Lunara’s period calculator predicts your next period based on your last period start date and cycle length, helping you stay prepared.
Many people experience symptoms like cramps, breast tenderness, and mood swings. Tracking these in the Lunara app can help you anticipate them.
Even with irregular periods, logging cycle dates and symptoms regularly can help identify patterns to discuss with your doctor.
This calculator offers an estimate, not a guarantee, as various factors can influence your cycle. It should not be used as a contraceptive method.
Your body follows a beautiful rhythm—one that the menstrual cycle calculator helps you track with ease. Your menstrual cycle has two main phases: the follicular phase and the luteal phase, with two major milestones—your period and ovulation. Whether you’re using a period calculator, a menstrual tracker, or just getting started with period tracking, understanding this rhythm helps you sync with your body.
The follicular phase begins on day one of your period. This is when your uterus naturally sheds its lining. As estrogen starts rising, your body begins building that lining back up in preparation for a potential pregnancy. Follicle-stimulating hormone (FSH) encourages tiny follicles in your ovaries to grow—one of which will become a mature egg, ready for ovulation mid-cycle.
Use a period cycle calculator or menstrual cycle tracker to mark these shifts. These tools don’t just count days—they help you understand your internal rhythm.
Use a period cycle calculator or menstrual cycle tracker to mark these shifts. These tools don’t just count days—they help you understand your internal rhythm.
After ovulation, your most fertile window, your body enters the luteal phase. Progesterone rises to prep your uterine lining for implantation. If no pregnancy occurs, hormone levels drop, and your next period begins.
With a premenstrual calculator or a period tracker online, you can anticipate symptoms like bloating, mood swings, or breast tenderness. These tools can be game-changers in understanding your unique cycle cues.
Not sure how to count your menstrual cycle? It’s simple: start from the first day of your last period and count until your next period begins—that’s your cycle length.
For an accurate prediction, try Lunara’s next period calculator or last menstrual period calculator. Lunara’s accurate period calculator helps you estimate your next cycle based on your data, and improves over time with use. The more you log, the smarter it gets.
Prefer digital tools? Use our period tracker online free—your very own menstrual cycle calendar, always just a tap away. It's one of the best period trackers designed to adapt to you.
Your menstrual cycle is more than just a countdown to your period—it’s your body’s monthly report card. Regular period tracking reveals patterns in your mood, cravings, energy levels, and PMS symptoms. It helps you spot when something’s off and when to consult your doctor.
Using lunara’s menstrual calculator, period tracker free, or even a period tracking calculator lets you tap into your natural rhythms. It’s not just about dates—it’s about empowerment.
At Lunara, we believe in giving you the tools to track your period, decode your cycle, and feel in control—every step of the way.