1800-Calorie Vegan Meal Plan: 7-Day Guide (with B12 Guidance)

Medical Disclaimer: This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Always consult a registered dietitian, physician, or qualified healthcare provider before making significant changes to your diet, especially if you have a medical condition, take medication, are pregnant or nursing, or are managing a chronic illness.

Vegan diets require careful planning to meet vitamin B12, vitamin D, omega-3, iron, calcium, and iodine targets. Individual results may vary.

1800-Calorie Vegan Meal Plan: An Honest 7-Day Guide

A well-planned 1800-calorie vegan meal plan can meet the nutritional needs of most adults, according to the 2016 Academy of Nutrition and Dietetics position paper on vegetarian diets, which found appropriately planned vegan patterns are healthful and may lower risk of heart disease, type 2 diabetes, and certain cancers (1).

The catch is planning. Vegan diets do not deliver vitamin B12 without a supplement or reliably fortified food, and iron, calcium, iodine, omega-3, vitamin D, and zinc all need attention at 1800 kcal.

Non-Negotiable: Vitamin B12 Supplementation

Vitamin B12 is produced by bacteria, not plants. Every credible clinical body agrees that vegans must supplement B12 or eat B12-fortified foods every day (2). Long-term deficiency causes irreversible nerve damage, so this is not optional.

• Adult vegans 19 to 65: either 25 to 100 mcg daily cyanocobalamin, or 1000 mcg two or three times weekly, or reliable fortified foods (nutritional yeast, plant milk, breakfast cereals) providing at least the equivalent daily.
• Vegans over 65: higher doses (500 to 1000 mcg daily) because absorption drops with age.
• Pregnancy or lactation: continue supplementation; work with a prenatal dietitian.
• Signs of possible deficiency: fatigue, tingling in hands or feet, memory changes, glossitis. Ask your clinician for serum B12 and methylmalonic acid tests rather than self-diagnosing.

How the Macros Work at 1800 Calories

The plan uses roughly 55 percent carbohydrate, 15 to 18 percent protein, and 28 to 30 percent fat, a distribution the AND position paper flags as typical of well-designed vegan diets (1). Practically that is about 250 g carb, 75 to 85 g protein, and 55 to 60 g fat per day.

• Carbohydrate: 240 to 260 g, mostly whole grains, legumes, fruit, and starchy vegetables. Fiber goal 35 to 45 g per day; vegan diets typically hit this easily.
• Protein: 75 to 85 g. About 1.1 g per kg body weight for a 150 lb adult. Plant protein digestibility is lower, so hit the higher end if you exercise.
• Fat: 55 to 60 g. Include a daily source of ALA omega-3 (2 tbsp ground flax, or 1 tbsp chia, or 30 g walnuts).
• Omega-3 EPA/DHA: conversion from ALA is limited (5 to 10 percent). Consider a 250 to 500 mg per day algae-derived DHA+EPA supplement, especially for adults over 40 (3).
• Iron: vegan RDA is 1.8 times the omnivore RDA (about 32 mg for menstruating women, 14 mg for men) because non-heme iron is less bioavailable (4). Pair every iron-rich meal with vitamin C.
• Calcium: aim for 1000 mg (1200 mg after age 50). Fortified plant milks, calcium-set tofu, kale, tahini.
• Iodine: add 1/4 tsp iodized salt daily, or a multivitamin with iodine; sea vegetables can work but iodine varies widely.
• Zinc: lentils, pumpkin seeds, cashews, hemp seeds, oats.
• Vitamin D: 600 to 1000 IU per day, higher in winter or northern latitudes (5).

Tested Values Used in This Plan

Values from USDA FoodData Central. Plant milks and nutritional yeast vary widely by brand; check labels for exact fortification. Cooked weights used for grains and legumes.

