Macros for 180 lb Women (Cutting, Sedentary)
Reviewed by Andrew Menechian, Head of Fitness at FitCommit
Exact macros for a 180 lb woman on a cutting diet. Calculated from estimated lean mass, Katch-McArdle BMR, and a sedentary TDEE (desk job, little or no exercise).
1,646
Calories
~20% calorie deficit
159g
Protein
636 cal (39%)
50g
Carbs
200 cal (12%)
90g
Fat
810 cal (49%)
Running a 384 cal/day deficit (20% below TDEE). Expect ~0.77 lbs of fat loss per week while protecting 135 lbs of lean mass.
4 weeks
176.9 lbs
8 weeks
173.8 lbs
12 weeks
170.8 lbs
How These Macros Were Calculated
| Body Weight | 180 lbs |
|---|---|
| Estimated Lean Mass | 135 lbs (75% of body weight) |
| Lean Mass (kg) | 61.2 kg |
| BMR (Katch-McArdle) | 1,692 cal/day |
| TDEE (BMR x 1.2) | 2,030 cal/day |
| Target Calories | 1,646 cal/day |
| Daily Deficit | 384 cal/day (20% deficit) |
| Expected Weekly Change | 0.77 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 25% average body fat for women. Activity multiplier 1.2 = desk job, little or no exercise.
Macro Breakdown
| Macro | Grams | Calories | % of Total |
|---|---|---|---|
| Protein | 159g | 636 | 39% |
| Carbohydrates | 50g | 200 | 12% |
| Fat | 90g | 810 | 49% |
| Total | - | 1,646 | 100% |
Protein is set at 2.6g per kg of lean body mass (135 lbs lean mass for this woman). 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 calories549 cal
- Per-meal protein53g
- Per-meal carbs17g
- Per-meal fat30g
4 Meals Per Day
- Per-meal calories412 cal
- Per-meal protein40g
- Per-meal carbs13g
- Per-meal fat23g
5 Meals Per Day
- Per-meal calories329 cal
- Per-meal protein32g
- Per-meal carbs10g
- Per-meal fat18g
Research shows muscle protein synthesis is maximized with 30-40g protein per meal. 53g per meal in 3 meals is within the optimal range.
What These Macros Look Like in Food
Protein: 159g
- 5 x 100g chicken breast (31g each)
- 27 large eggs (6g each)
- 9 cups whole-milk Greek yogurt (17g each)
- 6 cups cottage cheese (25g each)
Carbs: 50g
- 2 medium sweet potatoes (26g each)
- 1 cups dry oats (54g each)
- 1 cups cooked lentils (40g each)
- 1 cups cooked brown rice (45g each)
Fat: 90g
- 6 tbsp olive oil (14g each)
- 6 half avocados (15g each)
- 6 oz mixed nuts (14g each)
- 7 x 100g salmon fillet (13g 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 25% 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 foods hit 159g protein, 90g fat, and 50g carbs?
Protein sources for 159g: roughly 5 x 100g portions of chicken breast (31g protein each), or 27 eggs (6g each), combined with Greek yogurt or protein powder. Fat sources for 90g: about 6 tablespoons of olive oil or peanut butter. Carb sources for 50g: roughly 1 cups of cooked rice (45g each) or 2 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 1646 calorie target?
Your Sedentary activity level uses a multiplier of 1.2, giving a TDEE of 2030 calories. If you were sedentary (1.2x), your TDEE would be approximately 2030 calories. If you were very active (1.725x), it would be approximately 2919 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.
What should I do if I'm not losing weight at 1646 calories?
After 2 weeks with no movement, your actual TDEE likely differs from the estimate. Try reducing by 100-150 calories first. If energy drops significantly, check your protein intake before cutting calories further. Common issue: overestimating activity level.
How long should I stay in a cutting phase at 1646 calories?
Most people cut effectively for 8-16 weeks before needing a break. At 1646 calories, a 180 lb woman should lose approximately 0.77 lbs per week. After 10-12 weeks, take a 4-8 week maintenance break to reset ghrelin and cortisol before cutting again.
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 1.2x 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
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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