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166
avg ideal (lbs)
136-184
healthy range
22.5
BMI at midpoint
ยฑ24
formula variance
US Average Man
200
lbs at 5'9"
-34 lbs
Your Ideal Weight
166
lbs at 6'0"
Your ideal weight of 166 lbs is 34 lbs below the average American man (200 lbs at 5'9"). The average is above healthy BMI range, so being below it is a positive sign. Source: CDC NHANES 2023-2024.
A healthy weight for a 6'0" man is approximately 136-184 lbs based on BMI guidelines. Multiple formulas suggest a midpoint around 166 lbs (BMI 22.5). Your ideal weight depends on muscle mass, bone structure, and body fat percentage. That number on the scale is just the starting point. What matters is the body fat percentage behind it.

Reference only. Actual appearance varies by muscle mass and genetics. See all body fat percentages โ
Weight alone doesn't tell the story
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| Method | Weight (lbs) | Notes |
|---|---|---|
| BMI Range | 136-184 | Healthy BMI 18.5-24.9 |
| Robinson (1983) | 165 | Updated clinical formula |
| Miller (1983) | 161 | Population-based estimate |
| Devine (1974) | 171 | Original clinical formula |
| Formula Average | 166 | Average of Robinson, Miller, Devine |
BMI Range
Healthy BMI 18.5-24.9
136-184
Robinson (1983)
Updated clinical formula
165
Miller (1983)
Population-based estimate
161
Devine (1974)
Original clinical formula
171
Formula Average
Average of Robinson, Miller, Devine
166
At 166 lbs with 15% body fat (ACE Fitness category):
141 lbs
Lean Mass (85%)
25 lbs
Fat Mass (15%)
Lean mass includes muscle, bone, organs, and water. Building muscle while maintaining body fat increases lean mass and improves your physique at the same weight.
Estimated daily calories to maintain 166 lbs using the Mifflin-St Jeor equation (age 30 estimate):
2,101
Sedentary
desk job, little exercise
2,714
Moderate
exercise 3-5x/week
3,020
Active
exercise 6-7x/week
These are maintenance calories. Subtract 500 cal/day to lose ~1 lb/week. Add 300 cal/day to gain muscle. Get your exact TDEE โ
116g
Minimum
0.7g/lb
133g
Recommended
0.8g/lb
166g
Athletic
1.0g/lb
At 166 lbs, aim for 133-166g protein daily. This supports muscle maintenance, recovery, and satiety. Spread across 3-4 meals for optimal absorption.
Measure your wrist circumference at the narrowest point (just below the wrist bone) to determine your frame size:
Small
Wrist < 6.5"
159 lbs
-7 lbs
Medium
Wrist 6.5" - 7.5"
166 lbs
baseline
Large
Wrist > 7.5"
173 lbs
+7 lbs
Frame size affects how much bone and muscle you naturally carry. Larger-framed people are healthy at higher weights. These adjustments are based on the Hamwi method (1964).
166 lbs at 6'0" gives a BMI of 22.5, which falls in the healthy range. This is near the midpoint of the healthy weight range for this height. Whether this is ideal for you depends on your body composition, muscle mass, and fitness goals.
Each formula was developed from different population samples and uses different methodologies. The Devine formula (1974) was originally for drug dosing, not fitness. Robinson (1983) and Miller (1983) updated these estimates. BMI-based ranges are the most widely used. No single formula is perfect because ideal weight depends on individual factors like muscle mass and frame size.
Body fat percentage is more useful than BMI for fitness goals. BMI only uses height and weight, so it misclassifies muscular people as overweight. Body fat percentage directly measures how much of your weight is fat tissue. Use BMI as a rough screening tool and body fat percentage for detailed body composition assessment.
Healthy body fat ranges are the same regardless of height: 14-24% for men and 21-31% for women (ACE guidelines). Athletes are typically 6-13% (men) and 14-20% (women). At 6'0" and 166 lbs, maintaining a body fat in the fitness range would mean carrying approximately 136 lbs of lean mass.

Weight alone doesn't tell the story. Two men at 6'0" and 166 lbs can look completely different. FitCommit's AI body scan shows your actual body fat percentage in 60 seconds.
Find Out Your Body Fat %BMI for every height and weight combination with health context
Check if your weight is in a healthy range for your height
Visual reference for every body fat percentage for men and women
How many calories you need per day by age, gender, and activity
Deficit levels with timelines and calorie targets for fat loss
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