Quickly determine per‑serving nutrition for any recipe.
Enter Recipe Totals
Sum of calories for the whole recipe.
Total grams of fat in the recipe.
Total grams of carbs in the recipe.
Total grams of protein in the recipe.
How many equal servings the recipe yields.
Per‑Serving Nutrition Table
Metric
Per Serving
Calories (kcal)
–
Fat (g)
–
Carbohydrates (g)
–
Protein (g)
–
Table 1: Calculated per‑serving nutrition values.
Chart 1: Macro distribution per serving.
What is Nutrition Facts Recipe Calculator?
The nutrition facts recipe calculator is a tool that converts the total nutritional content of a whole recipe into per‑serving values. It helps home cooks, dietitians, and food manufacturers understand how many calories, grams of fat, carbohydrates, and protein each portion contains. Anyone who wants to track intake, label packaged foods, or adjust recipes for health goals should use a nutrition facts recipe calculator. Common misconceptions include believing that the calculator can estimate micronutrients without data, or that it automatically adjusts ingredient quantities – it simply divides totals by the number of servings.
Nutrition Facts Recipe Calculator Formula and Mathematical Explanation
The core formula is straightforward: each per‑serving metric equals the total metric divided by the number of servings.
Per‑Serving = Total ÷ Servings
Variables are defined below:
Variable
Meaning
Unit
Typical Range
Total Calories
Sum of calories in the whole recipe
kcal
0‑10,000
Total Fat
Total grams of fat
g
0‑500
Total Carbohydrates
Total grams of carbs
g
0‑1,000
Total Protein
Total grams of protein
g
0‑500
Servings
Number of equal portions
count
1‑100
Practical Examples (Real‑World Use Cases)
Example 1: Family Dinner
Inputs: Total Calories = 2400 kcal, Total Fat = 96 g, Total Carbs = 300 g, Total Protein = 120 g, Servings = 6.
Outputs: Per‑Serving Calories = 400 kcal, Fat = 16 g, Carbs = 50 g, Protein = 20 g.
This helps the family ensure each plate meets their dietary targets.
Example 2: Meal‑Prep for Athletes
Inputs: Total Calories = 3200 kcal, Total Fat = 80 g, Total Carbs = 400 g, Total Protein = 200 g, Servings = 8.
Outputs: Per‑Serving Calories = 400 kcal, Fat = 10 g, Carbs = 50 g, Protein = 25 g.
Athletes can plan macro‑balanced meals for performance.
How to Use This Nutrition Facts Recipe Calculator
Enter the total nutrition values for your entire recipe.
Specify the number of equal servings the recipe yields.
The per‑serving results appear instantly below.
Review the table and macro chart to understand the distribution.
Use the "Copy Results" button to paste the data into labels or spreadsheets.
Adjust ingredient amounts and re‑calculate as needed.
Key Factors That Affect Nutrition Facts Recipe Calculator Results
Ingredient Variability: Different brands may have varying macro contents.
Cooking Losses: Heat can reduce water‑soluble nutrients, affecting totals.
