{"id":544,"date":"2026-10-14T13:13:33","date_gmt":"2026-10-14T05:13:33","guid":{"rendered":"http:\/\/www.yxenvironmental.com\/blog\/?p=544"},"modified":"2026-10-14T13:13:33","modified_gmt":"2026-10-14T05:13:33","slug":"how-to-measure-the-capacity-of-a-makeup-tube-4cfa-d6fbee","status":"publish","type":"post","link":"http:\/\/www.yxenvironmental.com\/blog\/2026\/10\/14\/how-to-measure-the-capacity-of-a-makeup-tube-4cfa-d6fbee\/","title":{"rendered":"How to measure the capacity of a makeup tube?"},"content":{"rendered":"

Hey there, if you\u2019ve ever stared at a makeup tube that says \u201c10ml\u201d or \u201c0.34fl oz\u201d on the packaging and wondered if that number\u2019s actually legit, you\u2019re not alone. As a makeup tube supplier, I get asked this all the time by small brand owners and even some big players who swear their tubes are holding more than they label\u2014half the time it\u2019s a mix-up in measuring, not a trick. Today I\u2019m breaking down exactly how to measure makeup tube capacity like a pro, no fancy lab equipment required, and no guesswork. Makeup Tube<\/a><\/p>\n

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First off, let\u2019s get one thing straight: makeup tube capacity isn\u2019t just about the \u201cfilled space\u201d inside. There\u2019s air at the top (that\u2019s called headspace, for anyone who cares about the jargon) and sometimes even leftover product that\u2019s stuck to the walls you can\u2019t squeeze out. But when brands label capacity, they almost always mean the net content of actual usable product, right? So I\u2019m focusing on that real usable number, not just how much liquid fits if you fill it to the brim.<\/p>\n

Let\u2019s start with the easiest method\u2014no dismantling anything, no messy transfers. This is the one I teach all my new clients because it\u2019s quick and works for squeeze tubes, foundation tubes, lip gloss tubes, even those thick cream tubes. Grab a scale first\u2014any kitchen scale that can measure in grams or fluid ounces will do, and don\u2019t worry, you don\u2019t need a fancy lab scale. We\u2019re going for accuracy within 0.5g, which is more than enough for makeup tubes.<\/p>\n

Here\u2019s the step-by-step: First, weigh the empty tube completely<\/em>. That means remove the cap, squeeze out every last drop you can (I know, it\u2019s annoying, but do your best), then wipe the inside with a paper towel until there\u2019s no product left. Weigh that empty tube and write down the number\u2014let\u2019s say it\u2019s 15g. Now, take the full tube, remove the cap, weigh it, and note that number too. If your full tube weighs 25g, subtract the empty tube weight (15g) and you get 10g of product. Wait, hold up\u2014makeup isn\u2019t water, so grams don\u2019t always equal milliliters? Yeah, that\u2019s a thing. If it\u2019s a water-based product like lip gloss or serum, 1g = 1ml almost exactly. But if it\u2019s thick, like foundation or cream, density changes it. A good rule of thumb: divide the product weight by 1.15 for thick creams, 1.05 for average liquid makeup, and that\u2019ll get you close to the actual volume. For that 10g thick cream, that\u2019s ~8.7ml of usable product\u2014if the label says 10ml, there\u2019s probably headspace they didn\u2019t account for, which is totally normal.<\/p>\n

That method works 90% of the time, but what if your tube\u2019s super flexible, or has weird shaped parts at the bottom? Like those squeeze tubes with a pointy tip? Then we need the water displacement method, which is old school but super<\/em> accurate, especially for weirdly shaped containers. No, you don\u2019t have to dump makeup down the drain\u2014just take the empty tube (the one you used earlier) and fill it with water, but only up to where the product actually was. Wait, first: fill the empty tube with water, seal it, squeeze out until it\u2019s exactly as empty as it was when you removed the product. Then, take a graduated cylinder (or even a measuring cup with ml markings) and pour that water into it. That volume is exactly the amount of product that was in the tube. Again, adjust a tiny bit if the product is thick\u2014water is density 1, so if your product is denser, the volume will be a touch less, but this is way closer than just measuring the tube\u2019s height and width.<\/p>\n

