Overnight Oats Calories Calculator
Overnight oats range from 245 calories for a simple almond-milk base to 680 calories when fully loaded with nut butter, banana and honey. Toppings are the key calorie variable.
Overnight Oats Calculator
To burn about 900 kcal you may need roughly:
📊 Data source note: Nutrition values are estimates based on standard food composition databases and common recipe data. Actual values vary by cooking method, oil quantity, ingredient brand, and serving size. See our Data Sources and Methodology pages.
Nutrition Overview
Overnight oats are rolled oats soaked overnight in milk, yogurt or plant-based milk, typically with added fruit, seeds and sweeteners. They are popular as a meal-prep breakfast option for their convenience, fibre content and versatility. Calorie count depends primarily on the liquid used (whole milk vs almond milk), any yogurt added, and toppings. A basic overnight oats recipe runs 300–400 calories; a loaded version with nut butter, banana and honey can reach 600+ calories.
How to use this calculator
Enter the total weight of your prepared overnight oats (oats + liquid + toppings). A typical serving jar holds 300–400g of prepared overnight oats. Weigh at the time of eating for accuracy.
Overnight Oats Calories — Complete Breakdown
| Serving | Calories | Protein | Carbs |
|---|---|---|---|
| Basic overnight oats: 50g oats + 150ml semi-skimmed milk | ~285 kcal | 12g | 40g |
| With 100g 0% Greek yogurt added | ~330 kcal | 23g | 42g |
| With 1 tbsp honey or maple syrup (+52 kcal) | ~380 kcal | 23g | 53g |
| With 1 tbsp peanut butter (+94 kcal) | ~425 kcal | 26g | 42g |
| With banana (medium, 120g) (+107 kcal) | ~437 kcal | 24g | 65g |
| Fully loaded: oats + whole milk + yogurt + PB + banana + honey | ~620–680 kcal | 27g | 80g |
| Overnight oats with almond milk (unsweetened, 150ml) | ~245 kcal | 9g | 39g |
Overnight Oats vs Other Breakfasts
| Breakfast | Calories | Notes |
|---|---|---|
| Overnight oats, basic (50g oats + semi-skimmed milk) | ~285 kcal | Good fibre, moderate protein |
| Porridge (same oats, water) | ~188 kcal | Lowest calorie oat option |
| Granola (50g) + semi-skimmed milk | ~295 kcal | Higher sugar, less protein than yogurt version |
| Avocado toast (2 slices + half avocado) | ~310 kcal | Higher fat, lower carbs |
| Pancakes (3 medium, plain) | ~267 kcal | Lower protein, lower fibre |
🥗 Lower Calorie: Use 150ml unsweetened almond milk instead of semi-skimmed dairy milk. Saves approximately 50 calories and makes the recipe dairy-free. The oats absorb almond milk well overnight.
💪 Higher Protein: Add 100g 0% Greek yogurt to the base recipe before any toppings. This adds 10–11g protein for approximately 55 calories — one of the highest protein-per-calorie additions available.
🔄 Smarter Swap: Replace honey or maple syrup with 80g of fresh mixed berries. Berries add natural sweetness, fibre and vitamins at 40–50 calories vs 52 calories for a tablespoon of honey — with a significantly better nutritional profile.
Burn This Food
To burn ~330 kcal (70 kg adult):
| Activity | Duration |
|---|---|
| Brisk walking | ~1 hr 15 min |
| Jogging | ~38 min |
| Cycling | ~47 min |
| Swimming | ~44 min |
FAQs
How many calories in overnight oats?
A basic overnight oats recipe (50g oats + 150ml semi-skimmed milk) contains approximately 285 calories. With Greek yogurt added: approximately 330 calories. Fully loaded with nut butter, banana and honey: 600–680 calories.
Are overnight oats good for weight loss?
Yes — overnight oats are high in soluble fibre (beta-glucan from oats), which slows digestion and promotes satiety. A 285–330 calorie breakfast with good fibre and protein content is a solid choice for calorie-controlled eating. The key is controlling toppings and sweeteners.
How many calories in overnight oats with almond milk?
Replacing 150ml semi-skimmed dairy milk with 150ml unsweetened almond milk saves approximately 50 calories, bringing the basic recipe to approximately 235–245 calories. With 0% Greek yogurt added: approximately 285 calories.
Can I eat overnight oats every day?
Yes — overnight oats are a nutritionally solid daily breakfast. Oats provide beta-glucan fibre for cholesterol management, and the combination with Greek yogurt provides sustained protein. Varying toppings (different fruits, seeds) maintains nutritional diversity.
📊 Data source: USDA FoodData Central. Values are estimates. See Methodology.