How Many Calories in a Mars Bar
There are 228 calories in a standard size Mars Bar, 151 calories in a Snacksize bar, 80 calories in a Funsize and 355 calories in a Duo pack.
The nutritional profiles of all sizes of Mars bar are very similar, so here's the breakdown across all sizes plus calories in individual sizes, including multipack bars.
Calorie and Nutrition Info for a standard (51g) Mars Bar
| Source: WLR Food Database
Percentage of Calories from Each Macronutrient
Syns in Different Mars Bar Sizes
Using the calories divided by 20 formula gives 11.5 syns for a standard Mars Bar, 7.5 for a Snacksize and 4 for a Funsize.*
Traffic Light Info for Mars Bars
Calories in Different Mars Bar Sizes
|Funsize Mars (18g)||80|
|Snacksize Mars (33.8g)||151|
|Multipack Mars (39.4g)||177|
|Standard Bar (51g)||228|
|Mars Duo Pack (78.8g)||355|
|1 Bar of Duo Pack (39.4g)||177|
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The calorie and nutrition data provided here are from the Weight Loss Resources verified UK food database.
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Mars Bar Nutrition Info per 100g
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* Syns are a measurement created by Slimming World. The syn values given here are calculated from our research of various sources and a popular formula (calories divided by 20) that works for most products.
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