Wait, but what if you\u2019re making new tubes and need to test before<\/em> filling them? Like, you have an empty tube on your production line and want to know exactly how much it can hold so you don\u2019t overfill or underfill? That\u2019s a different scenario, and I see brands mess this up all the time because they just calculate the tube\u2019s internal volume with basic geometry. Let\u2019s be real\u2014most makeup tubes aren\u2019t perfect cylinders. They have a narrower neck, a flat base, maybe some ridges to squeeze. So measuring them like a can of soda is wrong. Here\u2019s what I do for my clients: take a tube, remove the nozzle or tip if there is one, fill it with water all the way to the very top (no cap, so it\u2019s not spilling), and then pour that water into a graduated cylinder. That\u2019s the total internal volume<\/em> of the empty tube. Then, when you fill it with product, you leave a little headspace (usually 5-10% of total volume) so it doesn\u2019t leak when you cap it or squeeze it. So if a tube\u2019s total internal volume is 11ml, you\u2019d label it 10ml of product\u2014makes total sense, right?<\/p>\n

I should also mention the mistakes brands make all the time that throw capacity off. One big one: temperature. If you\u2019re measuring product in a warm room, it might expand a tiny bit\u2014water expands about 0.2% per degree Celsius above room temp, so if your lab is 30C instead of 20C, that\u2019s a 1% difference. Not a huge deal, but if you\u2019re labeling to the nearest ml, it adds up. Another mistake: leftover product we don\u2019t count. When you squeeze a tube, there\u2019s always a gram or two stuck to the walls\u2014so if you measure the full tube minus empty tube, that number is the total amount that came out, not what\u2019s actually usable. That\u2019s why some people feel like they got ripped off, but it\u2019s just physics.<\/p>\n

Oh, and what about tubes with pumps? Those are different. A pump tube doesn\u2019t have all the product at the bottom\u2014each pump dispenses a set amount. So to measure that, you take the empty pump tube, prime the pump a few times, pump out all the product you can, and measure the total weight difference, same as before. Then divide by the number of pumps to get per-pump volume. And always test with a few different pumps, because sometimes the pump\u2019s flow can be slightly off\u2014one might give 0.5ml, another 0.55ml.<\/p>\n

As a makeup tube supplier, I see so many brands skip these steps and end up with overfilled tubes that leak, or underfilled ones that get bad reviews. Last year, a small brand came to me saying their 15ml foundation tubes were testing at 13ml, and they thought I was selling them undersized tubes. Turns out they were just weighing the full tube minus the empty tube, which left out the small amount of product stuck in the pump and on the tube walls. Once we tested it with water displacement, we saw the tubes could<\/em> hold 16ml, so I adjusted their fill line to account for the usable product, and they haven\u2019t had a complaint since. That\u2019s the stuff that matters\u2014getting the numbers right so your customers are happy.<\/p>\n

Another thing to keep in mind: different regions have different labeling rules. The FDA in the US requires net content to be accurate within 10% for products under 4oz, for example. So if your tube says 10ml, it just needs to be between 9 and 11ml, not exactly 10. That\u2019s why brands leave a little headspace\u2014they\u2019re not trying to scam anyone, they\u2019re just following regulations. But if you\u2019re a brand that wants to nail it to the exact ml, these methods will get you there.<\/p>\n

Let\u2019s recap real quick, so you don\u2019t have to scroll back:<\/p>\n

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  1. For filled tubes (checking label accuracy): Weigh full tube, subtract empty tube weight, adjust for product density.<\/li>\n
  2. For empty tubes (calculating capacity): Water displacement method, pour water into empty tube to measure total volume, then subtract 5-10% for headspace.<\/li>\n
  3. For pump tubes: Measure total pumped product, divide by number of pumps to get per-pump volume.<\/li>\n<\/ol>\n

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    No fancy tools needed, just a scale, some water, a little patience. And if you\u2019re a brand looking for makeup tubes that fit your exact capacity needs, don\u2019t overcomplicate it. Hit me up to chat through your specs\u2014whether you need a 5ml lip gloss tube or a 30ml foundation tube, we\u2019ll make sure the capacity is spot on, no guessing.<\/p>\n

    Lotion Tube<\/a> References:<\/p>\n