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About this tool
Compare supplement tubs and brands on true cost per effective serving of the active ingredient, not on sticker price.
A supplement cost per serving tool compares products on the price of the dose you actually take, not on the serving the manufacturer printed on the label. It divides container size by label serving to get servings per tub, multiplies by the active ingredient per serving to get total active, then divides by your target dose to get effective servings — and price divided by that is the number worth comparing. Two creatine tubs at the same shelf price can differ by 80% or more on cost per effective 5 g serving once serving size and purity are accounted for.
Open Supplement Cost Per Serving Tool on AltFTool — it loads instantly in your browser.
Enter the values you already know.
Fine-tune the options to match your scenario.
Read the result and use it in your planning or reporting.
A label serving is a marketing choice; your target dose is the honest unit.
Total cost is what you paid at the door, not the sticker price.
Cost per day, month and year makes a small per-serving gap visible.
Divide the total you paid, including shipping, by the number of servings in the container. For an honest comparison use effective servings: total active ingredient in the container divided by the dose you actually take, rather than the serving size printed on the label.
Because the manufacturer chooses the serving size. A tub that lists 3 g of creatine per scoop shows more servings and a lower cost per serving than one listing 5 g, even though the second tub may cost less per gram of creatine. Comparing on cost per gram of active ingredient removes that distortion.
A label serving is one scoop, capsule or tablet as defined on the panel. An effective serving is the amount that delivers the dose used in research — for example 5 g of creatine monohydrate a day for maintenance, or 4-6 g of beta-alanine. If a scoop contains 3 g of creatine, one effective serving is 1.67 scoops.
Not reliably. A proprietary blend lists only the total weight of the blend, not how much of each ingredient it contains, so you cannot know the active dose per serving. That is the main practical reason to avoid them. Speak to a dietitian or doctor before starting any supplement.
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