Quest vs ONE Protein Bar Compared
Updated By the HealthWorld editorial teamHow we pick
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The short answer
Both bars deliver 20 g of protein and 1 g of sugar per bar (label), which makes them close competitors for a high-protein, low-sugar snack. Choose Quest if you want the most fiber (~14 g per bar vs ~9 g in ONE) or prefer a chewier, denser bar. Choose ONE if bakery-style flavors like Birthday Cake and Maple Glazed Doughnut and a softer texture matter more to you.
Choose Quest Nutrition Protein Bar if…
- You want high fiber (~14 g per bar) to help you stay full
- You prefer a chewier, denser texture
- You eat bars as a meal replacement or between meals
Choose ONE Protein Bar if…
- You want dessert-style flavors that taste like a treat
- You prefer a softer, smoother texture
- ~9 g of fiber per bar is enough for you
Side by side
| Quest Nutrition Protein Bar | ONE Protein Bar | |
|---|---|---|
| Protein | ~20 g | 20 g |
| Calories | ~190–200 | 220 |
| Sugar (label) | ~1 g | 1 g |
| Fiber (label) | ~14 g | ~9 g |
| Texture | Chewy, dense | Soft, smooth |
| Flavor style | Dessert-style | Bakery-style (Birthday Cake, Maple Doughnut) |
| Best for | Staying full, meal replacement | Post-workout treat, flavor variety |
Where to buy
Frequently asked questions
Which protein bar is better for weight loss?
Both can fit a weight-loss plan: each has 20 g of protein and 1 g of sugar, which helps with hunger between meals. Quest has more fiber and slightly fewer calories, which may keep you fuller for longer. Either way, count the bar toward your daily calories.
Are Quest bars or ONE bars healthier?
Both offer ~20 g of protein and 1 g of sugar on the label, so they're similar in macro profile. Quest has more fiber, which supports digestion and fullness. 'Healthier' depends on what you're looking for: more fiber and fewer calories (Quest) or softer texture and more flavor options (ONE).
Why do Quest bars have so much fiber?
Quest bars use soluble corn fiber and other fiber sources to add bulk and texture while keeping the sugar low. High fiber helps you stay full, supports digestion, and keeps the net carbs down for people who track them.
Do ONE bars have sugar alcohols?
Yes. ONE bars list maltitol, a sugar alcohol, among the first ingredients (Quest uses erythritol instead). Some people find sugar alcohols cause bloating or stomach upset in larger amounts. If you're sensitive, try one bar first.
Sources
- Dietary Supplements for Exercise and Athletic Performance — NIH Office of Dietary Supplements
- Dietary Supplements — U.S. Food & Drug Administration