7-Day 1800-Calorie Vegan Meal Plan

Day 1 (approx. 1810 kcal, 80 g protein, 30 mg iron, 1100 mg calcium)

• Breakfast (430 kcal, 20 g protein): Maple-banana-peanut butter-chocolate smoothie: 240 ml fortified soy milk, 1 medium banana (120 g), 2 tbsp peanut butter (32 g), 10 g cocoa, 1 tsp maple syrup, 15 g whey-free pea protein powder.
• Snack (170 kcal, 6 g protein): Carrots (150 g) with 60 g hummus.
• Lunch (485 kcal, 20 g protein): Grain-free tabbouleh: 150 g cooked quinoa, 60 g cucumber, 60 g tomato, 60 g parsley, 30 g mint, 1/2 avocado (75 g), 90 g cooked chickpeas, 1 tsp olive oil, lemon.
• Snack (280 kcal, 4 g protein): 1 cup grapes (150 g) with 2 apple cinnamon bites (60 g total: dates, oats, almonds, apple).
• Dinner (445 kcal, 20 g protein): Apple-pecan steel-cut oats: 50 g dry steel-cut oats cooked in 240 ml fortified soy milk with 100 g diced apple, 28 g pecans, cinnamon; plus pan-fried broccoli (150 g) in 1 tsp olive oil.

Day 2 (approx. 1795 kcal, 78 g protein, 26 mg iron, 1050 mg calcium)

• Breakfast (400 kcal, 15 g protein): Scottish oatmeal porridge: 60 g dry rolled oats in 240 ml fortified soy milk, topped with 150 g strawberries and 15 g chia seeds.
• Snack (240 kcal, 8 g protein): Peanut butter (32 g / 2 tbsp) on 100 g celery sticks.
• Lunch (405 kcal, 15 g protein): Grape and peanut butter celery lunch: 200 g grapes plus 200 g celery sticks with 32 g peanut butter and 30 g roasted chickpeas.
• Snack (170 kcal, 2 g protein): 2 cups blueberries (300 g).
• Dinner (580 kcal, 24 g protein): Pasta Pascal: 150 g cooked whole-wheat pasta, 120 g cooked lentils, 100 g cherry tomato, 30 g kalamata olives, 1 tbsp olive oil, garlic, basil, 15 g nutritional yeast.

Day 3 (approx. 1805 kcal, 62 g protein, 22 mg iron, 900 mg calcium)

• Breakfast (240 kcal, 6 g protein): Essential vegetable juice (200 ml carrot-beet-ginger) plus 1 medium orange (130 g) and 15 g pumpkin seeds.
• Snack (280 kcal, 7 g protein): Cantaloupe (200 g) with 28 g almonds.
• Lunch (490 kcal, 15 g protein): Two medium bananas (240 g) with 1 medium apple (150 g) and 2 tbsp almond butter (32 g).
• Snack (240 kcal, 8 g protein): Peanut butter (32 g) with 100 g celery.
• Dinner (555 kcal, 26 g protein): Fresh tomato pasta with tempeh: 150 g cooked whole-wheat pasta, 200 g crushed fresh tomato, 100 g tempeh cubes browned in 1 tsp olive oil, garlic, basil, plus 100 g sauteed collard greens in 1 tsp olive oil.

Day 4 (approx. 1810 kcal, 70 g protein, 28 mg iron, 1000 mg calcium)

• Breakfast (300 kcal, 8 g protein): Mango-oat smoothie: 150 g mango, 40 g rolled oats, 240 ml fortified soy milk, 10 g chia seeds, plus 2 cups blueberries (300 g) on the side.
• Snack (195 kcal, 3 g protein): Pecans (28 g / 1 oz).
• Lunch (490 kcal, 22 g protein): Spring radish and chickpea salad: 100 g radishes, 100 g cucumber, 150 g cooked chickpeas, 60 g arugula, 15 g pumpkin seeds, 1 tbsp olive oil, plus 100 g red bell pepper strips with 60 g hummus.
• Snack (240 kcal, 8 g protein): Peanut butter (32 g) with 100 g celery.
• Dinner (585 kcal, 29 g protein): Pasta Pascal: 150 g cooked whole-wheat pasta, 120 g cooked lentils, 100 g cherry tomato, 1 tbsp olive oil, 15 g nutritional yeast.

