women's ideal body weight calculator for accurate frame-aware targets
This women's ideal body weight calculator provides a science-backed healthy weight range for women by combining Robinson, Devine, and Miller equations with frame-size adjustments and a visual chart.
Age is used to show context; formulas are height driven.
Ideal weight: — kg
Average formula weight: — kg
Height in inches: — in
Frame adjustment applied: —
Robinson ideal weight: — kg
Devine ideal weight: — kg
Miller ideal weight: — kg
Formula note: —
Chart: Ideal weight curves from this women's ideal body weight calculator showing medium vs large frame targets across heights.
Formula
Equation (Women)
Base at 5 ft
Per Inch Over 5 ft
Robinson
49 kg + 1.7 kg × (height inches − 60)
49 kg
1.7 kg
Devine
45.5 kg + 2.3 kg × (height inches − 60)
45.5 kg
2.3 kg
Miller
53.1 kg + 1.36 kg × (height inches − 60)
53.1 kg
1.36 kg
Reference: three leading ideal body weight equations used in this women's ideal body weight calculator.
What is a women's ideal body weight calculator?
A women's ideal body weight calculator is a measurement tool that combines height-based medical equations to estimate the weight range linked to lower cardiometabolic risk for women. Women who want a data-driven target, clinicians guiding nutrition, and fitness planners often use this women's ideal body weight calculator to align goals with evidence-based ranges.
Common misconceptions include thinking the women's ideal body weight calculator replaces professional judgment, assuming muscle and fat are treated the same, or believing that age radically changes the formula. The women's ideal body weight calculator focuses on height and frame size while acknowledging lifestyle and composition need separate evaluation.
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women's ideal body weight calculator Formula and Mathematical Explanation
The women's ideal body weight calculator blends Robinson, Devine, and Miller equations to average three evidence-based estimates. Height in inches is calculated, then each formula projects a base weight plus a per-inch increment above 5 feet. Frame size modifies the blended output by ±7% to reflect skeletal build, giving a tailored women's ideal body weight calculator range.
Derivation steps in this women's ideal body weight calculator:
Convert height from centimeters to inches.
Compute each ideal weight formula using its base and incremental coefficient.
Average the three outputs for a stable center value.
Apply frame multiplier: 0.93 for small, 1.00 for medium, 1.07 for large.
Display the adjusted target and supporting metrics within the women's ideal body weight calculator.
Variable
Meaning
Unit
Typical Range
H
Height
cm
130–200
H_in
Height
inches
51–79
W_R
Robinson weight
kg
40–80
W_D
Devine weight
kg
38–85
W_M
Miller weight
kg
42–82
Adj
Frame multiplier
unitless
0.93–1.07
W_avg
Blended ideal
kg
40–85
This table sits at the core of the women's ideal body weight calculator, ensuring every variable is transparent.
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Practical Examples (Real-World Use Cases)
Example 1: A 165 cm woman with a medium frame enters her details into the women's ideal body weight calculator. Height converts to 64.96 inches. Robinson gives 57.43 kg, Devine 58.38 kg, and Miller 60.72 kg. The average is 58.84 kg. With a medium frame multiplier, the women's ideal body weight calculator shows an ideal weight of about 58.8 kg. This guides a maintenance plan with balanced strength and cardio.
Example 2: A 150 cm woman with a small frame uses the women's ideal body weight calculator. Height converts to 59.06 inches. Robinson estimates 47.41 kg, Devine 46.34 kg, and Miller 49.93 kg. The women's ideal body weight calculator averages 47.89 kg. Applying the 0.93 small-frame factor yields roughly 44.54 kg, highlighting a lighter structural target while accounting for individual fitness goals.
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How to Use This women's ideal body weight calculator
Enter your height in centimeters in the women's ideal body weight calculator.
Select your frame size based on wrist circumference or visual build cues.
Optionally note age for context; the women's ideal body weight calculator keeps formulas height-based.
Review the main highlighted result and the intermediate values.
Use the chart to see how your target compares to neighboring heights.
Copy results to discuss them with a nutritionist or trainer.
Reading results: the large highlighted number is your adjusted ideal weight. Intermediate values show how each formula contributes. In this women's ideal body weight calculator, consistency across formulas indicates stable targets.
Decision guidance: If muscle gain is a priority, aim slightly above the medium-frame target while monitoring composition, and align food intake using advice from {related_keywords} within your wellness plan.
Key Factors That Affect women's ideal body weight calculator Results
These elements shape how the women's ideal body weight calculator aligns with reality:
Frame size shifts results by about 14% span between small and large builds.
