Menstrual Cycle Length Calculator
Calculate your menstrual cycle length.
Your ad blocker is preventing us from showing ads
MiniWebtool is free because of ads. If this tool helped you, please support us by going Premium (ad‑free + faster tools), or allowlist MiniWebtool.com and reload.
- Allow ads for MiniWebtool.com, then reload
- Or upgrade to Premium (ad‑free)
About Menstrual Cycle Length Calculator
The Menstrual Cycle Length Calculator is used to calculate your menstrual cycle length based on the first day of your last two menstrual period.
Many people believe the average menstrual cycle takes 28 days, but a large study of more than 30,000 cycles from more than 2,300 women showed that the mean cycle length was 29.1 days. The normal menstrual cycle ranges from 25 to 35 days. The variability of menstrual cycle lengths is highest for women under 25 years of age and is lowest, that is, most regular, for ages 35 to 39. Subsequently, the variability increases slightly for women aged 40 to 44.
Reference this content, page, or tool as:
"Menstrual Cycle Length Calculator" at https://MiniWebtool.com/menstrual-cycle-length-calculator/ from MiniWebtool, https://MiniWebtool.com/