How to Eat 100 g of Protein a Day
100 g of protein is 400 kcal of protein. This guide shows what it looks like in meals, what it means at different body weights, and two ways to build it from whole foods.
Created by Roman Leshchuh, founder of Mealyno. Numbers from USDA FoodData Central, published ranges and the plan library. Method. Updated September 2026.
These are general estimates generated from published formulas, not a medical prescription. Not reviewed by a doctor or registered dietitian.
Read the full disclaimer
Every number on this page (calorie targets, macro splits and any suggested meal plan) is produced by formulas (Mifflin-St Jeor for basal metabolic rate, standard activity multipliers) or, for AI-generated meal plans, by a language model applying those same formulas. On meal-plan pages the carbohydrate figure for each meal is calculated by difference: total calories minus protein and fat calories, divided by 4. It is not measured or estimated on its own, so read it as an arithmetic balance and not as an independent nutritional analysis of the dish. None of it is individualized medical or nutritional advice, and none of it has been reviewed by a registered dietitian, physician or other licensed healthcare professional.
Ask your doctor or a registered dietitian what is right for you before starting a new diet, especially if you are pregnant or breastfeeding, have a diagnosed medical condition, take prescription medication, or have a history of disordered eating. If you have kidney disease or another medical condition, ask your clinician before raising protein.
Mealyno never recommends a calorie target below your calculated Basal Metabolic Rate (BMR), the minimum energy your body needs at complete rest. Even the most aggressive weight-loss setting is clamped at that floor.
Calorie and BMR estimates use the Mifflin-St Jeor equation (Mifflin MD, St Jeor ST, et al. Am J Clin Nutr. 1990).
Generated: September 2026
The short answer
100 g of protein a day is 400 kcal of protein. At 1,400 kcal that is 29% of your calories, at 1,600 kcal it is 25%, and at 2,000 kcal it is 20%. Split over four meals it is about 25 g a meal, and the ISSN position stand gives 20 to 40 g per meal as a published reference.
It is a common first target and it is reachable with ordinary food, no supplements needed. For adults between about 60 and 80 kg it works out to 1.25 to 1.67 g per kilogram, which overlaps the joint advisory range for weight loss.
What 100 g means at your body weight
Published protein ranges are per kilogram of body weight, so the same 100 g is a different target for different people. The table divides 100 g by five body weights and shows which published ranges include the result: the recommended allowance and its upper bound (0.8 to 1.2 g/kg), the joint advisory for weight reduction (1.2 to 1.6 g/kg) and the ISSN position stand for exercising adults (1.4 to 2.0 g/kg).
| Body weight | g per kg | Published ranges that include it |
|---|---|---|
| 55 kg | 1.82 | ISSN, exercising adults (1.4 to 2.0) |
| 65 kg | 1.54 | Joint advisory, weight reduction (1.2 to 1.6); ISSN, exercising adults (1.4 to 2.0) |
| 75 kg | 1.33 | Joint advisory, weight reduction (1.2 to 1.6) |
| 85 kg | 1.18 | RDA and its upper bound (0.8 to 1.2) |
| 95 kg | 1.05 | RDA and its upper bound (0.8 to 1.2) |
Split it across the day
Total daily intake is the main number, and the per-meal figure helps you plan it. Four meals of about 25 g each reach 100 g without any single meal being unusually large. The table shows the split for three, four and five meals and whether each meal falls inside the 20 to 40 g band.
| Meals a day | Protein per meal | Inside 20 to 40 g? |
|---|---|---|
| 3 | 33 g | Yes |
| 4 | 25 g | Yes |
| 5 | 20 g | Yes |
Three example days from real plans
These days come from Mealyno's plan library, where every plan has passed a numeric check. Each day is at or above 100 g of protein at about 1,600 kcal. No meal is resized: what you see is what the library contains. If a combination has no matching day, the section says so and links the closest full plan.
Any foods
Around 1600 kcal, at or above 100 g of protein
7 of 7 days match in the library at this level. Day 1 is shown; the full week is in the plan below.
| Meal | kcal | Protein |
|---|---|---|
| Chia Seed Pudding with Protein PowderBreakfast | 360 | 28 g |
| Leftover Turkey Meatballs and PastaLunch | 450 | 38 g |
| Edamame Beans in PodsSnack | 180 | 16 g |
| Grilled Steak with Roasted Sweet PotatoDinner | 510 | 42 g |
| Total | 1500 | 124 g |
Vegetarian
Around 1600 kcal, at or above 100 g of protein
No day in the library matches this combination at this level. The closest full plan is linked below.
