How many calories are in 100 grams of potato chips?

Calories in 100g of potato chips (potato crisps)
Here are some examples:

• Approx 547 calories in 3½ or 100g serving of average, plain, salted potato chips
• Approx 536 calories in 3½ or 100g serving of average, plain, unsalted potato chips
• Approx 491 calories in 3½ or 100g serving of barbecue flavor chips
• Approx 531 calories in 3½ or 100g serving of sour cream and onion flavor chips
• Approx 496 calories in 3½ or 100g serving of cheese flavor chips
• Approx 471 calories in 3½ or 100g serving of reduced fat potato chips
• Approx 551 calories in a 3½ or 100g serving of chips made from dried potatoes, cheese-flavor
• Approx 496 calories in 3½ or 100g serving of sweet potato chips.