var totalCalories=document.getElementById('totalCalories');
var totalFat=document.getElementById('totalFat');
var totalCarbs=document.getElementById('totalCarbs');
var totalProtein=document.getElementById('totalProtein');
var servings=document.getElementById('servings');
var resultDiv=document.getElementById('result');
var perCal=document.getElementById('perCal');
var perFat=document.getElementById('perFat');
var perCarb=document.getElementById('perCarb');
var perProtein=document.getElementById('perProtein');
var canvas=document.getElementById('macroChart');
var ctx=canvas.getContext('2d');
function validate(){
var valid=true;
var fields=[
{id:'totalCalories',min:0,max:10000},
{id:'totalFat',min:0,max:500},
{id:'totalCarbs',min:0,max:1000},
{id:'totalProtein',min:0,max:500},
{id:'servings',min:1,max:100}
];
for(var i=0;i<fields.length;i++){
var f=fields[i];
var el=document.getElementById(f.id);
var err=document.getElementById('err_'+f.id);
var val=parseFloat(el.value);
if(isNaN(val)||el.value===''||valf.max){
err.textContent='Please enter a valid number between '+f.min+' and '+f.max+'.';
valid=false;
}else{
err.textContent=";
}
}
return valid;
}
function calculate(){
if(!validate()){
resultDiv.textContent='Please correct errors above.';
perCal.textContent='-';
perFat.textContent='-';
perCarb.textContent='-';
perProtein.textContent='-';
clearChart();
return;
}
var cal=parseFloat(totalCalories.value);
var fat=parseFloat(totalFat.value);
var carb=parseFloat(totalCarbs.value);
var protein=parseFloat(totalProtein.value);
var serv=parseFloat(servings.value);
var perCalVal=(cal/serv).toFixed(1);
var perFatVal=(fat/serv).toFixed(1);
var perCarbVal=(carb/serv).toFixed(1);
var perProtVal=(protein/serv).toFixed(1);
perCal.textContent=perCalVal;
perFat.textContent=perFatVal;
perCarb.textContent=perCarbVal;
perProtein.textContent=perProtVal;
resultDiv.textContent='Per Serving Calories: '+perCalVal+' kcal';
drawChart(perFatVal,perCarbVal,perProtVal);
}
function drawChart(fat,carb,protein){
var total=parseFloat(fat)+parseFloat(carb)+parseFloat(protein);
var fatPct=(fat/total)*100;
var carbPct=(carb/total)*100;
var protPct=(protein/total)*100;
ctx.clearRect(0,0,canvas.width,canvas.height);
var barWidth=80;
var spacing=40;
var baseX=60;
var baseY=200;
// Fat bar
ctx.fillStyle='#ff9999′;
ctx.fillRect(baseX,baseY-(fatPct*1.5),barWidth,fatPct*1.5);
// Carb bar
ctx.fillStyle='#99ccff';
ctx.fillRect(baseX+barWidth+spacing,baseY-(carbPct*1.5),barWidth,carbPct*1.5);
// Protein bar
ctx.fillStyle='#99ff99′;
ctx.fillRect(baseX+2*(barWidth+spacing),baseY-(protPct*1.5),barWidth,protPct*1.5);
// Labels
ctx.fillStyle='#000′;
ctx.font='14px Arial';
ctx.fillText('Fat '+fatPct.toFixed(0)+'%',baseX,baseY+20);
ctx.fillText('Carb '+carbPct.toFixed(0)+'%',baseX+barWidth+spacing,baseY+20);
ctx.fillText('Protein '+protPct.toFixed(0)+'%',baseX+2*(barWidth+spacing),baseY+20);
// Legend
ctx.fillStyle='#ff9999′;
ctx.fillRect(10,10,15,15);
ctx.fillStyle='#000′;
ctx.fillText('Fat',30,22);
ctx.fillStyle='#99ccff';
ctx.fillRect(10,35,15,15);
ctx.fillStyle='#000′;
ctx.fillText('Carbs',30,47);
ctx.fillStyle='#99ff99′;
ctx.fillRect(10,60,15,15);
ctx.fillStyle='#000′;
ctx.fillText('Protein',30,72);
}
function clearChart(){
ctx.clearRect(0,0,canvas.width,canvas.height);
}
function resetDefaults(){
totalCalories.value=2000;
totalFat.value=80;
totalCarbs.value=250;
totalProtein.value=100;
servings.value=4;
calculate();
}
function copyResults(){
var text='Nutrition Facts Recipe Calculator Results\n';
text+='Per Serving Calories: '+perCal.textContent+' kcal\n';
text+='Per Serving Fat: '+perFat.textContent+' g\n';
text+='Per Serving Carbs: '+perCarb.textContent+' g\n';
text+='Per Serving Protein: '+perProtein.textContent+' g\n';
text+='Assumptions: totals divided by number of servings.';
if(navigator.clipboard){
navigator.clipboard.writeText(text).then(function(){alert('Results copied to clipboard');});
}else{
alert('Clipboard API not supported.');
}
}
// Initial calculation on load
calculate();