Basal Body Temperature Charting, The Ultimate Guide to Conceive Faster

Basal body temperature (BBT) charting is a non-invasive, inexpensive, and easy way to detect ovulation and conceive faster. It’s a method that is widely recommended by gynecologists and reproductive endocrinologists to understand your menstrual cycle patterns and determine your most fertile days. In this article, we’ll cover everything you need to know about BBT charting, including its advantages, how to measure BBT, and how to take and chart your BBT.

What is BBT?

BBT is your body temperature at complete rest. It is influenced by various factors, including hormones, and can change throughout the menstrual cycle. When you ovulate, the hormone progesterone causes your temperature to rise and remain elevated until your period starts, at which point the hormone drops, causing your temperature to decrease.

To accurately check your BBT, you must take your temperature in the morning before getting out of bed or moving around, using a thermometer with accurate readings.

Advantages of BBT Charting

BBT charting offers several benefits, including:

  • Identifying your ovulation patterns
  • Timing sex for conception
  • Detecting fertility problems, such as ovulation or luteal phase issues
  • Providing information for a healthcare provider to make an infertility diagnosis
  • Detecting early signs of pregnancy (potentially)

Choosing a BBT Chart

There are several options for charting your BBT, including sample charts in fertility books, fertility awareness software, or making your own graph. Many prefer using digital tools because they reduce the chance of human error and provide a more comprehensive record.

How to Measure BBT

To start measuring your BBT, you’ll need a thermometer and a chart to record your temperature. Use the same thermometer throughout the cycle, and take your temperature at the same time every morning, avoiding any movement, bathroom trips, or lack of sleep.

Here is an example table for Basal Body Temperature Charting:

Date Time Body Temperature (°F)

This table can be used to record your basal body temperature each day, including the date and time of measurement, and the corresponding temperature reading in degrees Fahrenheit. You can fill in this information for several weeks or months to create a chart of your basal body temperature over time.

When to Start Charting

It’s best to start charting your BBT on the first day of your period and continue taking your temperature every morning throughout the entire cycle. After some experience, you may be able to skip the first few days of your period and start taking your temperature around day five or seven.

To interpret the results of your Basal Body Temperature Charting, there are a few key steps you can follow:

  1. Identify the first day of your menstrual cycle: This is typically considered the first day of your period, when bleeding begins.

  2. Track your temperature: Take your basal body temperature (BBT) first thing in the morning before you get out of bed, and record it in the chart. Do this every day for several months to establish a pattern.

  3. Look for patterns: Over time, you may notice that your BBT rises slightly after ovulation, which indicates that you have ovulated. This rise in temperature is usually about 0.4 to 1.0°F is equal to approximately 0.22°C to 0.56°C. and should last for at least three days.

  4. Confirm ovulation: You can confirm ovulation by looking for additional signs, such as an increase in cervical mucus or a positive ovulation predictor kit.

  5. Interpret the results: By tracking your BBT over time, you can determine your average cycle length, your fertile days, and even identify potential fertility issues.

It’s important to remember that BBT charting is not always a reliable indicator of fertility, especially if you have irregular menstrual cycles or if you have a medical condition that affects your temperature. If you are having trouble conceiving, it’s always a good idea to talk to your doctor to get an accurate diagnosis and appropriate treatment.


BBT charting is a simple, effective, and low-cost way to detect ovulation and conceive faster. With the right tools, timing, and habits, you can use BBT charting to understand your menstrual cycle and increase your chances of conception.


Originally posted 2023-02-10 19:33:06.

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