Basal Body Temperature (BBT) Calculator

This **basal body temperature calculator** helps women track ovulation and fertile days. By entering your daily morning temperature, you can identify patterns using this **BBT calculator online** and improve chances of pregnancy.

Enter Your Daily BBT (°C) Cycle Day

How This Calculator Works

The **ovulation calculator using BBT** works like this:

• Before ovulation → body temperature is slightly lower (36.1°C – 36.4°C).
• After ovulation → body temperature rises (36.5°C – 37.0°C).
• Tracking daily temperatures creates a **fertility BBT chart calculator** to highlight your fertile window.

By using this tool, you can **track ovulation with BBT** naturally and increase your chances of conception.