Day 5 (approx. 1800 kcal, 68 g protein, 24 mg iron, 950 mg calcium)

• Breakfast (355 kcal, 10 g protein): Two cups mango smoothie: 200 g mango, 240 ml fortified soy milk, 10 g chia, plus 2 medium oranges (260 g).
• Snack (215 kcal, 8 g protein): Arugula salad (60 g) with 100 g red bell pepper strips and 60 g hummus, 1 tsp olive oil.
• Lunch (440 kcal, 14 g protein): Cool cucumber-tomato salad: 200 g cucumber, 200 g tomato, 60 g red onion, 30 g feta-style vegan cheese, 1 tbsp olive oil, plus 150 g carrots with 60 g hummus.
• Snack (285 kcal, 8 g protein): Banana (120 g) with 2 tbsp peanut butter (32 g) and 15 g raisins.
• Dinner (505 kcal, 28 g protein): Garlic green beans with tofu: 200 g green beans, 200 g firm calcium-set tofu, garlic, 1 tbsp low-sodium soy sauce, 1 tsp sesame oil, 15 g cashews, over 100 g cooked brown rice.

Day 6 (approx. 1810 kcal, 72 g protein, 25 mg iron, 1080 mg calcium)

• Breakfast (410 kcal, 15 g protein): Avocado sandwich: 1/2 avocado (75 g) mashed on 2 slices whole-grain bread (60 g), 60 g arugula, 2 tsp hemp seeds, 15 g nutritional yeast.
• Snack (215 kcal, 6 g protein): Pan con tomate: 30 g whole-grain bread rubbed with 60 g fresh tomato and 1 tsp olive oil, plus 30 g almonds.
• Lunch (465 kcal, 14 g protein): Lettuce, cucumber, and walnut salad: 100 g romaine, 150 g cucumber, 30 g walnuts, 100 g cooked chickpeas, 30 g raisins, 1 tbsp olive oil, lemon.
• Snack (185 kcal, 8 g protein): Bell pepper (150 g) with 60 g hummus.
• Dinner (535 kcal, 24 g protein): Coconut curry with lentils and sweet potato: 100 g cooked red lentils, 150 g microwaved sweet potato cubes, 60 ml light coconut milk, 100 g spinach, curry spices, plus 60 g brown rice.

Day 7 (approx. 1815 kcal, 78 g protein, 28 mg iron, 1150 mg calcium)

• Breakfast (355 kcal, 16 g protein): Spinach-banana-chia smoothie: 60 g spinach, 1 banana (120 g), 15 g chia seeds, 240 ml fortified soy milk, plus 1 medium apple (150 g).
• Snack (240 kcal, 8 g protein): Peanut butter (32 g) with 100 g celery.
• Lunch (485 kcal, 20 g protein): Grain-free tabbouleh: 150 g cooked quinoa, 60 g cucumber, 60 g tomato, 60 g parsley, 1/2 avocado (75 g), 90 g cooked chickpeas, 1 tsp olive oil, lemon.
• Snack (195 kcal, 3 g protein): Pecans (28 g / 1 oz).
• Dinner (540 kcal, 31 g protein): Garlic broccoli tofu: 200 g firm tofu, 200 g broccoli, garlic, ginger, 1 tbsp low-sodium soy sauce, 1 tsp sesame oil, plus 100 g boiled spinach with lemon and 60 g quinoa.

Weekly Summary

Weekly average lands near 1805 kcal and 73 g protein, with fiber over 35 g every day and iron consistently near or above vegan RDA targets when meals pair legumes and vitamin C sources.

Add a daily B12 supplement, an algae DHA+EPA supplement, and iodized salt to close the remaining micronutrient gaps.

