Macros for 170 lb Men (Maintenance, Extra Active)
Reviewed by Andrew Menechian, Head of Fitness at FitCommit
Exact macros for a 170 lb man on a maintenance diet. Calculated from estimated lean mass, Katch-McArdle BMR, and a extra active TDEE (very hard exercise and physical job).
3,298
Calories
Maintenance calories
145g
Protein
580 cal (18%)
432g
Carbs
1728 cal (52%)
110g
Fat
990 cal (30%)
Eating at TDEE with zero deficit or surplus. These macros maintain your 170 lb body weight while optimizing protein for muscle retention.
How These Macros Were Calculated
| Body Weight | 170 lbs |
|---|---|
| Estimated Lean Mass | 139 lbs (82% of body weight) |
| Lean Mass (kg) | 63.2 kg |
| BMR (Katch-McArdle) | 1,735 cal/day |
| TDEE (BMR x 1.9) | 3,297 cal/day |
| Target Calories | 3,298 cal/day |
| Calorie Change | None (maintenance) |
| Expected Weekly Change | Stable weight |
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 1.9 = very hard exercise and physical job.
Macro Breakdown
| Macro | Grams | Calories | % of Total |
|---|---|---|---|
| Protein | 145g | 580 | 18% |
| Carbohydrates | 432g | 1728 | 52% |
| Fat | 110g | 990 | 30% |
| Total | - | 3,298 | 100% |
Protein is set at 2.3g per kg of lean body mass (139 lbs lean mass for this man). Fat targets 30% 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 calories1,099 cal
- Per-meal protein48g
- Per-meal carbs144g
- Per-meal fat37g
4 Meals Per Day
- Per-meal calories825 cal
- Per-meal protein36g
- Per-meal carbs108g
- Per-meal fat28g
5 Meals Per Day
- Per-meal calories660 cal
- Per-meal protein29g
- Per-meal carbs86g
- Per-meal fat22g
Research shows muscle protein synthesis is maximized with 30-40g protein per meal. 48g per meal in 3 meals is within the optimal range.
What These Macros Look Like in Food
Protein: 145g
- 6 scoops protein powder (22-25g each)
- 6 x 100g cooked salmon fillet (25g each)
- 5 x 100g chicken breast (31g each)
- 6 x 100g lean ground beef (26g each)
Carbs: 432g
- 10 cups cooked white rice (45g each)
- 62 rice cakes (7g each)
- 16 medium bananas (27g each)
- 24 Medjool dates (18g each)
Fat: 110g
- 8 tbsp olive oil (14g each)
- 12 tbsp almond butter (9g fat each)
- 5 oz macadamia nuts (21g each)
- 8 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 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
How do I split 145g of protein across meals?
Across 3 meals, each meal needs about 48g of protein. Across 5 meals or snacks, each needs about 29g. Research shows protein synthesis is maximized with 30-40g per meal for most people. 48g per meal in 3 meals is within the optimal 30-40g range.
What are 432g of carbs used for in a maintenance diet?
The 432g of carbs provides 1728 calories for workouts and brain function. Carbohydrates replenish muscle glycogen after training, supporting performance and recovery. At maintenance, 432g of carbs fuels daily activity at a sustainable level without gain or loss.
Should I recalculate my macros as I track weight?
At maintenance, recalculate your TDEE every 4-8 weeks if your weight shifts more than 5 lbs consistently. Lean mass changes affect calorie needs.
What foods hit 145g protein, 110g fat, and 432g carbs?
Protein sources for 145g: roughly 5 x 100g portions of chicken breast (31g protein each), or 24 eggs (6g each), combined with Greek yogurt or protein powder. Fat sources for 110g: about 8 tablespoons of olive oil or peanut butter. Carb sources for 432g: roughly 10 cups of cooked rice (45g each) or 16 cups of oats (27g each). A food tracking app is the most accurate way to hit these targets.
When to Recalculate These Macros
Weight trending upward over 2 weeks
Reduce by 100-150 cal/day from carbs. Your actual TDEE is slightly below the 1.9x estimate for extra active activity.
Weight trending downward over 2 weeks
Add 100-150 cal/day from carbs or fat. You may be more active than the multiplier accounts for, or your metabolism has adapted upward.
Activity level has changed significantly
Switch to the matching activity level using the selector above. The difference between sedentary and moderately active can be 300-500 cal/day at 170 lbs.
Other Weights and Goals
Previous Weight
160 lbs male maintenance extra active
Next Weight
180 lbs male maintenance extra active
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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