Tag: Mars bar sizes

The standard Mars bar sold in the UK and much of Europe today weighs 51 grams, a significant reduction from its heavier versions of the past. This article explores the precise weight of a single Mars bar and the factors contributing to its evolution over the decades.

A single 39.4g Mars bar from a UK multipack contains approximately 174 calories, providing a close estimate for a 40g serving size. However, regional variations mean that the exact calorie count for a 40g Mars bar can differ slightly. This guide provides a detailed look at the energy content and other nutritional information associated with this popular snack size.