The Six Vegan Nutrients to Track

1. Vitamin B12: non-negotiable supplement. See section above.
2. Omega-3 EPA and DHA: ALA from flax, chia, walnuts provides the parent fat, but conversion is only 5 to 10 percent. Algae-derived DHA+EPA 250 to 500 mg per day covers the shortfall (3).
3. Iron: RDA is 1.8x higher for vegans (4). Pair lentils and beans with bell peppers, citrus, or strawberries at the same meal. Skip tea and coffee within an hour of iron-heavy meals.
4. Calcium: fortified plant milks, calcium-set tofu, tahini, kale, and figs. Aim for 1000 to 1200 mg per day.
5. Vitamin D: RDA is 600 IU (800 IU over 70). Supplement 1000 to 2000 IU per day if sun exposure is low (5).
6. Iodine and zinc: 1/4 tsp iodized salt daily; oats, lentils, cashews, pumpkin seeds for zinc.

Smart Swaps and Shopping Notes

• Choose calcium-set tofu (labeled “calcium sulfate”) over other coagulants for triple the calcium.
• Fortified soy milk is the closest plant milk match for cow’s milk on protein (7 to 9 g per cup). Almond and oat milks are much lower in protein.
• Sprout, soak, or ferment beans and grains to improve mineral bioavailability.
• Nutritional yeast fortified with B12 is a useful backup, but do not use it as your only B12 source without checking label content and eating it daily.
• Batch-cook lentils, chickpeas, and brown rice once a week to save time.

What to Expect

• Week 1: more frequent bathroom trips as fiber jumps; possible bloating for 5 to 10 days as the gut adjusts.
• Weeks 2 to 6: steady energy, easier weight loss for people transitioning from processed diets (roughly 0.5 to 1 lb per week at 1800 kcal for most sedentary adults).
• Weeks 8 to 12: good time to check B12, ferritin, and 25-hydroxyvitamin D labs to confirm supplementation is adequate.

Frequently Asked Questions

Is 1800 calories enough on a vegan diet?

For most sedentary or lightly active adults, yes: 1800 kcal creates a small daily deficit for many and near-maintenance for taller or more active people. Very active adults may need 2100 to 2500 kcal.

Do I really need a B12 supplement if I eat fortified foods?

Yes, unless you eat fortified foods every day at label-verified doses. Missing days quickly leaves you short. A weekly 1000 to 2000 mcg supplement is a simple backstop and is safe at typical doses (2).

Will I get enough protein at 1800 calories?

Yes, if you anchor two meals with legumes or soy foods (tofu, tempeh, lentils, chickpeas) and add nuts, seeds, and fortified soy milk. This plan lands at 62 to 80 g daily. Active adults should push toward 90 g by using tempeh, seitan, or a scoop of pea or soy protein.

How do I get enough calcium without dairy?

Fortified plant milks (soy, almond, oat) deliver 300 to 450 mg per cup. Calcium-set tofu adds 350 to 500 mg per 150 g serving. Tahini, kale, bok choy, and figs top up the rest. This plan hits 900 to 1150 mg per day.

Do I need omega-3 EPA and DHA supplements?

Most experts say yes for long-term vegans, especially adults over 40 or those with cardiovascular risk. Algae-derived DHA+EPA 250 to 500 mg per day matches fish oil without the fish (3).

Can I do this plan while pregnant or breastfeeding?

Yes with tight planning, but only under a prenatal dietitian’s care. Iron, iodine, choline, DHA, and B12 needs all rise. This 1800-calorie level is likely insufficient in the second and third trimesters or during nursing.

What if I feel tired all the time?

Fatigue on a vegan diet most often points to iron, B12, or vitamin D. Ask your clinician for a ferritin, serum B12, and 25-hydroxyvitamin D panel before self-treating with supplements. Do not chronically dose iron without testing.

Disclaimer

This article is educational and does not replace individualized medical or nutrition care. Vegan diets require daily B12 supplementation and attention to iron, calcium, iodine, vitamin D, and omega-3 EPA/DHA. This 1800-calorie plan is not written for pregnancy or lactation, growing children, adolescents, competitive athletes, or adults with iron-deficiency anemia, chronic kidney disease, or malabsorption disorders. Consult a registered dietitian, especially one experienced in vegan nutrition, before starting. Not medical advice.