Empowering Women Through
Evidence-Based Algorithms
SheCalc was created with a clear goal: to make clinically-informed menstrual and gestational health calculators accessible, accurate, and completely private for everyone.
Clinical Standards
Our algorithms follow recognized obstetrics standards such as Naegele’s Rule and ACOG Committee guidelines rather than arbitrary estimates.
Zero Data Storage
Your reproductive health is deeply personal. All calculations happen inside your local browser without transmitting logs or dates to servers.
Distraction-Free UX
Clean typography, responsive sliders, quick inputs, and instant updates let you view your timeline and milestones in seconds.
Clear, transparent answers without paywalls or invasive profiling.
Finding a straightforward period or pregnancy calculator often means dealing with invasive sign-up prompts, heavy advertisements, or vague mathematical estimates. We created SheCalc as a modern, reliable web alternative.
Whether you want to calculate your fertile window, prepare for your next cycle, or track weekly pregnancy milestones, SheCalc gives you immediate, uncompromised clarity right inside your browser.
Ready to explore our calculators?
Select a tool to compute your menstrual cycle or pregnancy timeline in seconds.