How Much Does a Period Cost? Honest Arithmetic, and What Nobody Has Measured

Nobody has measured this, and every page that hands you a lifetime total has invented most of it. Two honest things can be said. One measured input exists: in a 2025 randomised trial of 20 adults with heavy menstrual bleeding, participants changed disposable products a mean of 5.5 times a day, so the number of products a period takes is 5.5 multiplied by the number of days your own periods run. And exactly one price range has been published in the research this site is built on: a 2019 systematic review identified 199 menstrual cup brands available in 99 countries at listed prices ranging from US$0.72 to US$46.72. That is a global spread of what cups were listed at in 2019 — not what anything costs where you live, and nobody here has checked a single shop. Everything else that goes into a total is local, and yours.

This page is for anyone trying to work out what they are actually spending, or arguing with a figure they saw somewhere. It shows the working and stops where the evidence stops.

The one input anybody has measured

The 2025 trial ran across two cycles and randomised 20 adults with heavy menstrual bleeding between disposable products, menstrual cups and period underwear. The change counts it produced: disposables a mean of 5.5 times a day, cups 3.3 times, underwear 3.5 times.

Carry two caveats with that 5.5. First, everyone in the trial had heavy menstrual bleeding — it is a number from heavy periods, and lighter periods will take fewer. Second, the authors chose a sample of 20 for feasibility, because no earlier studies existed to power the trial on. Twenty people is what the whole field had at that point.

Even so, it is the only measured multiplier available, and it beats a figure somebody made up. Five and a half changes a day, across however many days your period lasts, is the count of products one period takes. No source this page may use puts a number on how many days a period runs, so that slot stays yours to fill from your own record.

The sum, with the blanks left blank

That last row is the point of the page. The arithmetic is easy; the inputs are the problem. Fill in your own two slots and the sum is genuinely yours — and it will be nothing like the total on any of the pages that ranked above this one.

The only price anybody has published

Here it is, once, with everything attached to it. The 2019 systematic review of menstrual cups identified 199 brands available in 99 countries, at prices ranging from US$0.72 to US$46.72.

What that range is: a snapshot of listed prices for one kind of product, gathered across the world by researchers in 2019. What it is not: what a cup costs in your town, this year, in your currency, after tax. The spread between the ends of it is so wide precisely because it crosses 99 different markets. Treat it as evidence that the same object is sold at wildly different prices in different places, which is the useful thing it tells you, rather than as a price tag. No other product on this site has a published figure at all — pads, tampons and underwear have none in the sources here, so none appears.

Everything that moves the answer, and cannot be pinned down

Six things change the total and none of them can be looked up from here.

Where you live. Local prices and whatever tax applies to period products where you are — the 2019 range across 99 countries is the evidence that this varies enormously.

Whether you have to buy them at all. Some schools and workplaces hand products out. If yours does, most of this arithmetic is somebody else's.

How heavy your periods are. The measured 5.5 changes a day came from people with heavy menstrual bleeding, and that multiplier is the single biggest lever in the sum.

What you use. The NHS notes that pads come in many sizes so you can choose one to suit how heavy or light your period is, that pantyliners are a smaller thinner pad for very light days, and that reusable washable pads exist alongside tampons, cups and period underwear. Those are different objects bought on different schedules, and they are compared on measured properties in period products explained.

The things that come with a period but are not period products. Painkillers, a spare pair of underwear in the bag, replacing something a leak ruined. Real spending, entirely unmeasured.

Laundry. Reusables have to be washed. Nobody in these sources has costed that, so nobody should pretend it is zero.

Buy once, or buy again: the shape rather than the sum

There is one comparison here that survives having no prices, and it is structural. A box of pads or tampons is bought, used up and bought again. A cup or a pair of period underwear is bought and then used again — the NHS says cups can be washed and used again unlike tampons and most pads, and describes period underwear as designed to be washed and reused. Those are two different shapes of spending, not two sizes of the same one.

What this page will not do is turn that shape into a payback point — "it pays for itself after four months" and so on. That calculation needs the price of the reusable thing and the price of the disposable thing where you live, and this site has neither. The shape is real; the crossover date is arithmetic on numbers nobody here has.

Two things worth weighing before assuming reusable means cheaper. A cup has a learning curve, documented almost by accident in that 2025 trial: eight of its ten cup users had never used one before, and the authors flagged it as a limitation. And there is no regulation of period underwear content or capacity, according to a 2023 review of menstrual products, so a more expensive pair is not necessarily a more absorbent one. Both are set out at length in menstrual cups, honestly and period underwear, honestly.

When there is not enough money

This is measured too, and it is more common than most people assume. Among 471 college-attending women in the United States, 14.2% had been unable to afford menstrual products at some point in the past year, and a further 10.0% were unable to afford them every single month. Women in that second group were the most likely to report moderate or severe depression, with an adjusted odds ratio of 2.34 (95% CI 1.09 to 4.99).

The authors' own limitations belong right next to those numbers. The sample was not probability-based, so it does not represent all students anywhere. No standardised way of measuring this exists, so their definition is theirs. And they could not test whether the link with depression held independently of wider financial hardship — being short of money affects a great many things at once, and this study cannot separate them.

Now the practical part, which is short. The NHS's own advice is that if you find yourself at school without a pad or tampon, you ask a teacher or the school nurse for some. That is the sentence to remember: it is a normal request, made constantly, by people who keep a supply exactly because it is asked for. A school office, a school nurse and a form tutor are three doors, and any of them will do. If it is easier at home, the NHS's framing is to talk to your parent or another adult you trust — an aunt, an older sister, whoever is simplest to ask.

Needing to ask is a money problem and nothing else. It says nothing about you. The rest of the school side of this — what to keep in a bag, what to do about a lesson you cannot leave — is in periods at school.

Two sheets that make the sum yours

The two blanks in the table are the two things you can close on your own, and one of them takes a fortnight.

The printable period tracker gives you the number of days your periods actually run — the multiplier the whole sum turns on, and the one people misremember most. A couple of cycles is enough. The other blank is a shop, and takes ten minutes with the real prices where you are.

The first period kit checklist handles the other side of the money question, which is waste: a bag stocked once, so nothing gets bought in a hurry at a corner shop. Both sheets print at home and store nothing anywhere.