Whey calculator: real cost per protein
Compare whey by what matters: protein percentage, total protein in the tub and cost per protein dose.
Use 20 to 40 g as a practical reference, adjusting to the rest of the day.
Cost per 100 g of real protein
$16.67
80% of the product is protein, with about 720 g of total protein in the container.
Serving cost
$4.00
Using the serving stated on the label.
For the target dose
37.5 g
Approximate cost: $5.00.
Total protein
720 g
Estimate for the whole container.
The comparison is financial and educational. It doesn't recommend a brand, coupon or specific supplement.
Share
Terms used in this calculator
These concepts show up in the math and help you read the result with more context.
- Whey protein
- Whey protein is a concentrated protein source from milk whey used for convenience to complete daily intake.
- Protein per kg
- Protein per kg means calculating daily protein intake relative to body weight.
The tub price doesn't tell the whole story
Two products at the same price can deliver very different amounts of protein. The comparison improves when you calculate how much the real protein costs, not just how many grams are in the container.
The calculator uses package weight, price, serving and protein per serving to estimate protein percentage, total protein and cost per target dose.
Use whey as convenience, not as an obligation
Whey is a practical way to top up protein, but it isn't required for hypertrophy. Total daily intake, meal distribution and training consistency still matter more.
This tool doesn't recommend brands, coupons or protocols. It only makes the comparison more transparent for a purchase decision.
Sources and references
- Source: Jäger R, Kerksick CM, Campbell BI, et al. International Society of Sports Nutrition Position Stand: protein and exercise. JISSN, 2017. — Journal of the International Society of Sports Nutrition
Reviewed by the SelfShapeAI research team.
Frequently asked questions
How do I compare two wheys?
Compare the cost per 100 g of real protein and the cost to reach a similar protein dose. The cheaper product per tub can end up more expensive if it has less protein per serving.
How many grams of protein per dose make sense?
A common practical reference is doses with about 20 to 40 g of protein, adjusting to the rest of your daily intake.
Is whey necessary to build muscle?
No. Whey is convenience. Gaining mass depends on well-planned training, adequate total intake, sleep and consistency.
Keep reading
Take the math into your training
SelfShapeAI builds the plan, logs your loads and adjusts volume with context — so you don't have to run the numbers by hand.
