, low-waste layer of home fertility tracking.
Can I use this thermometer with ovulation tests?
Yes, and many customers do. Ovulation tests help identify the LH surge before ovulation, while the basal thermometer records waking temperature so you can review the pattern after ovulation. Used together across a cycle they answer different questions, before and after ovulation.
How is the basal thermometer shipped and what payment options are available?
Orders are sent Australia-wide with Australia Post tracked shipping in plain outer packaging, so the outside does not display product details. Available payment options, including Afterpay, are shown at checkout. If anything arrives faulty, contact Fertility2Family support and the team will help with a replacement or return.
Why buy the Basal Ovulation Thermometer from Fertility2Family?
Fertility2Family is an Australian-owned fertility testing business established in 2009. This basal ovulation thermometer is sold with clear instructions, a printable BBT chart, local Australian support and discreet tracked delivery, and it is priced as a simple reusable option so temperature charting stays affordable across every cycle.

Building a fuller routine? Compare ovulation tests, view pregnancy tests or read the BBT charting guide.

Customer reviews for the Basal Ovulation Thermometer

Australian customers review this basal ovulation thermometer for two decimal accuracy, daily BBT charting, ease of use, value and cycle tracking alongside ovulation tests.

Customer reviews reflect individual experiences. BBT charting can support cycle awareness, but it cannot confirm pregnancy, diagnose fertility concerns or prove the exact day ovulation occurred.

★★★★★
5.0/5
★★★★★

ReviewingBasal Ovulation Thermometer

Very accurate and a great tool to track ovulation

I purchased a Major Fertility Pack to have a basal thermometer, ovulation strips and pregnancy strips. I use the thermometer every day and have been able to accurately track when ovulation has happened for months now.

Sar001

★★★★★

ReviewingTwo decimal basal thermometer

Accurate effective thermometer!

Accurate to 2 decimal places. Easy to use. The most effective way for us to track ovulation, especially as hormonal tracking did not work for us- and now a handy thermometer for our little one!

Bon, NSW

★★★★★

Reviewing2 decimal BBT thermometer

Very accurate- precise and fast

The Basal thermometer I have found to be very precise and super accurate because it has the 2 decimal places.

Baby BK, SA

★★★★★

ReviewingDigital basal thermometer

This thermometer is great- exactly what I was after

I have been using this thermometer daily for the last 6 months to track my ovulation cycle and have found it to be great! Accurate & consistent, also easy to use.

Kimberley

★★★★★

ReviewingDigital BBT thermometer

Very accurate and helps me know when I ovulate

I brought one of the packs which came with ovulation, pregnancy tests and BBT. Instructions are easy I am still learning how to track my BBT but has helped me confirm that I have ovulated which is nice to know.

Anniyah P., VIC

★★★★★

ReviewingFertility thermometer

Very reliable product

I have been using this thermometer for a while now to track my Basal temps and it has made it so easy to keep track of whats happening inside my body and when I have ovulated.

Bianca, VIC

★★★★★

ReviewingOvulation thermometer

It's great and made pinpointing easier

I've used this Thermometer for 5 months and it has made it easier to read my body so I can know when I am going to ovulate.

Melissa, NSW

★★★★★

ReviewingAffordable basal thermometer

Just what we needed

Thermometer works great, have never had a problem with it. I highly recommend this product and Fertility2Family. Very affordable too.

Kia, WA

★★★★★

ReviewingTrying to conceive thermometer

Knowing when I was ovulating became easy

Then I heard about these basal thermometers so I started using them and charting my results and then I conceived in 4 cycles.

Rachel

★★★★★

ReviewingDigital BBT thermometer

Love it!

My naturopath recommended this to me, it has been so great to track my ovulation. Accurate and easy to use.

Cait, QLD

Using the Basal Ovulation Thermometer with confidence

Medically reviewed by Evan Kurzyp, RN, AHPRA Reg. NMW0002424871.

General information only. Always read the label and follow the directions for use. Basal body temperature charting supports cycle awareness but does not confirm pregnancy, diagnose fertility concerns or prove the exact day of ovulation. Customer reviews reflect individual experiences and are not medical evidence. BBT is retrospective, so ovulation tests are better suited to identifying the fertile window before ovulation. See your GP or fertility specialist if charts are repeatedly unclear, cycles are very irregular or symptoms concern you.

Last reviewed: April 2026. Next review: April 2027.

Basal Ovulation Thermometer
$15.00