Protein Bars: typically 364 calories per 100g. Individual products range from 100 to 521 per 100g. Best for protein per calorie: Your goal Twenty’s protein bar chocolate brownie, at 18.1g of protein per 100 calories.

Real label figures, compiled from on-pack data and Open Food Facts — last checked 2026-09-18.

Use these numbers

Find the food here, then set a daily calorie target or log it in the tracker.

Protein Bars ranked by protein density

Productkcal/100gProtein/100kcalCarbs/100kcalFat/100kcal
Your goal Twenty’s protein bar chocolate brownie18818.1g3.3g1.6g
Carrefour Protein Barrita34514.5g5.8g2.9g
Sportness Protein bar 50% stracistella37113.8g6g3.1g
Lidl High protein barre fraise36413.7g7.1g2.7g
Nu3 Protein Bar Peanut butter36613.7g7.9g2.7g
Lidl Chocolate Brownie Protein Bar 45g36913.6g6.9g3g
Lidl Protein bar cookies cream36913.6g7g2.9g
Protein bar 405648913203216613.6g7.2g2.9g
Nu3 Protein bar32112.5g10g2.1g
Lidl Protein Bars Chocolate Brownie Flavour 135g40712.3g7g2.5g
Optimum Nutrition Complete Protein Bar Double Rich Chocolate Flavour 50g33312g7.2g2.4g
High5 Recovery Protein Bar Double Chocolate Flavour 50g32011.9g11.9g1.7g
Optimum Nutrition Complete Protein Bar Chocolate Orange Flavour 50g33111.8g7.9g2.3g
Quest Nutrition Chocolate Peanut Butter Protein Bar 60g28311.8g5.3g4.1g
Pure Protein Chocolate Deluxe Protein Bar18011.7g9.4g2.5g
Quest Protein Bar Birthday Cake Flavour 60g30011.7g7.1g2.8g
MyProtein Chocolate Orange Flavour High Protein Bar 80g32411.6g9.3g2.3g
Reflex Protein Bar Chocolate Toffee Bar 60g30711.4g10.9g2.3g
Lidl Gain Protein Bar Salted Caramel Flavour 60g30711.3g10.4g2.5g
Applied Nutrition Protein Crunch Protein Bar White Chocolate Caramel Flavour 62g31311.1g10.8g2.4g
No Cow PB chocolate chip Protein Bar31711.1g11.6g2.4g
Quest Chocolate Chip Cookie Dough Protein Bar 60 g31711.1g2.1g4.7g
Quest protein bar19011.1g2.1g4.2g
USN Protein Bar Strawberry Cheesecake Flavour 55g30611.1g11.1g2.3g
MyProtein Barbecue Crisps 25g40011g4.3g3.1g
USN Banana Waffle Flavour Protein Bar 40g33511g10.4g2.3g
USN Diet Whey Meal Replacement Protein Bar - Chocolate Fudge 55g36411g9g2.8g
MyProtein Lean Layered Protein Bar Cookie Dough Flavour 40g34210.9g8.8g2.3g
MyProtein Lean Layered Protein Bar White Chocolate Raspberry Flavour 40g34510.9g8.7g2.5g
MyProtein Lean Layered Protein Bars Cookie Dough Flavour 3 x 40g34210.9g8.8g2.3g
USN Protein Bar Banana Waffle Flavour 55g31610.9g10.9g2.4g
USN Protein Bar Salted Caramel Flavour 55g31610.9g10.9g2.5g
Grenade Carb Killa Fudge Brownie High Protein Bar 60g35910.8g6.3g3.7g
Grenade Carb Killa High Protein Bar Caramel Chaos 60g35710.8g6.3g3.7g
Grenade Carb Killa High Protein Bar Selection Box 12 x 60g Caramel Chaos35710.8g6.3g3.7g
Barebells Protein Bar Cookies & Cream 55g34610.7g9g3.5g
Grenade Dark Chocolate Mint Flavour Protein Bar 12 x 60g33710.7g9.5g3.3g
Quest Protein Bar S'mores Flavour 60g32710.7g4.6g3.7g
Grenade Carb Killa High Protein Bar White Chocolate Mocha 60g35610.6g7.2g3.7g
Grenade Protein Bars White Chocolate Cookie Flavour 12 x 60g35810.6g8.4g3.9g
Grenade White Chocolate Cookie Flavour Protein Bar 60g35810.6g8.4g3.9g
Pure protein Protein bar36010.6g9.4g2.5g
Fulfil Dark Chocolate & Mint Vitamin Protein Bar33810.5g5.4g3.6g
Grenade Fudged Up Flavour Chocolate Protein Bar 60g35010.5g9.1g3.6g
Grenade Protein Bar Caramel Chaos Flavour 60g34410.5g8.4g3.8g
Grenade Protein Bars Caramel Chaos Flavour 12 x 60g34410.5g8.4g3.8g
Linea Protein bar10510.5g9.3g3.3g
Optimum Nutrition Caramel Chocolate Flavour Protein Bar 60g31710.5g9.5g3.2g
USN Protein Bar Chocolate Brownie Flavour 55g31110.5g10.5g2.5g
2keepfit Protein bar38310.4g9.6g2.3g

Showing the top 50 of the 454 protein bars products that carry a comparable calorie figure, ranked by protein per 100 calories. Figures per label, sourced from Open Food Facts and tracker user logs, last checked 2026-09-18.

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Scan your own shop with FoodSussed: calories and macros from the barcode, plus an estimated processing level from 1 to 4 with the reasons. Or start with the fat-loss guide built around Irish food.

What the protein bars numbers show

Median across all 454 of them is 9.1g of protein per 100 calories. 104 clear 10g of protein per 100 calories — about one in four, and 10g is the line Keith uses for a food that pays for its calories.

Calories run from 100 to 521 per 100g inside this one group, a 5-fold spread, so “protein bars” on its own tells you almost nothing about what a portion costs you.

Own-brand is not the compromise here. The supermarket own-label median is 9.9g of protein per 100 calories across 12 products, against 9.1g for the 442 name-brand ones.

What to actually pick

On the numbers the pick is Your goal Twenty’s protein bar chocolate brownie: 18.1g of protein per 100 calories, 2 times the 9.1g median for the group.

64 of the 454 carry 400 calories or more per 100g — the ones worth weighing rather than eyeballing.

Where this fits

A protein-per-calorie number is only useful once you know the target, and that is how much protein a day actually works out to.

For one specific product rather than the whole group, the 20,000-product database is searchable on Calories in Ireland, and the same figures are built into the calorie app.

FAQ

How many protein bars products are in this database?

We track 454 protein bars products across Irish supermarkets and brands. 454 of them carry 20 calories or more per 100g, which is the point below which protein per 100 calories stops being a real number, so those are the ones ranked and averaged here.

What's the most protein-dense protein bars product?

The table is sorted highest protein per 100 calories first, so the answer is the top row. The more useful number is that the median for the whole group is 9.1g per 100 calories and 104 products clear 10g — that tells you whether protein bars is worth buying for protein at all, which protein per 100g does not.