Ideal Weight Calculator

Free ideal weight calculator using four established medical formulas: Devine (1974), Robinson (1983), Miller (1983), and Hamwi (1964). Also shows healthy BMI weight range. Enter your height, gender, and frame size for personalized ideal weight recommendations.

Biological Sex

Height (ft & in)

Frame Size

Enter your height above to calculate your ideal weight using multiple formulas.

How to Determine Your Frame Size

Wrist Measurement Method

Wrap your thumb and middle finger around your wrist just above the wrist bone (the bump on the outside).

Small Frame

Fingers overlap each other

Wrist < 6.5"

Medium Frame

Fingers just touch

Wrist 6.5" - 7.5"

Large Frame

Fingers do not touch

Wrist > 7.5"

How frame size affects ideal weight: Small frames support less weight, while larger frames support more. The calculator adjusts ideal weight by -10% for small frames and +10% for large frames, matching clinical guidelines.

Height-Weight Reference Table (Medium Frame)

Height	Male (avg)	Female (avg)
5'0"(152 cm)	126 lbs	110 lbs
5'1"(155 cm)	128 lbs	112 lbs
5'2"(157 cm)	132 lbs	117 lbs
5'3"(160 cm)	137 lbs	119 lbs
5'4"(163 cm)	141 lbs	123 lbs
5'5"(165 cm)	143 lbs	126 lbs
5'6"(168 cm)	148 lbs	130 lbs
5'7"(170 cm)	152 lbs	134 lbs
5'8"(173 cm)	157 lbs	137 lbs
5'9"(175 cm)	161 lbs	141 lbs
5'10"(178 cm)	165 lbs	143 lbs
5'11"(180 cm)	170 lbs	148 lbs
6'0"(183 cm)	174 lbs	152 lbs
6'1"(185 cm)	179 lbs	154 lbs
6'2"(188 cm)	183 lbs	159 lbs
6'3"(191 cm)	187 lbs	163 lbs
6'4"(193 cm)	194 lbs	168 lbs

Average ideal weight across all four formulas for medium-frame individuals.

About the Formulas

Devine Formula (1974)

Male: 50 + 2.3 kg per inch over 5 ft

Originally developed for medicinal dosage calculations. The most widely referenced formula in clinical settings.

Robinson Formula (1983)

Male: 52 + 1.9 kg per inch over 5 ft

A modification of the Devine formula, considered to provide more realistic estimates for most people.

Miller Formula (1983)

Male: 56.2 + 1.41 kg per inch over 5 ft

Tends to produce higher ideal weights for shorter individuals and lower for taller, reflecting a more gradual height-weight relationship.

Hamwi Formula (1964)

Male: 48 + 2.7 kg per inch over 5 ft

One of the earliest ideal weight formulas, commonly used in clinical nutrition for quick estimates.

Disclaimer

Ideal body weight formulas provide rough estimates based on height and gender. They do not account for muscle mass, body composition, age, ethnicity, or individual health conditions.

This is not medical advice. A healthy weight varies significantly between individuals. Athletes and muscular individuals may weigh more than these estimates suggest while being perfectly healthy. The BMI-based healthy weight range (18.5–24.9) is provided as an additional reference.

Always consult a healthcare professional for personalized weight and health guidance.

How to Use Ideal Weight Calculator

1Select your gender and enter your height.
2Optionally determine your frame size using wrist measurement.
3View ideal weight from all four formulas and BMI range.
4Use the average as your target healthy weight.

Frequently Asked Questions

How much should I weigh for my height?▾

Ideal weight depends on height, gender, frame size, and muscle mass. As a rough guide, a medium-frame 5'10" man's ideal weight is approximately 155-170 lbs. A medium-frame 5'5" woman's ideal weight is approximately 125-140 lbs.

Which ideal weight formula is most accurate?▾

No single formula is perfect. The Devine formula is most widely used in clinical settings for drug dosing. The BMI-based range (18.5-24.9) gives the broadest healthy range. Use the average of all formulas for a reasonable target.

How does frame size affect ideal weight?▾

Large-framed individuals naturally weigh more due to bigger bones and larger body structure. Frame size adjustments add 10% for large frames and subtract 10% for small frames. Measure your wrist circumference to determine frame size.

About Ideal Weight Calculator

NexTool's Ideal Weight Calculator is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.