80% fewer calories than regular preserves. 10 calories per 1 tbsp. Sweetened with Splenda brand. Recipes, gifts and more. www.smuckers.com. Sugar Free Strawberry Preserves contains 10 calories per serving compared with regular preserves which have 50 calories. Call toll free with questions or comments 1-888-550-9555 M-F 9am-7pm (EST).