Macros for 180 lb Women (Cutting, Lightly Active)
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 lightly active TDEE (light exercise 1-3 days per week).
1,862
Calories
~20% calorie deficit
159g
Protein
636 cal (34%)
104g
Carbs
416 cal (22%)
90g
Fat
810 cal (44%)
Running a 464 cal/day deficit (20% below TDEE). Expect ~0.93 lbs of fat loss per week while protecting 135 lbs of lean mass.
4 weeks
176.3 lbs
8 weeks
172.6 lbs
12 weeks
168.8 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 1.375) | 2,326 cal/day |
| Target Calories | 1,862 cal/day |
| Daily Deficit | 464 cal/day (20% deficit) |
| Expected Weekly Change | 0.93 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 1.375 = light exercise 1-3 days per week.
Macro Breakdown
| Macro | Grams | Calories | % of Total |
|---|---|---|---|
| Protein | 159g | 636 | 34% |
| Carbohydrates | 104g | 416 | 22% |
| Fat | 90g | 810 | 44% |
| Total | - | 1,862 | 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 calories621 cal
- Per-meal protein53g
- Per-meal carbs35g
- Per-meal fat30g
4 Meals Per Day
- Per-meal calories466 cal
- Per-meal protein40g
- Per-meal carbs26g
- Per-meal fat23g
5 Meals Per Day
- Per-meal calories372 cal
- Per-meal protein32g
- Per-meal carbs21g
- 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)
- 7 scoops protein powder (22-25g each)
Carbs: 104g
- 2 cups cooked rice (45g each)
- 2 cups dry oats (54g each)
- 4 medium sweet potatoes (26g each)
- 4 medium bananas (27g each)
Fat: 90g
- 6 tbsp olive oil (14g each)
- 6 half avocados (15g each)
- 11 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 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
How were the macros calculated for a 180 lb female?
The calculation uses the Katch-McArdle BMR formula. A 180 lb woman with an estimated 75% lean mass (135 lbs lean) has a BMR of 1692 calories. Multiplied by 1.375 for lightly active activity (Light exercise 1-3 days per week), the TDEE is 2326 calories per day. For cutting, a 20% deficit brings the target to 1862 calories.
Why is protein 159g for cutting at 180 lbs?
Protein for cutting is set at 2.6g per kg of lean body mass. A 180 lb woman with 135 lbs of lean mass needs 159g of protein per day. Higher protein during a cut preserves muscle tissue while in a calorie deficit.
How much weight will I lose at 1862 calories?
At 1862 calories per day, a 180 lb woman should lose approximately 0.93 lbs per week. This assumes a TDEE of 2326 at lightly active activity and a deficit of 464 calories per day. Results vary based on actual metabolic rate, training load, and adherence.
Why is fat set at 90g for a cutting diet?
Fat is set at 44% of total calories, which is 810 calories or 90g per day. Fat is essential for hormone production, fat-soluble vitamin absorption, and satiety. During a deficit, fat is set at or above 35% of target calories to protect hormonal function and satiety while losing weight. Dropping fat below 20% of total calories can impair testosterone, estrogen, and recovery.
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
Previous Weight
170 lbs female cutting lightly active
Next Weight
190 lbs female cutting lightly active
Same Weight and Goal, Different Activity Levels
Sedentary
180 lbs, female, cutting
Lightly Active
180 lbs, female, cutting
Moderately Active
180 lbs, female, cutting
Very Active
180 lbs, female, cutting
Extra Active
180 lbs, female, 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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