Cycle & Phase Explainer

How a typical cycle is shaped

Move the slider to your usual cycle length and see how the phases generally fall. This is a learning picture, built on averages.

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Your usual cycle length

28 days

Menstruation

Follicular phase

Ovulation (around)

Luteal phase

Cycles that are very short, very long or irregular don't fit an average model well — this picture is just for general understanding.

This tool is for general education only. It is an average-based illustration — it does not predict your ovulation or fertile window, and is not a method of contraception or conception. Cycles vary from person to person and month to month. For reliable guidance, speak with your GP.