Period Tracker

How to Track Your Period Online Without an App

You don't need to install anything to keep track of your period. A notebook works, and so does a website you can open on your phone or computer. What matters is writing down the same few things every cycle.

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What to write down each cycle

Start with two dates: the day your period starts and the day it ends. The start date matters most, because every cycle is counted from it.

If you want more detail, add these when they come up:

  • How heavy your flow is each day
  • Cramps, headaches or other symptoms
  • Your mood
  • Spotting between periods
  • Anything unusual, such as illness, travel, a lot of stress or a big change in exercise

Those last notes are useful because stress, weight changes and exercise can all change when a period comes.

Using a website instead of an app

A period tracking website works in any browser, so there is nothing to download and nothing taking up space on your phone. You can open it on your phone at night and on a laptop during the day and see the same thing.

With our free period tracker, you can get dates without an account. Enter the first day of your last period and your usual cycle length, and you'll see your next period, ovulation and fertile window right away.

If you want to keep a record, a free account lets you log each day with flow, symptoms, moods and notes. Your history syncs across devices, and you can get email reminders before your next period. Accounts are for people 13 and older.

How to count your cycle length

A cycle is counted from the first day of one period up to the first day of the next. If your period started on March 3 and the next one started on March 31, that cycle was 28 days long.

Do this for a few cycles and you'll see your usual length and how much it moves around. The period cycle length calculator can do the counting for you.

Once you log 3 to 4 periods in a free account, the tracker uses your own cycles for predictions instead of the number you typed in. How our predictions work explains what each date means.

When your notes are worth showing a doctor

A few months of notes make a doctor's visit easier, because you can answer questions with dates instead of guesses. The NHS suggests speaking to a GP if your periods are irregular or your usual pattern changes, and seeing one if your period lasts longer than 7 days.

Bring your dates, how long each period lasted and any symptoms you noticed.

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