Period Calculator

Wondering, "When will I get my period?" Always knows! Our easy tracking tool, the Period Calculator, helps to map out your cycle for months. Plan a period-free beach trip or a big event like a wedding using the period cycle calculator. Or track your Fertility time if you're trying using menstrual cycle calculator.

Ready? You’re three quick questions away from getting your custom menstrual cycle calculator.

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Period days

It's that time again. As the lining of your uterus sheds, your period starts. This is also the official start of your cycle. Want to know more? Here are answers to Ten common period questions. Use the Always period calculator and make sure you're stocked up on Always pads!

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If you want to know more about how to use the Period Calculator check out our FAQs:


What is a period calculator?

Always be prepared for your upcoming periods and know in advance when you’ll be ovulating thanks to the effortless Always period calculator.

Never be surprised when it’s that time of the month as period calculator ensures you know exactly when to expect your next period.

Keeping monthly calculations of your period and other symptoms help you recognize when you’re ovulating and anticipate your period so you can feel fresh and prepared every day of your menstrual cycle.


How to use our period calculator?

Simply answer the following 3 questions to get started:

  1. When did your last period start?
  2. How long did your period last?
  3. How long is your menstrual cycle?

Now, click on the „Track it“ button and you are all set!

Always Period calculator will inform you when is your next period due and also provide info regarding useful information about products that you might like.


How the calculator calculates the menstrual cycle?

Period calculator predicts the time to expect your next period by analyzing your period history data. Every girl and every cycle is unique so it's important to remember that this the best estimate of your menstrual cycle. Better to feel prepared than surprised, no?

The average period lasts up to 28 days, but it’s completely normal to have a slightly longer or shorter cycle. No need to worry as it’s all very natural. Considering that, period calculator is not 100% accurate for girls who have irregular periods, as its extremely complicated to predict the date of the next period in those cases, however, it can help give you an overview of just how irregular your period is and therefore have more of an idea of what to expect in future.


Why use a period calculator to predict your cycle?

Knowing when to expect your next period gives you freedom in making plans!

We all want to enjoy our vacations as much as possible and deserve the carefree feeling, just relax on the beautiful beach and do not worry about having your period.

The period calculator gives you the freedom to know when to have a pad or pantyliner in your handbag and enjoy the feeling of never-ending self-confidence in your daily life.


How a menstrual cycle usually looks

All menstrual cycles are unique, but we do have some things in common:


Premenstrual Syndrome, otherwise known as 'PMS'. Commonly you could experience symptoms of PMS such as headaches, bloating, irritability and generally feeling more emotional than normal. We all know how it feels!

Maybe you have that 'my period is coming soon' feeling? Usually, you can experience PMS 3 days prior to having your period. Keep in mind that your diet, caffeine and stress can actually increase the intensity of PMS symptoms.


Day 1 is the start of your cycle and when bleeding begins. Maybe you have wondered why do we bleed? As your egg wasn’t fertilized, your womb lining sheds and leaves your body, which explains the blood.

Periods generally last between 4 and 7 days, with the heaviest days being the first and second. An average cycle lasts 28 days but can range from as few as 21 days to as many as 35 days. You can predict yours with the period calculator.

Keep in mind that you need to consult with your doctor if your period lasts longer then 7 consecutive days.

Peak Ovulation

This is the period when you will be ovulating and be at the highest risk for pregnancy as fertile period length is about 6 days. In a 28-day cycle, ovulation typically occurs on day 14. The tracker will help you to define these days!


How to calculate the menstrual cycle without the calculator

The first step is to work out the length of your average menstrual cycle. Day one is the first day of the menstrual period and the last day is the day before the next period begins. If your cycle lasts up to 28 days, your ovulation will be around day 14 (two weeks before your next period). This information will help you calculate your future periods.