Macros for 170 lb Women (Cutting, Very Active)
Reviewed by Andrew Menechian, Head of Fitness at FitCommit
Exact macros for a 170 lb woman on a cutting diet. Calculated from estimated lean mass, Katch-McArdle BMR, and a very active TDEE (hard exercise 6-7 days per week).
2,235
Calories
~20% calorie deficit
150g
Protein
600 cal (27%)
213g
Carbs
852 cal (38%)
87g
Fat
783 cal (35%)
Running a 557 cal/day deficit (20% below TDEE). Expect ~1.11 lbs of fat loss per week while protecting 128 lbs of lean mass.
4 weeks
165.6 lbs
8 weeks
161.1 lbs
12 weeks
156.7 lbs
How These Macros Were Calculated
| Body Weight | 170 lbs |
|---|---|
| Estimated Lean Mass | 128 lbs (75% of body weight) |
| Lean Mass (kg) | 57.8 kg |
| BMR (Katch-McArdle) | 1,618 cal/day |
| TDEE (BMR x 1.725) | 2,792 cal/day |
| Target Calories | 2,235 cal/day |
| Daily Deficit | 557 cal/day (20% deficit) |
| Expected Weekly Change | 1.11 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 1.725 = hard exercise 6-7 days per week.
Macro Breakdown
| Macro | Grams | Calories | % of Total |
|---|---|---|---|
| Protein | 150g | 600 | 27% |
| Carbohydrates | 213g | 852 | 38% |
| Fat | 87g | 783 | 35% |
| Total | - | 2,235 | 100% |
Protein is set at 2.6g per kg of lean body mass (128 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 calories745 cal
- Per-meal protein50g
- Per-meal carbs71g
- Per-meal fat29g
4 Meals Per Day
- Per-meal calories559 cal
- Per-meal protein38g
- Per-meal carbs53g
- Per-meal fat22g
5 Meals Per Day
- Per-meal calories447 cal
- Per-meal protein30g
- Per-meal carbs43g
- Per-meal fat17g
Research shows muscle protein synthesis is maximized with 30-40g protein per meal. 50g per meal in 3 meals is within the optimal range.
What These Macros Look Like in Food
Protein: 150g
- 7 scoops protein powder (22-25g each)
- 5 x 100g chicken breast (31g each)
- 6 x 100g lean ground beef (26g each)
- 25 large eggs (6g each)
Carbs: 213g
- 5 cups cooked white rice (45g each)
- 8 medium bananas (27g each)
- 4 cups dry oats (54g each)
- 30 rice cakes (7g each)
Fat: 87g
- 6 tbsp olive oil (14g each)
- 10 tbsp almond butter (9g fat each)
- 5 oz walnuts (18g each)
- 6 tbsp coconut oil (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 170 lb female?
The calculation uses the Katch-McArdle BMR formula. A 170 lb woman with an estimated 75% lean mass (128 lbs lean) has a BMR of 1618 calories. Multiplied by 1.725 for very active activity (Hard exercise 6-7 days per week), the TDEE is 2792 calories per day. For cutting, a 20% deficit brings the target to 2235 calories.
Why is protein 150g for cutting at 170 lbs?
Protein for cutting is set at 2.6g per kg of lean body mass. A 170 lb woman with 128 lbs of lean mass needs 150g of protein per day. Higher protein during a cut preserves muscle tissue while in a calorie deficit.
How much weight will I lose at 2235 calories?
At 2235 calories per day, a 170 lb woman should lose approximately 1.11 lbs per week. This assumes a TDEE of 2792 at very active activity and a deficit of 557 calories per day. Results vary based on actual metabolic rate, training load, and adherence.
Why is fat set at 87g for a cutting diet?
Fat is set at 35% of total calories, which is 783 calories or 87g 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 1.725x estimate. Confirm tracking accuracy before cutting further.
Losing more than 1.5 lbs per week
Add 100-200 cal/day from carbs. At 170 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 170 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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