Height precision: small height input errors compound across all formulas.
Lean mass: athletic users may sit above the women's ideal body weight calculator midpoint while remaining healthy.
Age-related muscle change: maintaining strength helps stay near the calculator's target.
Hydration and glycogen: short-term weight swings should not redefine the women's ideal body weight calculator baseline.
Bone density: higher density can raise scale weight without increasing health risk.
Measurement units: consistent cm inputs keep the women's ideal body weight calculator accurate.
Posture during measurement: slouching can reduce reported height and distort the ideal range.
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Frequently Asked Questions (FAQ)
Does the women's ideal body weight calculator work for all ages? It centers on adult women; discuss teen or senior cases with a clinician.
Should athletes follow the women's ideal body weight calculator exactly? Athletes may exceed targets due to lean mass; use the calculator as a reference, not a hard limit.
How do I pick my frame size? Use wrist circumference or visual build guides; the women's ideal body weight calculator applies multipliers accordingly.
Can pregnancy change the interpretation? Yes, pregnancy weight is expected; pause the women's ideal body weight calculator for postpartum planning.
Is BMI the same as this women's ideal body weight calculator? No, BMI divides weight by height squared; this calculator uses height-plus-frame equations.
What if my height is below 150 cm or above 185 cm? The women's ideal body weight calculator still applies but discuss with a professional for edge cases.
Do these formulas consider ethnicity? The women's ideal body weight calculator formulas are generalized; regional norms may vary.
How often should I recalc? Recheck quarterly or after major training or diet changes using the women's ideal body weight calculator.
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Related Tools and Internal Resources
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{related_keywords} — Professional consultation booking linked to your calculator summary.
var heightInput=document.getElementById("heightCm");
var frameInput=document.getElementById("frameSize");
var ageInput=document.getElementById("ageYears");
var chartCanvas=document.getElementById("weightChart");
var ctx=chartCanvas.getContext("2d");
function validateInputs(){
var valid=true;
var h=parseFloat(heightInput.value);
var a=parseFloat(ageInput.value);
document.getElementById("error-heightCm").innerHTML="";
document.getElementById("error-ageYears").innerHTML="";
document.getElementById("error-frameSize").innerHTML="";
if(isNaN(h)){document.getElementById("error-heightCm").innerHTML="Enter a number for height.";valid=false;}
else if(h<=0){document.getElementById("error-heightCm").innerHTML="Height must be positive.";valid=false;}
else if(h200){document.getElementById("error-heightCm").innerHTML="Height should be between 130 cm and 200 cm.";valid=false;}
if(isNaN(a)){document.getElementById("error-ageYears").innerHTML="Enter a number for age.";valid=false;}
else if(a80){document.getElementById("error-ageYears").innerHTML="Age should be between 15 and 80.";valid=false;}
var f=frameInput.value;
if(f!=="small"&&f!=="medium"&&f!=="large"){document.getElementById("error-frameSize").innerHTML="Select a valid frame size.";valid=false;}
return valid;
}
function cmToInches(cm){return cm/2.54;}
function robinson(inches){return 49+1.7*(inches-60);}
function devine(inches){return 45.5+2.3*(inches-60);}
function miller(inches){return 53.1+1.36*(inches-60);}
function frameMultiplier(frame){
if(frame==="small"){return 0.93;}
if(frame==="large"){return 1.07;}
return 1.0;
}
function updateResults(){
if(!validateInputs()){return;}
var hCm=parseFloat(heightInput.value);
var hIn=cmToInches(hCm);
var wR=robinson(hIn);
var wD=devine(hIn);
var wM=miller(hIn);
var avg=(wR+wD+wM)/3;
var mult=frameMultiplier(frameInput.value);
var adjusted=avg*mult;
