Ideal Weight Calculator — Devine, Hamwi, Robinson, Miller & BMI Range
Calculate ideal body weight using Devine, Hamwi, Robinson, Miller, and BMI midpoint formulas. Get WHO/CDC healthy weight range and adjusted body weight (ABW). Accessible, mobile-first, and medically referenced.
Full original guide (expanded)
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted text)
Devine (kg): for men \( IBW = 50 + 2.3 \times (inches - 60) \);\n for women \( IBW = 45.5 + 2.3 \times (inches - 60) \). Hamwi (lb): men \( 106 + 6 \times (inches - 60) \), women \( 100 + 5 \times (inches - 60) \); convert to kg by dividing by \(2.20462\). Robinson (kg): men \( 52 + 1.9 \times (inches - 60) \), women \( 49 + 1.7 \times (inches - 60) \). Miller (kg): men \( 56.2 + 1.41 \times (inches - 60) \), women \( 53.1 + 1.36 \times (inches - 60) \). BMI midpoint: \( IBW = 22 \times H^2 \) where \( H \) is height in meters. Healthy BMI range: \( [18.5 \times H^2,\; 24.9 \times H^2] \). Adjusted Body Weight (ABW) (when actual ≥120% of IBW): \( ABW = IBW + 0.4\,(W_{actual} - IBW) \).
Variables and units
- No variables provided in audit spec.
Sources (authoritative):
- CDC — cdc.gov · Accessed 2026-01-19
https://www.cdc.gov/bmi/adult-calculator/bmi-categories.html - WHO — apps.who.int · Accessed 2026-01-19
https://apps.who.int/nutrition/landscape/help.aspx?helpid=420 - Home — calcdomain.com · Accessed 2026-01-19
https://calcdomain.com/ - Health & Fitness — calcdomain.com · Accessed 2026-01-19
https://calcdomain.com/health-fitness - Health metrics — calcdomain.com · Accessed 2026-01-19
https://calcdomain.com/subcategories/health-metrics - Reference — ebmcalc.com · Accessed 2026-01-19
https://ebmcalc.com/IBW_Devine.htm - PEN Group briefing — peng.org.uk · Accessed 2026-01-19
https://www.peng.org.uk/pdfs/pocket-guide/statement-on-ideal-body-weight.pdf - Robinson — evidencio.com · Accessed 2026-01-19
https://www.evidencio.com/models/show/432
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
- Initial audit spec draft generated from HTML extraction (review required).
- Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
- Confirm sources are authoritative and relevant to the calculator methodology.
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted text)
Devine (kg): for men \( IBW = 50 + 2.3 \times (inches - 60) \);\n for women \( IBW = 45.5 + 2.3 \times (inches - 60) \). Hamwi (lb): men \( 106 + 6 \times (inches - 60) \), women \( 100 + 5 \times (inches - 60) \); convert to kg by dividing by \(2.20462\). Robinson (kg): men \( 52 + 1.9 \times (inches - 60) \), women \( 49 + 1.7 \times (inches - 60) \). Miller (kg): men \( 56.2 + 1.41 \times (inches - 60) \), women \( 53.1 + 1.36 \times (inches - 60) \). BMI midpoint: \( IBW = 22 \times H^2 \) where \( H \) is height in meters. Healthy BMI range: \( [18.5 \times H^2,\; 24.9 \times H^2] \). Adjusted Body Weight (ABW) (when actual ≥120% of IBW): \( ABW = IBW + 0.4\,(W_{actual} - IBW) \).
Variables and units
- No variables provided in audit spec.
Sources (authoritative):
- CDC — cdc.gov · Accessed 2026-01-19
https://www.cdc.gov/bmi/adult-calculator/bmi-categories.html - WHO — apps.who.int · Accessed 2026-01-19
https://apps.who.int/nutrition/landscape/help.aspx?helpid=420 - Home — calcdomain.com · Accessed 2026-01-19
https://calcdomain.com/ - Health & Fitness — calcdomain.com · Accessed 2026-01-19
https://calcdomain.com/health-fitness - Health metrics — calcdomain.com · Accessed 2026-01-19
https://calcdomain.com/subcategories/health-metrics - Reference — ebmcalc.com · Accessed 2026-01-19
https://ebmcalc.com/IBW_Devine.htm - PEN Group briefing — peng.org.uk · Accessed 2026-01-19
https://www.peng.org.uk/pdfs/pocket-guide/statement-on-ideal-body-weight.pdf - Robinson — evidencio.com · Accessed 2026-01-19
https://www.evidencio.com/models/show/432
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
- Initial audit spec draft generated from HTML extraction (review required).
- Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
- Confirm sources are authoritative and relevant to the calculator methodology.
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted text)
Devine (kg): for men \( IBW = 50 + 2.3 \times (inches - 60) \);\n for women \( IBW = 45.5 + 2.3 \times (inches - 60) \). Hamwi (lb): men \( 106 + 6 \times (inches - 60) \), women \( 100 + 5 \times (inches - 60) \); convert to kg by dividing by \(2.20462\). Robinson (kg): men \( 52 + 1.9 \times (inches - 60) \), women \( 49 + 1.7 \times (inches - 60) \). Miller (kg): men \( 56.2 + 1.41 \times (inches - 60) \), women \( 53.1 + 1.36 \times (inches - 60) \). BMI midpoint: \( IBW = 22 \times H^2 \) where \( H \) is height in meters. Healthy BMI range: \( [18.5 \times H^2,\; 24.9 \times H^2] \). Adjusted Body Weight (ABW) (when actual ≥120% of IBW): \( ABW = IBW + 0.4\,(W_{actual} - IBW) \).
Variables and units
- No variables provided in audit spec.
Sources (authoritative):
- CDC — cdc.gov · Accessed 2026-01-19
https://www.cdc.gov/bmi/adult-calculator/bmi-categories.html - WHO — apps.who.int · Accessed 2026-01-19
https://apps.who.int/nutrition/landscape/help.aspx?helpid=420 - Home — calcdomain.com · Accessed 2026-01-19
https://calcdomain.com/ - Health & Fitness — calcdomain.com · Accessed 2026-01-19
https://calcdomain.com/health-fitness - Health metrics — calcdomain.com · Accessed 2026-01-19
https://calcdomain.com/subcategories/health-metrics - Reference — ebmcalc.com · Accessed 2026-01-19
https://ebmcalc.com/IBW_Devine.htm - PEN Group briefing — peng.org.uk · Accessed 2026-01-19
https://www.peng.org.uk/pdfs/pocket-guide/statement-on-ideal-body-weight.pdf - Robinson — evidencio.com · Accessed 2026-01-19
https://www.evidencio.com/models/show/432
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
- Initial audit spec draft generated from HTML extraction (review required).
- Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
- Confirm sources are authoritative and relevant to the calculator methodology.