Temperature History Comparison
Compare yearly average temperature, highs, lows, hot days and precipitation for cities using Open-Meteo historical weather data.
OpenCalculate your ovulation date and fertility window.
Enter the start date of your last menstrual period and your average cycle length to calculate your estimated ovulation day, fertility window, and related calendar dates.
The result appears here after the calculation.
Waiting for a result.
When values are confirmed, the calculation result will appear here.
This tool generates approximate dates based on a regular 21-35 day menstrual cycle assumption. Cycle irregularities, breastfeeding, hormonal treatments, illness, or the use of contraceptive methods may alter the results; medical decisions should be made in consultation with a gynecologist.
Guide
The ovulation period is an important process for women to determine their fertile days. This calculator helps you estimate your ovulation date using the start date of your last menstrual period and the length of your menstrual cycle.
The calculation of the ovulation period is based on the start date of your last menstrual period and the length of your menstrual cycle. While the typical cycle lasts 28 days, some women may have cycles ranging from 21 to 35 days. Therefore, it is important to accurately determine your cycle length.
The ovulation date you obtain from the calculation will be presented along with your fertility window. The fertility window is defined as a few days before and after the ovulation date. During this time, your chances of conceiving are highest.
Tracking your ovulation period can be beneficial for women planning a pregnancy. Additionally, you can learn your estimated due date using the due date calculator.
After calculating your ovulation period, you can track your pregnancy process using the pregnancy calculator. You can also better manage your menstrual cycle with the menstrual cycle calculator.
Temperature History Comparison
Compare yearly average temperature, highs, lows, hot days and precipitation for cities using Open-Meteo historical weather data.
OpenAir Quality History Comparison
Compare yearly air quality trends for various cities.
OpenCity Climate Profile
Summarize temperature, precipitation, air quality, elevation, flood history, and 2050 projection for a selected city.
OpenCity Climate Comparison
Easily compare the climate of multiple cities based on various factors.
Open