Calories in 1 Piece of Chocolate and a Butter Biscuit

By NYUS Inc. · Published 27 October 2026

A bar of milk chocolate after lunch, a square of dark chocolate with tea, a couple of butter biscuits with chai: sweets and biscuits are eaten by the piece, but calorie lists give them per 100 g. This guide gives the calories per 100 g for six chocolate and biscuit records from USDA FoodData Central, then turns them into one piece and two pieces using the weights USDA itself prints on each record, so none of the piece weights is our guess. The figures are for the plain products the records describe, not for a particular brand or an Indian biscuit by name.

The short answer

By the USDA records below, a 44 g milk chocolate bar is about 235 kcal and a 7 g miniature bar about 37 kcal. An ounce (28.35 g) of 70-85% dark chocolate is about 170 kcal, and USDA's 14.5 g serving of semisweet chocolate about 70 kcal. A 5 g butter cookie is about 23 kcal, a 10 g round creme-filled sandwich cookie about 48 kcal and a 17 g sugar cookie about 79 kcal. Our reading: the six rows sit between 464 and 598 kcal per 100 g, so a biscuit and a chocolate of the same weight are close; the difference you see comes from how much each piece weighs, a bar being many times a small cookie.

Calories per 100 g and per piece

Indian lab values (IFCT 2017) do not cover these foods: Table 1 has no chocolate, biscuit or cookie row that we found, so every row here is a USDA FoodData Central SR Legacy reference value. The kcal per 100 g is the Energy figure printed on each record. Every piece weight is the household portion USDA prints on that record page: a 1.55 oz milk chocolate bar is 44 g and a miniature bar 7 g, an ounce of dark chocolate is 28.35 g, the semisweet chocolate serving is 14.5 g, and the butter, creme-filled and sugar cookies are 5 g, 10 g or 15 g, and 17 g each. We add no weights of our own, because a biscuit in an Indian pack may be bigger or smaller than these US cookies: weigh yours, or divide the pack weight by the number of biscuits. Each figure is the grams times the kcal per 100 g in the table, divided by 100, rounded to the nearest kcal. The records are US products. The butter cookie is the nearest USDA row to a butter biscuit and the creme-filled sandwich cookie the nearest to a cream biscuit; neither is the same product as any Indian brand, and we do not claim a row for a glucose or Marie biscuit.

What stands out in the numbers

• Per 100 g the rows run from 464 to 598 kcal: 70-85% dark chocolate is highest at 598, milk chocolate is 535, and the semisweet chocolate and the three cookies are within 19 kcal of each other (464 to 483).
• At the same ounce the order follows the per-100 g order. One ounce (28.35 g, the ounce USDA prints on these records) is about 170 kcal of dark chocolate, 137 of creme-filled cookie, 136 of semisweet chocolate, 132 of butter cookie and 132 of sugar cookie. The milk chocolate record lists no ounce, so by our arithmetic 28.35 g of it is about 152 kcal.
• Per piece the size decides. A 5 g butter cookie is about 23 kcal and a 44 g milk chocolate bar about 235 kcal, because the pieces weigh different amounts; ten 5 g butter cookies would be 50 g, about 234 kcal by our arithmetic.
• Chai and biscuits. Our chai and biscuit guide adds up a daily chai habit from approximate pack-label figures; the USDA record values here are a separate source and are not a replacement for your pack.

How to log it so the numbers hold

• Weigh one piece. Put one biscuit or one chocolate on a kitchen scale once, or divide the pack weight by the count, and scale the table.
• Coatings and fillings are extra. A chocolate-coated, nut, wafer or caramel product, an ice cream bar or a cake with chocolate is not these rows; read the pack or use the closest row.
• Check the cacao percentage. The dark chocolate row is 70-85% cacao and the semisweet row is a different, lower-cacao product; a 50% bar is neither.
• Two rounds a day add up. Log each biscuit or square as it is eaten: a few small pieces are easy to forget and are the same arithmetic as the table.

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 or sugar target: we have not looked up one for any person, so we give none.
• Protein, fat, sugar and other nutrients: this page gives energy only.
• Indian brand biscuits (including glucose and Marie biscuits), rusk, cakes, wafers, ice cream, sweets such as laddu and barfi, cocoa powder and drinking chocolate: not covered here.
• Brand pack labels and FSSAI figures: not used, so the page does not mix label numbers with the records above.
• Anything about weight, health or what these foods 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

• USDA FoodData Central, SR Legacy 170273 (Chocolate, dark, 70-85% cacao solids): Energy 598 kcal per 100 g; household portions printed on the record: 1 oz 28.35 g, 1 bar 101 g (read 27 Oct 2026).
• USDA FoodData Central, SR Legacy 167587 (Candies, milk chocolate): Energy 535 kcal per 100 g; household portions: 1 bar (1.55 oz) 44 g, 1 miniature bar 7 g, 1 cup chips 168 g (read 27 Oct 2026).
• USDA FoodData Central, SR Legacy 172737 (Cookies, vanilla sandwich with creme filling): Energy 483 kcal per 100 g; household portions: 1 round cookie (1-3/4 in) 10 g, 1 oval cookie 15 g, 1 oz 28.35 g (read 27 Oct 2026).
• USDA FoodData Central, SR Legacy 167976 (Candies, semisweet chocolate): Energy 480 kcal per 100 g; household portions: 1 serving 14.5 g, 1 oz (approx 60 pcs) 28.35 g, 1 cup chips 168 g (read 27 Oct 2026).
• USDA FoodData Central, SR Legacy 174950 (Cookies, butter, commercially prepared, enriched): Energy 467 kcal per 100 g; household portions: 1 cookie 5 g, 1 oz 28.35 g (read 27 Oct 2026).
• USDA FoodData Central, SR Legacy 174971 (Cookies, sugar, commercially prepared, regular (includes vanilla)): Energy 464 kcal per 100 g; household portions: 1 cookie 17 g, 1 oz 28.35 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 sums, the rounding, the ounce arithmetic for milk chocolate and the ten-cookie total, and every sentence starting "Our reading" are NYUS's own arithmetic or opinion, not from USDA. Every piece weight in the table is USDA's, printed on the record pages above. Names in the Food column (chocolate, butter biscuit, cream biscuit) are our matching to the USDA record names listed above.

Frequently asked questions