Input Data
Results
Enter your details on the left and press Calculate keto macros to view results here.
Example keto macro calculation
Illustration using the same method as this calculator for a typical strict ketogenic plan.
| Parameter | Example value | Notes |
|---|---|---|
| Sex | Male | Standard adult example |
| Age | 35 years | Moderately active office worker |
| Height | 178 cm | Metric input |
| Weight | 80 kg | Starting body weight |
| Body fat | 20% | Used to estimate lean body mass |
| Activity level | Moderately active (1.55) | Training three to five days weekly |
| Goal | Lose fat faster (0.8) | Approximately 20% calorie deficit |
| Net carbs | 25 g/day | Strict ketogenic carbohydrate target |
| Protein factor | 1.8 g/kg reference mass | Applied to lean mass in this example |
| Estimated macros | 25 g carbs, 115 g protein, 179 g fat | ≈ 2,173 kcal/day, about 5/21/74 percentages |
Formulas used in this keto macro calculator
The calculator first estimates your basal metabolic rate (BMR), then adjusts for activity and goal to obtain target calories. From there, macros are allocated.
-
BMR without body fat:
Mifflin–St Jeor equations
Men: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5
Women: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age − 161 -
BMR with body fat:
Katch–McArdle equation
Lean body mass (kg) = weight(kg) × (1 − bodyfat% ÷ 100)
BMR = 370 + 21.6 × lean body mass(kg) -
Total daily energy expenditure (TDEE):
TDEE = BMR × activity factor -
Target calories:
Target calories = TDEE × goal factor
(For example, 0.8 for 20% deficit or 1.1 for 10% surplus.) -
Protein grams per day:
Protein grams = protein factor × reference mass(kg)
Reference mass is lean mass if available; otherwise, total body mass. -
Carbohydrate grams per day:
Carb grams are taken directly from your chosen net carbohydrate limit. -
Fat grams per day:
Macro calories are calculated as 4 kcal/g for carbs and protein, 9 kcal/g for fat.
Remaining calories after carbs and protein are given to fat:
Fat grams = (Target calories − carb kcal − protein kcal) ÷ 9.
How to use this keto macro calculator
- Select your preferred unit system and enter sex and age.
- Enter current weight and height, using the same unit system consistently.
- Optionally add body fat percentage for more accurate metabolic estimation.
- Choose your activity level and goal, such as deficit or surplus.
- Set your daily net carb limit and preferred protein factor.
- Use advanced options for custom calories, meals per day, and rounding style.
- Click Calculate keto macros to generate calories and macros.
- Use the CSV or PDF buttons to export your macro plan for reference.
Typical keto macro percentage patterns
These macro percentage bands show how this macro calculator keto free output often compares to common ketogenic guidelines.
| Pattern type | Carb calories | Protein calories | Fat calories |
|---|---|---|---|
| Strict keto | 5% or less | 20–25% | 70–75% |
| Standard calculator result band | 3–8% | 18–30% | 62–79% |
| Higher protein keto | 5–10% | 25–35% | 55–70% |
| Therapeutic keto style | 4% or less | 10–20% | 76–86% |
Keto macro snapshots by body weight
The following table demonstrates how the macro calculator keto free can scale macros using similar percentages across different body sizes and activity assumptions.
| Profile | Weight | Estimated calories | Carbs (g) | Protein (g) | Fat (g) |
|---|---|---|---|---|---|
| Smaller, sedentary | 60 kg | 1,550 kcal | 20 g | 85 g | 116 g |
| Average, moderate activity | 75 kg | 2,000 kcal | 25 g | 110 g | 151 g |
| Larger, moderate activity | 95 kg | 2,450 kcal | 30 g | 135 g | 179 g |
| Very active athlete | 85 kg | 2,800 kcal | 35 g | 150 g | 207 g |
Carb limit tiers for keto macro planning
You can quickly switch carb values in the macro calculator keto free following these common low carbohydrate tiers and then review how that change shifts daily macro percentages.
| Carb tier | Net carbs (g/day) | Typical usage | Effect on fat grams |
|---|---|---|---|
| Very strict | 10–15 g | Therapeutic or medical protocols | Highest fat requirement to meet calories |
| Standard strict | 20–30 g | Common weight loss keto | High fat range, strong ketosis support |
| Moderate low carb | 30–50 g | Active users, performance focus | Slightly less fat, similar protein emphasis |
| Lifestyle low carb | 50–75 g | Flexible long term dieting | Fat grams drop further, protein stays stable |
Sample daily meal macro layout
This table shows how a three meal template might look once you have generated daily targets using the macro calculator keto free with a strict carb limit.
| Meal | Example foods | Carbs (g) | Protein (g) | Fat (g) |
|---|---|---|---|---|
| Breakfast | Eggs, avocado, olive oil | 5 g | 30 g | 40 g |
| Lunch | Chicken salad, feta, dressing | 8 g | 40 g | 55 g |
| Dinner | Salmon, non starchy vegetables, butter | 7 g | 45 g | 60 g |
| Total | Approximate daily macro coverage | 20 g | 115 g | 155 g |
Frequently asked questions – macro calculator keto free
How do I use this macro calculator keto free?
Use it by entering sex, age, body measures, activity, goal, carb limit, and protein factor. Press calculate to view calories, macros, and per meal breakdown.
What are keto macros and why do they matter?
Keto macros express how your daily calories split between carbohydrate, protein, and fat. On ketogenic plans, carbs stay very low while protein stays moderate and fat provides most remaining energy.
Do I need to know my body fat percentage?
Body fat allows the calculator to estimate lean body mass, which improves metabolic rate and protein targeting. Without body fat, calculations use total weight, which is less personalized but still reasonable.
How does this calculator choose carb, protein, and fat grams?
Carb grams are taken directly from your chosen limit, then protein is calculated from lean or total mass. Remaining calories after carbs and protein are automatically assigned to dietary fat.
Can this macro calculator help me lose fat faster?
Use a lower goal factor, aggressive carb limits, and a modest calorie override if appropriate. However, avoid extreme deficits, since they may reduce adherence, muscle retention, and overall wellbeing over longer periods.
Can I use both kilograms and pounds with this tool?
Yes. Choose your unit system, then enter height and weight using matching units. The calculator converts imperial entries internally, so results remain comparable with metric reference values and formulas.
What changes when I adjust meals per day?
Meals per day only redistributes total grams into equal meal portions. Total calories and macro grams for the full day remain unchanged, regardless of how many meals you schedule.