Whey comparator: which is better value?
Compare two wheys by cost per real protein, cost per target dose and total protein delivered in the container.
Use the same target dose to compare real cost between products.
Best value for money
Whey A
Whey A costs $16.67 per 100 g of real protein, about 13.8% cheaper on this metric.
Whey A
$16.67
Per 100 g of real protein.
Whey B
$19.33
Per 100 g of real protein.
Target dose
30 g
Same target used for both products.
| Product | Real protein | Cost/100 g protein | Target-dose cost |
|---|---|---|---|
| Whey A | 80% (720 g in the tub) | $16.67 | $5.00 for 37.5 g of powder |
| Whey B | 83.3% (750 g in the tub) | $19.33 | $5.80 for 36 g of powder |
The winner is only the lowest cost per real protein among the values entered. Quality, lab reports, ingredients and tolerance still matter.
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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 best price isn't always the smaller tub
A whey can look cheaper on the label and still deliver less real protein. To compare properly, the math has to weigh price, package weight, serving and protein per serving.
The comparator points out which product has the lowest cost per 100 g of real protein and shows the cost to reach a similar target protein dose.
Value for money isn't a brand recommendation
The tool compares numbers you enter. It doesn't judge taste, digestibility, lab reports, sourcing, sweeteners, allergens or personal preference.
Whey is still convenience. The base of your result comes from well-executed training, enough food, sleep and consistency.
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 know which whey is better value?
Compare the cost per 100 g of real protein. That indicator corrects the price by the effective amount of protein delivered, instead of just looking at the tub price.
What if one whey has more carbs or fat?
The calculator focuses on protein cost. For a complete decision, read the full label and consider tolerance, ingredients, allergens and your nutritional goal.
Does the tool recommend buying the winner?
No. It only shows the best cost per real protein among the values entered. The purchase decision still depends on quality, sourcing and individual context.
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.
