Zucchini Bread: Calories, Nutrition and Health Benefits

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One 61 g slice of homemade zucchini bread has about 200 calories, 25 g carbs, 13 g sugar, 10 g fat and 3 g protein.

Quick Nutrition Facts

Per 1 slice (61 g)

Nutrient	Amount
Calories	200 kcal
Protein	3g
Carbohydrates	25g
Fiber	1g
Sugars	13g
Fat	10g
Sodium	65 mg

Macronutrient Breakdown

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NUTRITIONIST'S INSIGHT

A slice of zucchini bread is a cake-like quick bread: 13 g of the 25 g carbs are added sugar, which is about half a day's allowance for a woman under the American Heart Association's 25 g limit. The zucchini adds moisture but only 1 g of fiber per slice, so the vegetable does little for the nutrition. The 10 g of fat comes mostly from oil, with just 1 g saturated, and protein is low at 3 g. Calories swing with the recipe: the UMaine slice is 200 kcal, while a bigger or oilier slice can reach 230 kcal or more. It fits as a planned snack with eggs, yogurt or nut butter, not as a health food.

Myth Busters

MYTH #1: Zucchini bread counts as a vegetable serving.

TRUTH: The zucchini is a small part of the loaf. A 61 g slice has only 1 g of fiber and 13 g of added sugar, so it is a sweet baked good with a little vegetable inside. Zucchini Bread Food Nutrition Facts Label: University of Maine Cooperative Extension

MYTH #2: Zucchini bread is low in sugar because it is made with a vegetable.

TRUTH: The UMaine label lists 13 g of sugars per slice, all added sugars. That is about 52% of the 25 g daily added sugar limit the American Heart Association suggests for most women. Zucchini Bread Food Nutrition Facts Label: University of Maine Cooperative Extension; Added Sugars: American Heart Association

MYTH #3: It has far fewer calories than banana bread.

TRUTH: They are close. Zucchini bread is about 200 kcal for a 61 g slice and FatSecret lists banana bread at 227 kcal per serving, so the gap is under 30 kcal and depends on the recipe and slice size. Zucchini Bread Food Nutrition Facts Label: University of Maine Cooperative Extension; Banana bread (generic): FatSecret Australia

MYTH #4: Every recipe has the same calories as the label figure.

TRUTH: Recipes differ. FatSecret's generic 40 g serving is 150 kcal, which scales to about 229 kcal at 61 g, so oil, sugar and slice size can move a slice by 30 kcal or more. Zucchini Bread Food Nutrition Facts Label: University of Maine Cooperative Extension; Zucchini bread (generic): FatSecret Australia

NutriScore by Health Goals

Health Goal	NutriScore	Why This Score?
Weight Loss		200 kcal is about 10% of a 2,000 kcal day for a small slice with little protein or fiber, so it fills you up less than its calories suggest. It works if you stay at one slice. Zucchini Bread Food Nutrition Facts Label: University of Maine Cooperative Extension
Muscle Gain		3 g of protein for 200 kcal is about 1.5 g per 100 kcal, which is low. Pair it with eggs, Greek yogurt or milk. Zucchini Bread Food Nutrition Facts Label: University of Maine Cooperative Extension
Blood Sugar Control		25 g of carbs with 13 g of added sugar and 1 g of fiber is mostly fast carbohydrate, so it raises blood sugar without much to slow it. Zucchini Bread Food Nutrition Facts Label: University of Maine Cooperative Extension; Glycemic index and glycemic load for 100+ foods: Harvard Health
Heart Health		Saturated fat is only 1 g and sodium is 65 mg per slice, both low. The added sugar is the main drawback. Zucchini Bread Food Nutrition Facts Label: University of Maine Cooperative Extension; Added Sugars: American Heart Association
General Health		A reasonable occasional treat with some fat from oil and a little vegetable, but it is a sweet baked good with 13 g of added sugar. Zucchini Bread Food Nutrition Facts Label: University of Maine Cooperative Extension; Added Sugars: American Heart Association

PERSONALIZED NUTRITION

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Blood Sugar Response to Zucchini Bread

A 61 g slice has 25 g of carbs, 13 g of them added sugar and only 1 g of fiber, so blood sugar usually rises within the first hour and peaks at about 60 minutes. The 10 g of oil slows stomach emptying a little, which keeps the peak lower than the same carbs from a sugary drink. Eating the slice on its own, especially with a coffee that has sugar, pushes the peak higher. Glycemic index and glycemic load for 100+ foods: Harvard Health; Zucchini Bread Food Nutrition Facts Label: University of Maine Cooperative Extension

Estimated Glucose Response (1 slice of zucchini bread)

Illustrative curve for a healthy adult, built from the carb load and fiber content of the label. Individual responses vary with portion, recipe, prior activity and metabolic health. Not medical advice.

How to flatten the spike

Eat the slice with eggs, Greek yogurt or nut butter so protein and fat slow the rise.
Keep to one slice and skip sugar in the coffee or tea that goes with it.
Have it after a meal, not on an empty stomach.
Take a 10 to 15 minute walk afterwards.

Cultural Significance

Zucchini bread is a North American home-baking classic, popular in late summer when garden zucchini outgrows the household. Cooks grate the surplus into a spiced quick bread, often with cinnamon and walnuts, to use it up. University extension services such as UMaine publish tested recipes for it.

Compare & Substitute

Zucchini Bread vs Similar Foods

Nutrient	Banana bread, 1 serving (FatSecret Australia)	Zucchini bread, 40 g serving (FatSecret Australia)
Calories	227 kcal	150 kcal
Protein	4.71g	2.1g
Carbohydrates	39.03g	18.86g
Fat	6.67g	7.49g

Frequently Asked Questions

How many calories are in a slice of zucchini bread?

The University of Maine Cooperative Extension label lists 200 calories for one 61 g slice of its recipe. FatSecret Australia lists 150 calories for a smaller 40 g serving, so a slice runs from about 150 to 230 kcal depending on size and recipe.

How much sugar is in a slice of zucchini bread?

The UMaine label shows 13 g of sugars per 61 g slice, all added. The American Heart Association suggests no more than 25 g of added sugar a day for most women, so one slice uses about half of that.

Is zucchini bread healthy?

It is a sweet baked good. A slice has 200 kcal, 1 g of saturated fat and 65 mg of sodium, which are modest, but it also has 13 g of added sugar, 1 g of fiber and 3 g of protein. One slice as an occasional snack fits most diets.

How many carbs are in zucchini bread?

One 61 g slice has 25 g of carbohydrate on the UMaine label, with 1 g of fiber, so about 24 g of net carbs. It is not a low-carb food.

How can I lower the calories in zucchini bread?

Cut thinner slices, since a 40 g slice is about 150 kcal against 200 kcal for 61 g. At home you can also reduce the sugar and replace part of the oil with applesauce, which lowers calories but changes the texture.