Accurate Period Calculator

Period Calculator – Track Your Cycle & Ovulation

Your Cycle Insights

Select the first day of your last menstrual period.

Typical cycle length is 20-45 days. (e.g., 28 days)

About This Calculator

Our Period & Ovulation Calculator is designed to help you understand your menstrual cycle better. By inputting the first day of your last period and your average cycle length, you can predict your next period, identify your fertile window, and estimate your ovulation day. This can be a valuable tool for family planning, tracking your health, or simply staying informed about your body’s natural rhythms.

Remember, this calculator provides estimations based on averages. Actual cycle lengths and ovulation days can vary due to individual factors, stress, diet, and other influences. For precise health advice, always consult with a healthcare professional.

Frequently Asked Questions

How accurate is this calculator?

This calculator provides estimations based on the data you provide (last period date and average cycle length). For individuals with regular cycles, the predictions are generally quite accurate. However, cycle lengths can vary, so it’s always best to use this as a guide and not a definitive medical tool.

What is a fertile window?

The fertile window is the period of time during a woman’s menstrual cycle when she is most likely to conceive. It includes the day of ovulation and the few days leading up to it. Sperm can live in the female reproductive tract for up to 5 days, and an egg lives for 12-24 hours after ovulation.

What if my cycle is irregular?

If your cycle is irregular, the predictions from this calculator may be less accurate. It’s recommended to track your cycle for several months to determine your average cycle length, or consult a healthcare professional for personalized guidance.

© Period Calculator. All rights reserved.

Disclaimer: This tool is for informational purposes only and not a substitute for professional medical advice.