# Period Tracker Guides

> Plain-language guides from Period Tracker on how our predictions work and how to get more from tracking your cycle.

Page: https://period-tracker.org/guides/

Short, practical guides to help you understand your dates and track your cycle with confidence.

-   ## [How to Track Your Period Online Without an App](https://period-tracker.org/guides/track-period-online/)
    
    A simple way to track your period in a web browser: what to write down each cycle, how to count your cycle length and when your notes help at a doctor's visit.
    
-   ## [When Will My Next Period Start?](https://period-tracker.org/guides/when-is-my-next-period/)
    
    How to work out when your next period will start, with a worked example, why periods come early or late and when a late period is worth checking.
    
-   ## [How to Track Irregular Periods](https://period-tracker.org/guides/track-irregular-periods/)
    
    How to keep track of periods that don't follow a set pattern: what counts as irregular, how to find your average and range and when to see a doctor.
    
-   ## [Your First Period: What to Expect and How to Track It](https://period-tracker.org/guides/first-period/)
    
    What a first period is usually like, why early cycles are often irregular, how to keep track and when to talk to a doctor. Written for teens and parents.
    
-   ## [How Our Period Predictions Work](https://period-tracker.org/guides/how-predictions-work/)
    
    What each date in Period Tracker means, why your predictions get closer to your real pattern as you log and why every date is an estimate.