Free cycle tool

Printable Period Tracker

Paper needs no account, no battery and no permission. Choose a month grid or a whole year on one page, set the key, and print exactly what you see below.

Runs entirely in your browser. No account, no email, and nothing you type is sent anywhere.

Build the sheet
Layout

A calendar month, one box per day, big enough to mark.

Version

The full sheet: flow, symptoms, and a temperature row if you want one.

Dates
Week starts
Flow key

Four levels, light to heavy. On paper they run from an open box to a filled one, so the key still reads printed in black and white. Rename any of them.

Extra rows
Symptoms on the sheet

Leave one blank to print an empty row and name it by hand. Six is the most that fits.

Printing this one? Aura, from the same team, makes a mood sheet the same way — a month of boxes or a whole year, printed and filled in by hand. Different thing to record, same paper.

Paper records what happened. It does not predict. Nothing on this sheet is worked out for you, and that is the point — the value is in the entries you make, read back over three or four months. The one entry that matters most is the first day of bleeding. Every cycle number anybody ever quotes at you is counted from it.

Cycles vary, and the first years vary most. A few days either way is ordinary. ACOG says it can take six years or more after periods start for a cycle to settle into a regular pattern, so a teenage sheet full of gaps is a record of something normal rather than a problem. Write down what actually happens and let the pattern arrive on its own.

This is not medical advice and it is not contraception. A printed calendar cannot see ovulation and cannot be made to. Worth talking to a doctor if your periods are irregular or your usual pattern changes, if you miss three in a row, or if periods have not started by the age of 15 — those are the NHS's own thresholds, and they are a conversation, not an alarm.

How this is worked out

  1. The sheet is drawn at true paper size — 210 × 297 mm for A4, 8.5 × 11 in for US Letter — with its own margin built in, so what is on screen is the file that comes out of the printer.
  2. The flow key runs light to heavy as an open box through to a filled one, so the sheet still reads printed in black and white.
  3. The "first years" version keeps the same grid and simplifies the labels: no fertility language, no basal temperature row, and a key built around what the first years of periods actually look like — which, per ACOG, can take six years or more to settle into a pattern.
Questions

The short answers

Press "Print or save as PDF" and choose "Save as PDF" as the destination in the print dialog. Set margins to None and turn on background graphics if the colour key comes out blank. There is no email step and no download wall — the file is made by your own browser.
There is a version made for it. Switch the sheet to "First years" and the labels change: plain flow and symptom words, space to note how you felt, and nothing about fertility on the page. ACOG says it can take six years or more after periods start for a cycle to settle into a regular pattern, so the sheet is built to record what happens rather than to predict what comes next.
The first day of bleeding is the one entry that matters most — every cycle number is built from it. After that, flow, any pain, and a word about mood or sleep will tell you more over three months than any single day tells you now. If you are charting temperature, add it at the same time every morning before getting up.
Yes. The paper switch redraws the sheet at the right size and sets the print page size to match, so neither one comes out scaled or split across two pages.
Because paper cannot be synced, breached or subpoenaed, and it does not need you to trust anybody. Some people also simply think better on paper. If you would rather have the same record on a phone, Athena keeps it on the device with no account — but a printed sheet is the version nobody else can reach.
Yes — tick the basal temperature option and a row appears under the grid. For a proper chart with a temperature scale, use the printable BBT chart instead; it is built for the daily reading and the coverline.

Where this comes from

  1. NHS (2025). Periods. https://www.nhs.uk/conditions/periods/
  2. NHS (2025). Starting your periods. https://www.nhs.uk/conditions/periods/starting-periods/
  3. American College of Obstetricians and Gynecologists (2024). Your First Period (Especially for Teens). https://www.acog.org/womens-health/faqs/your-first-period
  4. American College of Obstetricians and Gynecologists (2015). Menstruation in Girls and Adolescents: Using the Menstrual Cycle as a Vital Sign. https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2015/12/menstruation-in-girls-and-adolescents-using-the-menstrual-cycle-as-a-vital-sign
  5. Eunice Kennedy Shriver National Institute of Child Health and Human Development (NIH) (2025). Menstruation: Condition Information. https://www.nichd.nih.gov/health/topics/menstruation/conditioninfo

Every link above was checked when this page was last updated. Athena is not affiliated with any of these organisations, and none of them has reviewed this page. Nothing here is medical advice.

Go deeper

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Next door

Printable BBT Chart

Graph paper for a cycle: a temperature grid in °C or °F, a row for the coverline, and space for the notes that make a chart readable later.

Open it

Period Calculator

Your last period plus your usual cycle length, and the next few months laid out on the moon ring — with the spread you should actually expect.

Open it

Cycle Length Calculator

Log a few period start dates and read your own numbers: average, shortest, longest, and how much the whole thing moves.

Open it
The app this site is for

Athena keeps all of this on your phone.

The calculators here forget you the moment you close the tab. Athena is the same arithmetic living on your device — the moon ring, an honest calendar with ranges instead of false precision, and a database that never leaves the phone because there is no account and no server behind it.

In development for iPhone and Android. Not released yet — when it is, it will be on this site.

What Athena is