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Ideal Weight Calculator

Calculate your ideal body weight using multiple formulas including Robinson, Miller, Devine, and Hamwi. Get a healthy weight range based on your height, gender, and frame size.

Ideal Weight Range

Ideal Weight

159 lbs

Average of all formulas

Healthy Range

129-174

lbs

Robinson Formula157 lbs
Miller Formula155 lbs
Devine Formula161 lbs
Hamwi Formula165 lbs

Your Information

5'10"

Measure wrist: Small (<6"), Medium (6-7"), Large (>7")

Formula Comparison

Detailed Results

Robinson Formula (1983)

157 lbs

Updated Devine formula, widely used

Miller Formula (1983)

155 lbs

Based on metropolitan life tables

Devine Formula (1974)

161 lbs

Original IBW formula, used in medicine

Hamwi Formula (1964)

165 lbs

One of the earliest IBW formulas

Healthy BMI Range

Based on BMI 18.5 - 24.9129 lbs - 174 lbs
Min: 129 lbsMax: 174 lbs

Height-Weight Reference (Men)

HeightSmall FrameMedium FrameLarge Frame
5'4"119 lbs132 lbs145 lbs
5'6"127 lbs141 lbs155 lbs
5'8"135 lbs150 lbs165 lbs
5'10"144 lbs159 lbs175 lbs
6'0"152 lbs169 lbs185 lbs
6'2"160 lbs178 lbs196 lbs

Explore Weight Scenarios

Explore how changes affect your results

Your Ideal Weight vs Population

Compared to the general population

Your Ideal Weight

159.4 lbs

Percentile

32th

Below average - looking good!

Distribution

You

10th

135.0

25th

155.0

Median

170.0

75th

185.0

90th

200.0

Your Ranking

Top 32%

68% are higher

Achieving Your Ideal Weight

Based on your results

0/5 completed
⚕️ MedicalImportant

Understanding Your Goal

Your ideal weight range is 129 lbs to 174 lbs. This is a target range, not a single number. Focus on how you feel, not just the scale.

⚕️ MedicalRecommended

Formula Variation

The 45 lbs spread between formulas is normal. Use the average (159 lbs) as a general target.

🏃 ExerciseRecommended

Beyond the Scale

Ideal weight formulas don't account for muscle mass. If you strength train, focus on body composition rather than just weight.

Ideal Weight Range

Ideal Weight

159 lbs

Average of all formulas

Healthy Range

129-174

lbs

Robinson Formula157 lbs
Miller Formula155 lbs
Devine Formula161 lbs
Hamwi Formula165 lbs

Frequently Asked Questions

What is ideal body weight?

Ideal body weight (IBW) is an estimated weight that may be associated with optimal health based on your height and gender. Multiple formulas exist because "ideal" varies based on frame size, muscle mass, and individual factors.

Which ideal weight formula is best?

No single formula is "best" for everyone. The Devine formula is commonly used in medicine. Robinson and Miller formulas may be more accurate for some people. Using the average of multiple formulas often provides a better estimate.

How does frame size affect ideal weight?

Larger bone structures can healthily carry more weight. Measure your wrist circumference to estimate frame size: small (<6" men, <5.5" women), medium (6-7" men, 5.5-6.25" women), large (>7" men, >6.25" women).

Is BMI-based weight range accurate?

BMI-based ranges (18.5-24.9) provide a general guideline but don't account for muscle mass. Athletes may be above the range while healthy. Use BMI alongside other measures like body fat percentage.

Why do formulas give different results?

Each formula was developed from different population studies and uses different mathematical approaches. This variation reflects the reality that "ideal" weight varies by individual. Consider the range rather than any single number.

Formula:
By Joseph OrdunaHow this works

How this works

Shows results from the four common formulas: Robinson, Miller, Devine, and Hamwi. Healthcare contexts usually use Devine; fitness contexts sometimes prefer Miller. All are regressions from historical data, not absolute truth.

What this tool can’t do

  • "Ideal weight" is a clinical shorthand, not an aspirational number. Athletic, pregnant, and older adults have different targets.

When to consult a professional

Talk to a licensed healthcare provider before using the output of this tool to make a medical decision, especially if you have an underlying condition, are pregnant, or are on medication that affects metabolism or fluid balance.

Sources

  1. [1]
    Centers for Disease Control and Prevention (CDC)
    Official sourcecdc.govAccessed Apr 21, 2026
  2. [2]
    National Institutes of Health (NIH)
    Official sourcenih.govAccessed Apr 21, 2026
Joseph Orduna
Founder & Software Engineer

Full-stack software engineer specializing in embedded systems, web architecture, and AI/ML. Founder of Practical Web Tools. Built the gesture-controlled drone IP acquired by KD Interactive (Aura Drone, sold on Amazon).