Open the closest full plan: 1600 kcal, vegetarianSmall meals (5 meals of 450 kcal or less)
Around 1600 kcal, at or above 100 g of protein
7 of 7 days match in the library at this level. Day 1 is shown; the full week is in the plan below.
| Meal | kcal | Protein |
|---|---|---|
| Egg White Omelet with MushroomsBreakfast | 180 | 24 g |
| Baked Chicken Breast with SpinachLunch | 320 | 44 g |
| Canned tuna in water with pepperSnack | 160 | 32 g |
| Grilled Chicken Breast with AsparagusDinner | 430 | 52 g |
| Greek Yogurt Parfait with AlmondsSnack | 450 | 42 g |
| Total | 1540 | 194 g |
Two ways to build 100 g from whole foods
The amounts below are one arrangement, not a rule. Protein and calories are computed from USDA FoodData Central values per 100 g, in the cooking state named in each row. The first build includes meat and fish. The second is vegetarian and uses dairy, eggs, tofu, tempeh and legumes.
| Food | Amount (g) | Protein (g) | kcal |
|---|---|---|---|
| Greek yogurt, plain, nonfat | 150 | 15.3 | 89 |
| Egg, hard-boiled | 100 | 12.6 | 155 |
| Chicken breast, roasted | 100 | 31 | 165 |
| Cottage cheese, 1% fat | 100 | 12.4 | 72 |
| Salmon (Atlantic, farmed), cooked | 100 | 22.1 | 206 |
| Lentils, boiled | 100 | 9 | 116 |
| Total | 650 | 102.4 | 803 |
Values from USDA FoodData Central per 100 g in the state named in the row.
| Food | Amount (g) | Protein (g) | kcal |
|---|---|---|---|
| Greek yogurt, plain, nonfat | 200 | 20.4 | 118 |
| Egg, hard-boiled | 100 | 12.6 | 155 |
| Tofu, firm | 150 | 25.9 | 216 |
| Cottage cheese, 1% fat | 150 | 18.6 | 108 |
| Lentils, boiled | 200 | 18 | 232 |
| Almonds | 30 | 6.3 | 174 |
| Total | 830 | 101.8 | 1003 |
Values from USDA FoodData Central per 100 g in the state named in the row.
Common mistakes at 100 g
- Leaving breakfast almost protein-free and trying to catch up at dinner.
- Counting a food by its total weight instead of its protein: 100 g of roasted chicken breast has about 31 g, while 100 g of boiled lentils has about 9 g.
- Mixing raw and cooked weights in the same day.
- Chasing the number and ignoring calories, which the calorie calculator sets.
Where to go next
Use the protein calculator to set a range for your own weight and goal, then open the plan closest to your calories. The 30 g guide shows single-meal portions, and the ranking page lists foods by protein per 100 kcal for when calories are tight.
Want days like these with your own foods and calories?
Get a plan freeEating 100 g of protein: questions
Is 100 g of protein a day enough?
It depends on body weight and goal. At 75 kg, 100 g is 1.33 g per kilogram. Published ranges are 0.8 to 1.2 g per kilogram for healthy adults, 1.2 to 1.6 during weight reduction and 1.4 to 2.0 for people who exercise. Use your own weight in the protein calculator.
How many meals should I split 100 g across?
Three to five. Four meals give about 25 g each, and the ISSN position stand gives 20 to 40 g per meal as a reference.
Can I reach 100 g as a vegetarian?
Yes. The second build on this page uses dairy, eggs, tofu, tempeh and legumes. The library may show fewer vegetarian example days at this level, and the page says so when that happens.
How many calories is 100 g of protein?
Protein counts 4 kcal per gram, so 100 g is 400 kcal, which is 25% of a 1,600 kcal day.
Do I weigh food raw or cooked?
Use the state named in the table and stay consistent. Cooked chicken has more protein per 100 g than raw chicken because cooking removes water, so mixing the two skews the total.
Is a high-protein diet safe?
These ranges are general guidance for healthy adults. If you have kidney disease or another medical condition, ask your clinician before raising protein.
Sources
- Jäger R, et al. International Society of Sports Nutrition position stand: protein and exercise. J Int Soc Sports Nutr, 2017.
- Nutritional priorities to support GLP-1 therapy for obesity. ACLM, ASN, OMA, TOS. Am J Clin Nutr, 2025 (guideline synthesis and expert opinion, not trials in people on these medicines).
- U.S. Department of Agriculture, Agricultural Research Service. FoodData Central, 2019. fdc.nal.usda.gov.Licence: CC0 1.0 (public domain). Fetched 2026-09-29.