World Famous Fries Calories & Nutrition Facts

340 calories World Famous Fries (Medium)

Protein: 4g
Carbs: 44g
Fat: 16g
Sodium: 190mg

McDonald's fries in all four published sizes, so you can see exactly what going up a size costs.

McDonald's publishes 4 versions of this, running from 110 calories (World Famous Fries (Kids)) up to 510 calories (World Famous Fries (Large)).

Every published World Famous Fries version

Version	Serving	Calories	Fat (g)	Carbs (g)	Protein (g)	Sodium (mg)
World Famous Fries (Kids)	1.3 oz (38 g)	110	5	15	1	65
World Famous Fries (Small)	2.6 oz (75 g)	230	11	30	2	130
World Famous Fries (Medium)	3.9 oz (111 g)	340	16	44	4	190
World Famous Fries (Large)	5.9 oz (168 g)	510	24	67	6	290

How it compares

Published figures from each chain's own nutrition data.

McDonald's World Famous Fries (Medium) 340 calories

Burger King Onion Rings (Medium) 360 calories Chick-fil-A Waffle Potato Fries (Medium) 420 calories In-N-Out French Fries 360 calories

About the World Famous Fries

McDonald's fries have been reformulated more than once, and the two changes people still argue about are both documented.

Until 1990 they were cooked in a mixture of about 93% beef tallow and 7% cottonseed oil. The switch to vegetable oil is the reason people who ate them before 1990 insist they tasted different — they did.
They stopped being cut fresh in store in 1967, when Ray Kroc contracted the J.R. Simplot Company to supply them frozen. Simplot had commercialised the frozen chip in the 1940s.

Frequently Asked Questions

How many calories are in a large McDonald's fries?

510 calories.

How many calories are in a medium McDonald's fries?

340 calories.

How many calories are in a small McDonald's fries?

230 calories.

How much does going from medium to large fries cost in calories?

170 calories — a medium is 340 and a large is 510.

Build a full meal

Add a World Famous Fries to a whole order and see the running total on the McDonald's calculator, or see every McDonald's item.

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CalorieLookup.com is not affiliated with, endorsed by, or sponsored by McDonald's. Nutrition figures on this page are McDonald's' own published data (McDonald's USA official nutrition facts (complete menu export). Live scraping of mcdonalds.com/us/en-us/product/* consistently timed out during this update, so figures are drawn from a McDonald's-sourced full-menu nutrition dataset (covering every published category and serving size) cross-checked against McDonald's own per-item pages where reachable.), last verified 2026-08-19. Historical details are drawn from public reference sources. Menu items and recipes change over time and vary by location — confirm with the restaurant before making dietary decisions.