Macros for 180 lb Men (Cutting, Lightly Active)
Reviewed by Andrew Menechian, Head of Fitness at FitCommit
Exact macros for a 180 lb man on a cutting diet. Calculated from estimated lean mass, Katch-McArdle BMR, and a lightly active TDEE (light exercise 1-3 days per week).
1,998
Calories
~20% calorie deficit
174g
Protein
696 cal (35%)
150g
Carbs
600 cal (30%)
78g
Fat
702 cal (35%)
Running a 498 cal/day deficit (20% below TDEE). Expect ~1 lbs of fat loss per week while protecting 148 lbs of lean mass.
4 weeks
176 lbs
8 weeks
172 lbs
12 weeks
168 lbs
How These Macros Were Calculated
| Body Weight | 180 lbs |
|---|---|
| Estimated Lean Mass | 148 lbs (82% of body weight) |
| Lean Mass (kg) | 66.9 kg |
| BMR (Katch-McArdle) | 1,815 cal/day |
| TDEE (BMR x 1.375) | 2,496 cal/day |
| Target Calories | 1,998 cal/day |
| Daily Deficit | 498 cal/day (20% deficit) |
| Expected Weekly Change | 1 lbs loss per week |
BMR uses the Katch-McArdle formula (370 + 21.6 x lean mass kg), which accounts for lean mass and outperforms Harris-Benedict for accuracy across different body compositions. Lean mass estimated at 18% average body fat for men. Activity multiplier 1.375 = light exercise 1-3 days per week.
Macro Breakdown
| Macro | Grams | Calories | % of Total |
|---|---|---|---|
| Protein | 174g | 696 | 35% |
| Carbohydrates | 150g | 600 | 30% |
| Fat | 78g | 702 | 35% |
| Total | - | 1,998 | 100% |
Protein is set at 2.6g per kg of lean body mass (148 lbs lean mass for this man). Fat targets 35% of target calories with a minimum safety floor applied if needed; carbs fill remaining calories, with a 50g minimum for brain function.
Meal Split Examples
3 Meals Per Day
- Per-meal calories666 cal
- Per-meal protein58g
- Per-meal carbs50g
- Per-meal fat26g
4 Meals Per Day
- Per-meal calories500 cal
- Per-meal protein44g
- Per-meal carbs38g
- Per-meal fat20g
5 Meals Per Day
- Per-meal calories400 cal
- Per-meal protein35g
- Per-meal carbs30g
- Per-meal fat16g
Research shows muscle protein synthesis is maximized with 30-40g protein per meal. 58g per meal in 3 meals is within the optimal range.
What These Macros Look Like in Food
Protein: 174g
- 6 x 100g chicken breast (31g each)
- 29 large eggs (6g each)
- 10 cups whole-milk Greek yogurt (17g each)
- 8 scoops protein powder (22-25g each)
Carbs: 150g
- 3 cups cooked rice (45g each)
- 3 cups dry oats (54g each)
- 6 medium sweet potatoes (26g each)
- 6 medium bananas (27g each)
Fat: 78g
- 6 tbsp olive oil (14g each)
- 5 half avocados (15g each)
- 10 tbsp peanut butter (8g fat each)
- 6 oz almonds (14g each)
These are rough equivalents. Most meals contain a mix of all three macros. Use a food tracking app for precise logging.
These numbers use an estimated 18% body fat.
FitCommit measures your actual lean mass with an AI body scan from your phone camera, so your macros reflect your real body composition.
Frequently Asked Questions
What are 150g of carbs used for in a cutting diet?
The 150g of carbs provides 600 calories for workouts and brain function. Carbohydrates replenish muscle glycogen after training, supporting performance and recovery. On a cut, carbs fill the remaining calories after protein and fat. At 150g, this is a moderate-carb cut, not a low-carb diet.
Should I recalculate my macros as I lose weight?
Yes. Recalculate every 10-15 lbs of weight loss. As your weight changes, lean mass, BMR, and TDEE all shift. For a 180 lb man cutting to 165 lbs, the TDEE shifts by roughly 164 calories and macros should be recalculated.
What foods hit 174g protein, 78g fat, and 150g carbs?
Protein sources for 174g: roughly 6 x 100g portions of chicken breast (31g protein each), or 29 eggs (6g each), combined with Greek yogurt or protein powder. Fat sources for 78g: about 6 tablespoons of olive oil or peanut butter. Carb sources for 150g: roughly 3 cups of cooked rice (45g each) or 6 cups of oats (27g each). A food tracking app is the most accurate way to hit these targets.
How does my activity level affect my 1998 calorie target?
Your Lightly Active activity level uses a multiplier of 1.375, giving a TDEE of 2496 calories. If you were sedentary (1.2x), your TDEE would be approximately 2178 calories. If you were very active (1.725x), it would be approximately 3131 calories. The activity multiplier is the single biggest variable in your calorie target. Getting it right matters more than small differences in the macro split.
When to Recalculate These Macros
Not losing weight after 2 consistent weeks
Reduce by 100-150 cal/day, pulling from carbs first. Your actual TDEE may be slightly below the 1.375x estimate. Confirm tracking accuracy before cutting further.
Losing more than 1.5 lbs per week
Add 100-200 cal/day from carbs. At 180 lbs, faster loss increases muscle loss risk and energy crashes. The target rate is 0.5-1 lb per week on a cut.
Lost 10 or more lbs from this starting weight
Recalculate at your new weight. BMR and TDEE drop as you lose mass. Eating the macros for 180 lbs when you weigh less will slow progress.
Other Weights and Goals
Same Weight and Goal, Different Activity Levels
Sedentary
180 lbs, male, cutting
Lightly Active
180 lbs, male, cutting
Moderately Active
180 lbs, male, cutting
Very Active
180 lbs, male, cutting
Extra Active
180 lbs, male, cutting
Related Resources
Get Your Exact Macros with FitCommit
These numbers use average body fat estimates. FitCommit's AI body scan measures your actual lean mass from your phone camera.
Precise lean mass = precise TDEE = macros that actually match your body, not an average.
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