Health & Fitness

What Is the Luteal Phase?

The luteal phase is the part of the menstrual cycle between ovulation and the start of the next period. It typically lasts about 12 to 14 days, and its length is relatively consistent for a given person, while the phase before ovulation varies more. Calendar methods use it to estimate ovulation by counting back from the expected period.

Cycle Phases

The follicular phase runs from the first day of menstruation to ovulation; the luteal phase runs from ovulation until the next period begins.

🧮 Calculate It Yourself

Put Luteal Phase into practice with this free calculator — no sign-up, nothing stored.

🔗 Related Terms

More Health & Fitness Terms

📖 Browse all glossary terms or explore all free calculators.

Last updated: September 27, 2026. This definition is for general educational purposes only. It is not financial, investment, tax, legal, or medical advice, and it does not recommend any product or course of action. For decisions about your own situation, consult a qualified professional.