document.getElementById("heightInches").innerHTML=hIn.toFixed(2);
document.getElementById("robinsonWeight").innerHTML=wR.toFixed(2);
document.getElementById("devineWeight").innerHTML=wD.toFixed(2);
document.getElementById("millerWeight").innerHTML=wM.toFixed(2);
document.getElementById("avgWeight").innerHTML=avg.toFixed(2);
document.getElementById("frameAdjust").innerHTML=(mult===1?"No adjustment":(mult>1?"Large frame +7%":"Small frame -7%"));
document.getElementById("main-result").innerHTML="Ideal weight: "+adjusted.toFixed(2)+" kg";
document.getElementById("formulaNote").innerHTML="Blended Robinson, Devine, and Miller with frame "+frameInput.value+" multiplier.";
drawChart();
}
function resetCalculator(){
heightInput.value="165″;
frameInput.value="medium";
ageInput.value="32″;
document.getElementById("error-heightCm").innerHTML="";
document.getElementById("error-ageYears").innerHTML="";
document.getElementById("error-frameSize").innerHTML="";
updateResults();
}
function copyResults(){
var text="Women's ideal body weight calculator results:\\n";
text+="Height: "+heightInput.value+" cm ("+document.getElementById("heightInches").innerHTML+" in)\\n";
text+="Frame: "+frameInput.value+"\\n";
text+="Robinson: "+document.getElementById("robinsonWeight").innerHTML+" kg\\n";
text+="Devine: "+document.getElementById("devineWeight").innerHTML+" kg\\n";
text+="Miller: "+document.getElementById("millerWeight").innerHTML+" kg\\n";
text+="Average: "+document.getElementById("avgWeight").innerHTML+" kg\\n";
text+="Adjusted ideal: "+document.getElementById("main-result").innerHTML.replace("Ideal weight: ","");
if(navigator.clipboard&&navigator.clipboard.writeText){navigator.clipboard.writeText(text);}
}
function drawChart(){
var h=parseFloat(heightInput.value);
if(isNaN(h)){return;}
ctx.clearRect(0,0,chartCanvas.width,chartCanvas.height);
var padding=50;
var width=chartCanvas.width;
var height=chartCanvas.height;
var minHeight=140;
var maxHeight=190;
var steps=10;
var xs=[];
var ysMedium=[];
var ysLarge=[];
var i;
for(i=0;i<=steps;i++){
var hc=minHeight+(maxHeight-minHeight)*i/steps;
var hi=cmToInches(hc);
var base=(robinson(hi)+devine(hi)+miller(hi))/3;
ysMedium.push(base);
ysLarge.push(base*1.07);
xs.push(hc);
}
var maxWeight=0;
for(i=0;imaxWeight){maxWeight=ysLarge[i];}}
function toX(val){return padding+(width-2*padding)*(val-minHeight)/(maxHeight-minHeight);}
function toY(val){return height-padding-(height-2*padding)*(val)/(maxWeight*1.05);}
ctx.strokeStyle="#d9e2ec";
ctx.lineWidth=1;
for(i=0;i<=5;i++){
var gy=padding+(height-2*padding)*i/5;
ctx.beginPath();ctx.moveTo(padding,gy);ctx.lineTo(width-padding,gy);ctx.stroke();
}
ctx.strokeStyle="#1e2a35";
ctx.lineWidth=2;
ctx.beginPath();
for(i=0;i<xs.length;i++){
var x=toX(xs[i]);var y=toY(ysMedium[i]);
if(i===0){ctx.moveTo(x,y);}else{ctx.lineTo(x,y);}
}
ctx.stroke();
ctx.fillStyle="#1e2a35";
ctx.fillText("Medium frame",width-padding-120,padding+15);
ctx.strokeStyle="#28a745";
ctx.lineWidth=2;
ctx.beginPath();
for(i=0;i<xs.length;i++){
var x2=toX(xs[i]);var y2=toY(ysLarge[i]);
if(i===0){ctx.moveTo(x2,y2);}else{ctx.lineTo(x2,y2);}
}
ctx.stroke();
ctx.fillStyle="#28a745";
ctx.fillText("Large frame",width-padding-120,padding+30);
ctx.strokeStyle="#004a99";
ctx.lineWidth=2;
var currentX=toX(h);
var currentY=toY((robinson(cmToInches(h))+devine(cmToInches(h))+miller(cmToInches(h)))/3);
ctx.beginPath();ctx.arc(currentX,currentY,6,0,Math.PI*2);ctx.fillStyle="#004a99";ctx.fill();
ctx.fillStyle="#1e2a35";
ctx.fillText("Your height",currentX-25,currentY-10);
ctx.beginPath();
ctx.moveTo(padding,height-padding);
ctx.lineTo(width-padding,height-padding);
ctx.lineTo(width-padding-6,height-padding-4);
ctx.moveTo(width-padding,height-padding);
ctx.lineTo(width-padding-6,height-padding+4);
ctx.fillText("Height (cm)",width/2,height-10);
ctx.beginPath();
ctx.moveTo(padding,height-padding);
ctx.lineTo(padding,padding);
ctx.lineTo(padding-4,padding+6);
ctx.moveTo(padding,padding);
ctx.lineTo(padding+4,padding+6);
ctx.fillText("Ideal weight (kg)",10,padding-10);
}
updateResults();