Tools
Five free tools that turn protein targets and product labels into concrete choices from the 648 Amazon snacks that clear the 180cal rule: more than 8g protein, 180 calories or fewer per listed serving.
- Tools
- 5
- Catalog products
- 648
- Formats
- 4
- Collections
- 23
All five tools
Protein Gap Calculator
Estimate your remaining daily protein target and find 180cal snack options that can help close the gap under the calorie cap.Protein Density Calculator
Calculate grams of protein per 100 calories for any label, using the Amazon snacks that list more than 8g protein, 180 calories or fewer.Snack Stack Builder
Build one-to-three item snack stacks for a protein target and calorie budget, using Amazon snacks with more than 8g protein, 180 calories or fewer.Best Value Protein Finder
Rank Amazon snacks by protein per dollar while keeping calories and protein density visible, using only products that clear the 180cal rule.Protein Snack Checker
Check a product label or Amazon listing against the 180cal rule of more than 8g protein, 180 calories or fewer per listed serving.
Questions about the 180cal tools
Do the tools use live Amazon prices?
No. Every tool runs on the cached 180cal catalog, last checked July 9, 2026. Amazon is the source of truth for live price, seller and availability at checkout.
Which tool should I use to compare two labels?
The protein density calculator. Enter each label's protein and calories to get grams of protein per 100 calories, which is comparable across different serving sizes.
Do the tools need an account?
No. All five run in the browser, store nothing, and work signed out. Saving a cart across devices is the only feature that needs an account.