Tool · Investor Sam Fit

Supplement Cost Calculator

June 30, 2026 • By the Investor Sam Editorial Team • Reviewed by Berly Sam Varghese, Editor
Supplement labels advertise a low price per tub, but the number that matters to your wallet is the cost per serving and how that stacks up over a year of daily use. This calculator takes the container price, how many servings it holds, and how many you take a day, then reveals the per-serving cost and the monthly and annual spend. It works for protein powder, creatine, pre-workout, vitamins, or anything else you dose by the scoop or pill.

Example: Container price: 40 $ · Servings per container: 30 servings · Servings per day: 2 per day

Cost per serving$1
Monthly cost$80
Annual cost$960

Worked example

A $40 tub with 30 servings costs 40 / 30 = about $1.33 per serving. Take two servings a day and you use 2 x 30 = 60 servings a month, which comes to roughly $80 a month and about $960 a year. The per-tub price looked cheap, but at two scoops daily the annual figure is what actually hits your budget.

Frequently asked questions

Why is cost per serving more useful than the price on the tub?

Two products can have the same tub price but very different serving counts or serving sizes, so the cheaper-looking one may cost more per dose. Comparing cost per serving puts every product on the same footing and is the honest way to shop supplements.

How can I cut my supplement spending?

Buying larger containers, choosing unflavored basics, and dropping anything without solid evidence behind it all lower the annual total. Some staples like creatine are extremely cheap per serving, while proprietary blends and fancy pre-workouts are where budgets balloon, as the annual figure makes clear.

Which supplements are actually worth the cost?

Evidence most strongly supports a few basics such as creatine, protein powder as a convenient protein source, and correcting genuine nutrient deficiencies. Many other products have weak support. Run each one through this tool and weigh its annual cost against how much it truly helps you.

Do I need to take supplements every day?

Some, like creatine, work best taken daily, while others are situational. If you skip days, lower the servings-per-day figure to see your real usage cost. Reducing frequency on non-essential products is an easy way to bring the annual number down.

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Sources

Berly Sam Varghese · Editor, Investor Sam

Berly Sam Varghese is an engineer who treats money the way he treats any hard problem — something to be engineered, not gambled on. He funded years of education and built real financial stability the patient way, by living below his means and investing rather than borrowing. He writes for the person trying to invest in their health without wasting money. He reviews and approves every article on Investor Sam and checks the figures against primary sources before anything is published. More about our standards.