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3 Original Sliders

3 Original Sliders at White Castle has 420 calories, 18g protein, 48g carbs and 21g fat — sourced from Fast Food Nutrition (mirrors official White Castle data), not AI guesses. 3x The Original Slider (beef, onions, pickle, steamed bun).

3 Original Sliders
420calories
18gprotein
48gcarbs
21gfat
Low cal Contains gluten
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At White Castle, the 3 Original Sliders is light on calories. That works out to 4.3g of protein per 100 calories — 4g below the 22g White Castle average. Its macros land at roughly 17% of calories from protein, 46% from carbs and 45% from fat. Contains gluten.

Source: Fast Food Nutrition (mirrors official White Castle data) ↗, last verified Jul 2, 2026. Menus change periodically; values may vary by location. How we verify →

See all 16 White Castle meals →  ·  Highest-protein White Castle meals →

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3 Original Sliders — common questions

How much protein is in the 3 Original Sliders at White Castle?
The 3 Original Sliders has 18g of protein. It also has 420 calories, 48g carbs and 21g fat, per Fast Food Nutrition (mirrors official White Castle data).
How many calories are in the 3 Original Sliders?
The 3 Original Sliders at White Castle has 420 calories, according to Fast Food Nutrition (mirrors official White Castle data).
Is the 3 Original Sliders good for weight loss?
At 420 calories it's one of the lighter options at White Castle, with 18g of protein to help you stay full.
Does the 3 Original Sliders contain allergens?
Per Fast Food Nutrition (mirrors official White Castle data), the 3 Original Sliders contains gluten. Preparation and cross-contact vary by location — check with the restaurant if you have an allergy.
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