Calories in a Packet of Chips, Popcorn and Pretzels

By NYUS Inc. · Published 27 October 2026

A small packet of chips with the match, a bowl of popcorn at the cinema, a few pretzels with a drink: packaged snacks are eaten by the packet or the bowl, but calorie lists give them per 100 g. This guide gives the calories per 100 g for five snack records from USDA FoodData Central and one puffed rice row from IFCT 2017, then turns them into a serving using the weights USDA prints on each record, and into a small packet or a bowl using weights that are ours and labelled. The figures are for plain, salted snacks, not a particular brand and not an Indian namkeen.

The short answer

By the USDA records below, 22 potato chips (1 oz, 28 g) are about 149 kcal, a cup of oil-popped popcorn (11 g) about 55 kcal, an ounce of tortilla chips (28.35 g) about 134 kcal and an ounce of hard pretzels about 109 kcal; 10 pretzel twists (60 g) are about 230 kcal. A cup of air-popped popcorn (8 g) is about 31 kcal. By our assumptions, a 30 g pack of potato chips is about 160 kcal, a 50 g pack about 266 kcal and a 3-cup bowl of popcorn about 93 kcal air-popped or 165 kcal oil-popped. Our reading: per 100 g the rows run from 362 to 532 kcal, so a packet or a bowl is mostly decided by how much it weighs.

Calories per 100 g and per serving

Indian lab values (IFCT 2017) cover one snack of this kind: Table 1 has puffed rice (murmura, A012, 6 regions, PDF page 41) at 1514 kJ per 100 g, which is 362 kcal at 4.184 kJ per kcal, and no row for chips, popcorn, pretzels, namkeen or fried snacks that we found. The other five rows are USDA FoodData Central SR Legacy reference values, and the kcal per 100 g is the Energy figure printed on each record. The servings come from two places. The 22 chips, the cup of popcorn, the ounce, the 10 pretzel twists and the bags are the household portions USDA prints on each record page. A small packet is not on the records, so the packet and bowl rows are ours: a 30 g pack and a 50 g pack are round-number assumptions for a small and a medium pack, not any brand's, and a bowl is 3 of USDA's cups, so 3 times 8 g is 24 g and 3 times 11 g is 33 g. Packs and bowls vary, so read the net weight on yours. Each figure is the grams times the kcal per 100 g in the table, divided by 100, rounded to the nearest kcal. The rows are plain, salted US snacks; the puffed rice row is shown for the same 30 g pack so you can compare it with the others.

What stands out in the numbers

• Per 100 g the rows run from 362 to 532 kcal: potato chips 532, oil-popped popcorn 500, tortilla chips 472, air-popped popcorn 387, pretzels 384 and puffed rice 362.
• At the same ounce (28.35 g), our arithmetic on the table rows: potato chips about 151 kcal, oil-popped popcorn 142, tortilla chips 134, air-popped popcorn 110, pretzels 109 and puffed rice 103.
• Popcorn is light by volume. USDA's cup of air-popped popcorn is only 8 g, so an ounce is about 3.5 cups; a cup is about 31 kcal, but a 3-cup bowl is about 93 and the oil-popped bowl about 165 kcal.
• USDA's bags are large. The record lists a bag of potato chips as 227 g, about 1208 kcal, and a bag of tortilla chips as 213 g, about 1005 kcal, so a whole bag is far more than a small packet.
• Other snacks in our guides. Biscuits and chocolate are in our chocolate and biscuit guide, and fried Indian snacks have their own guides, for example our samosa guide.

How to log it so the numbers hold

• Read the net weight. The pack weight is printed on the pack; scale from the per 100 g column, or weigh what you pour into a bowl.
• Flavour and cooking change the row. A masala, cheese or baked chip, kettle-cooked chips, butter or caramel popcorn and coated nuts are not these rows; read the pack or use the closest row.
• Count the bowl by weight. A cup of popcorn weighs very little and a heaped bowl can be several cups, so weigh it or count the cups.
• Barcodes help. Packaged snacks carry a barcode, and our barcode logging guide explains how scanning and the pack label work together.

Where NYUS fits (our app)

We make NYUS, so read this as ours. NYUS is an AI fitness and nutrition coach in early access on Android, with no ads and no data selling. You log foods yourself by searching 8,900+ Indian and global foods or by barcode, and a weekly check-in adjusts your calories, macros and step goal once enough is logged. Barcode coverage of Indian packaged foods is not complete, so search by name when a scan finds nothing.

What this page leaves out

• A calorie target: we have not looked up one for any person, so we give none.
• Protein, fat, sodium and other nutrients: this page gives energy only.
• Indian namkeen, bhujia, mathri, fried snacks and papad, flavoured or baked chips, cinema popcorn with butter or caramel, nuts and trail mix: not covered here.
• Brand pack labels and FSSAI figures: not used, so the page does not mix label numbers with the records above; the pack sizes here are assumptions, not any brand's.
• Anything about weight, health or what these snacks do to your body: the page adds up food data and makes no claim about it. If you have a medical condition, ask your doctor or dietitian.

Sources

• ICMR-NIN, Indian Food Composition Tables 2017 (IFCT 2017). Table 1, energy per 100 g edible portion, read from the PDF on 27 Oct 2026: A012 (rice, puffed, 6 regions, 1514 kJ), PDF page 41.
• USDA FoodData Central, SR Legacy 169677 (Snacks, potato chips, plain, salted): Energy 532 kcal per 100 g; household portions printed on the record: 22 chips 28 g, 1 oz 28.35 g, 1 bag (8 oz) 227 g (read 27 Oct 2026).
• USDA FoodData Central, SR Legacy 170247 (Snacks, popcorn, oil-popped, white popcorn, salt added): Energy 500 kcal per 100 g; household portions: 1 cup 11 g, 1 oz 28.35 g (read 27 Oct 2026).
• USDA FoodData Central, SR Legacy 167558 (Snacks, tortilla chips, plain, white corn, salted): Energy 472 kcal per 100 g; household portions: 1 oz 28.35 g, 1 bag 213 g (read 27 Oct 2026).
• USDA FoodData Central, SR Legacy 167959 (Snacks, popcorn, air-popped): Energy 387 kcal per 100 g; household portions: 1 cup 8 g, 1 oz 28.35 g (read 27 Oct 2026).
• USDA FoodData Central, SR Legacy 167555 (Snacks, pretzels, hard, plain, salted): Energy 384 kcal per 100 g; household portions: 1 oz 28.35 g, 10 twists 60 g (read 27 Oct 2026).
• nyus.in, the NYUS landing page, read on 27 Oct 2026 for the app statements in the NYUS section and the CTA.

The 30 g and 50 g pack weights, the 3-cup bowl, the sums, the rounding, the kilojoule to kcal conversion, the ounce comparison and every sentence starting "Our reading" are NYUS's own arithmetic or opinion, not from USDA or IFCT. The 22 chips, cup, ounce, bag and 10 twists weights are USDA's, printed on the record pages above. Names in the Snack column (chips, popcorn, pretzels, murmura) are our matching to the record names listed above.

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