There are 510 calories in a Seafood & Crab Sandwich from Sonic. Most of those calories come from fat (38%) and carbohydrates (51%).
To burn the 510 calories in a Seafood & Crab Sandwich, you would have to run for 45 minutes or walk for 73 minutes.
According to our website visitors, it's hard to tell if Seafood & Crab Sandwich from Sonic is a healthy option. Our visitors are split on the issue, with 50% of visitors thinking a Seafood & Crab Sandwich is healthy and 50% thinking it's unhealthy.
Let us know what you think! Review the nutrition facts above and then vote on whether you think a Seafood & Crab Sandwich is healthy or not.
Allergy Information: a Sonic Seafood & Crab Sandwich contains egg, fish, gluten, milk, shellfish, soy and wheat.
* Please keep in mind that most fast food restaurants cannot guarantee that any product is free of allergens as they use shared equipment for prepping foods.
There are 16 Weight Watchers Freestyle Points, 17 WW SmartPoints and 13 WW PointsPlus in a serving of Seafood & Crab Sandwich from Sonic.
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