Instant keto label checker · barcode scanner
Scan a package barcode or enter label values. Get instant net-carb math, sweetener caveats, and verified ingredients.
Scan a barcodeKeto Fit Check
Conservative counts sugar alcohols. Label-style subtracts listed sugar alcohols. You see the exact math before deciding.
Total carbohydrate minus dietary fiber. Sugar alcohols remain counted.
Examples, not customer testimonials
These five neutral scenarios demonstrate supported calculator behavior. They are not accounts from customers, endorsements, medical outcomes, purchase claims, or universal keto approvals.
Try the checker with a current labelIllustrative example 1
One package lists 9 g total carbohydrate and 4 g fiber per serving. Entering those fields makes the 5 g conservative result explicit, so another label can be compared on the same basis.
9 g total − 4 g fiber = 5 g
Try: Enter each package separately and keep the serving basis and selected limit the same.
What it shows: A consistent formula makes label comparison clearer; it does not rank the products.
Illustrative example 2
A front label can emphasize low net carbs while the available ingredient list includes tapioca starch. The checker keeps the ingredient evidence visible beside the arithmetic.
Try: Read the shown ingredients and compare them with the current package before relying on the number alone.
What it shows: Ingredient context can surface a reason for closer inspection; the calculator does not infer a health effect from an ingredient name.
Illustrative example 3
A label lists 8 g total carbohydrate and 3 g fiber per serving, producing 5 g conservative net carbs for that stated serving.
8 g total − 3 g fiber = 5 g
Try: Check the package serving size before applying the per-serving result to a different portion.
What it shows: The displayed result belongs to the label serving, not an unspecified amount eaten.
Illustrative example 4
A public product record provides carbohydrate but no usable fiber value or complete ingredient evidence. The lookup result cannot be verified instead of filling the gap with a guess.
Try: Use the current package for the missing fields or leave the result unresolved.
What it shows: Missing evidence is a reason to pause, not a zero value to assume.
Illustrative example 5
A serving lists 12 g total carbohydrate, 5 g fiber, and 4 g listed sugar alcohols. Conservative shows 7 g; label-style shows 3 g.
12 g total − 5 g fiber − 4 g listed sugar alcohols = 3 g
Try: Switch methods to see the deduction, then choose the interpretation and per-serving limit deliberately.
What it shows: The difference comes from the listed sugar-alcohol deduction, not from a hidden rule.
Reviewed snacks
Compare per-serving net carbs across verified packaged snack labels. These are editorial reference points, not a quality or popularity ranking.
Source market: Israel (IL) & global. Availability and formulas can vary by region.
BrandIQBAR
The sampler lists 12 g protein for every flavor and makes flavor-level label differences visible.
Per serving: 1 bar (45 g)
Sources shown in checker.
BrandHighKey
A savory cracker format with 7 g protein and a complete single-serving nutrition label.
Per serving: about 12 pieces (28 g)
Sources shown in checker.
BrandAtkins
A portioned sweet option whose label lists fiber and erythritol, allowing both calculations.
Per serving: 1 cup (30 g)
Sources shown in checker.
BrandKiss My Keto
A candy-format comparison with a complete label and a clear 1 g protein tradeoff.
Per serving: 1 bag (23 g)
Sources shown in checker.
The current pilot catalog contains four products with verified label data, rights-documented product images, and varied protein levels and snack formats. Their display sequence is editorial, not a quality, sales, or popularity ranking. We will use “popular” only after a documented source, time period, and meaningful sample support that claim.
How it works
Conservative net carbs
Total carbohydrate minus dietary fiber. Sugar alcohols remain counted.
Label-style net carbs
Also subtracts listed sugar alcohols. We show both so you decide what fits your diet.
This is an objective label calculation, not medical advice. Check the physical package in hand for recent recipe or allergen changes.
Quick answers
The conservative calculation subtracts dietary fiber from total carbohydrate. Label-style also subtracts sugar alcohols only when the label lists an amount. The checker shows both calculations and every deduction.
No single universal keto certification applies to every packaged snack. Keto Fit Check compares transparent per-serving carb math with the limit you select, then reports likely fit, borderline, does not fit, or cannot verify.
The checker attempts a live barcode lookup through Open Food Facts across US, EU, and IL databases. If nutritional evidence or ingredients are missing, it returns Cannot verify instead of guessing. You can also enter label values manually.
No account is required. Manual label values stay in your browser. A barcode not found in the reviewed catalog is sent to the PickCrest lookup service and Open Food Facts to retrieve a public product record; temporary barcode caching avoids duplicate upstream requests.