Nutrition Label Calculator
Use this calculator to determine the nutritional values per serving for your homemade recipes or food products. Enter the total nutritional content for your entire batch or recipe, along with the number of servings you intend to get from it, and the calculator will provide the "per serving" values and their corresponding Daily Value (DV) percentages.
Nutrition Facts Per Serving
Enter values and click "Calculate" to see results.
function calculateNutrition() {
// Get input values
var totalCalories = parseFloat(document.getElementById("totalCalories").value);
var totalFat = parseFloat(document.getElementById("totalFat").value);
var totalSaturatedFat = parseFloat(document.getElementById("totalSaturatedFat").value);
var totalTransFat = parseFloat(document.getElementById("totalTransFat").value);
var totalCholesterol = parseFloat(document.getElementById("totalCholesterol").value);
var totalSodium = parseFloat(document.getElementById("totalSodium").value);
var totalCarbohydrates = parseFloat(document.getElementById("totalCarbohydrates").value);
var totalFiber = parseFloat(document.getElementById("totalFiber").value);
var totalSugars = parseFloat(document.getElementById("totalSugars").value);
var totalAddedSugars = parseFloat(document.getElementById("totalAddedSugars").value);
var totalProtein = parseFloat(document.getElementById("totalProtein").value);
var numberOfServings = parseFloat(document.getElementById("numberOfServings").value);
// Validate inputs
if (isNaN(totalCalories) || isNaN(totalFat) || isNaN(totalSaturatedFat) || isNaN(totalTransFat) ||
isNaN(totalCholesterol) || isNaN(totalSodium) || isNaN(totalCarbohydrates) || isNaN(totalFiber) ||
isNaN(totalSugars) || isNaN(totalAddedSugars) || isNaN(totalProtein) || isNaN(numberOfServings) ||
numberOfServings <= 0) {
document.getElementById("result").innerHTML = "Please enter valid numbers for all fields, and ensure 'Number of Servings' is greater than 0.";
return;
}
// Daily Value (DV) reference values based on a 2,000 calorie diet (FDA 2020)
var dvFatRef = 78; // g
var dvSaturatedFatRef = 20; // g
var dvCholesterolRef = 300; // mg
var dvSodiumRef = 2300; // mg
var dvCarbohydratesRef = 275; // g
var dvFiberRef = 28; // g
var dvAddedSugarsRef = 50; // g
var dvProteinRef = 50; // g (general reference, not always primary DV on label)
// Calculate per serving values
var caloriesPerServing = totalCalories / numberOfServings;
var fatPerServing = totalFat / numberOfServings;
var saturatedFatPerServing = totalSaturatedFat / numberOfServings;
var transFatPerServing = totalTransFat / numberOfServings;
var cholesterolPerServing = totalCholesterol / numberOfServings;
var sodiumPerServing = totalSodium / numberOfServings;
var carbohydratesPerServing = totalCarbohydrates / numberOfServings;
var fiberPerServing = totalFiber / numberOfServings;
var sugarsPerServing = totalSugars / numberOfServings;
var addedSugarsPerServing = totalAddedSugars / numberOfServings;
var proteinPerServing = totalProtein / numberOfServings;
// Calculate Daily Value percentages
var dvFat = (fatPerServing / dvFatRef) * 100;
var dvSaturatedFat = (saturatedFatPerServing / dvSaturatedFatRef) * 100;
var dvCholesterol = (cholesterolPerServing / dvCholesterolRef) * 100;
var dvSodium = (sodiumPerServing / dvSodiumRef) * 100;
var dvCarbohydrates = (carbohydratesPerServing / dvCarbohydratesRef) * 100;
var dvFiber = (fiberPerServing / dvFiberRef) * 100;
var dvAddedSugars = (addedSugarsPerServing / dvAddedSugarsRef) * 100;
var dvProtein = (proteinPerServing / dvProteinRef) * 100;
// Rounding for display (common nutrition label practices)
caloriesPerServing = Math.round(caloriesPerServing); // Round to nearest whole number
fatPerServing = Math.round(fatPerServing * 10) / 10; // One decimal place
saturatedFatPerServing = Math.round(saturatedFatPerServing * 10) / 10;
transFatPerServing = Math.round(transFatPerServing * 10) / 10;
cholesterolPerServing = Math.round(cholesterolPerServing); // Whole number
sodiumPerServing = Math.round(sodiumPerServing); // Whole number
carbohydratesPerServing = Math.round(carbohydratesPerServing * 10) / 10;
fiberPerServing = Math.round(fiberPerServing * 10) / 10;
sugarsPerServing = Math.round(sugarsPerServing * 10) / 10;
addedSugarsPerServing = Math.round(addedSugarsPerServing * 10) / 10;
proteinPerServing = Math.round(proteinPerServing * 10) / 10;
dvFat = Math.round(dvFat);
dvSaturatedFat = Math.round(dvSaturatedFat);
dvCholesterol = Math.round(dvCholesterol);
dvSodium = Math.round(dvSodium);
dvCarbohydrates = Math.round(dvCarbohydrates);
dvFiber = Math.round(dvFiber);
dvAddedSugars = Math.round(dvAddedSugars);
dvProtein = Math.round(dvProtein);
// Format results for display
var resultsHtml = "
";
resultsHtml += "| Calories | " + caloriesPerServing + " kcal | |
";
resultsHtml += "
|
";
resultsHtml += "| Total Fat | " + fatPerServing + " g | " + dvFat + "% DV |
";
resultsHtml += "| Saturated Fat | " + saturatedFatPerServing + " g | " + dvSaturatedFat + "% DV |
";
resultsHtml += "| Trans Fat | " + transFatPerServing + " g | |
";
resultsHtml += "| Cholesterol | " + cholesterolPerServing + " mg | " + dvCholesterol + "% DV |
";
resultsHtml += "| Sodium | " + sodiumPerServing + " mg | " + dvSodium + "% DV |
";
resultsHtml += "| Total Carbohydrates | " + carbohydratesPerServing + " g | " + dvCarbohydrates + "% DV |
";
resultsHtml += "| Dietary Fiber | " + fiberPerServing + " g | " + dvFiber + "% DV |
";
resultsHtml += "| Total Sugars | " + sugarsPerServing + " g | |
";
resultsHtml += "| Includes Added Sugars | " + addedSugarsPerServing + " g | " + dvAddedSugars + "% DV |
";
resultsHtml += "| Protein | " + proteinPerServing + " g | " + dvProtein + "% DV |
";
resultsHtml += "
";
resultsHtml += "
*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.";
document.getElementById("result").innerHTML = resultsHtml;
}
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font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background-color: #f9f9f9;
padding: 25px;
border-radius: 10px;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
max-width: 700px;
margin: 30px auto;
border: 1px solid #e0e0e0;
}
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color: #2c3e50;
text-align: center;
margin-bottom: 20px;
font-size: 1.8em;
}
.calculator-container p {
color: #555;
line-height: 1.6;
margin-bottom: 15px;
}
.calculator-form {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 15px 25px;
margin-bottom: 25px;
padding: 15px;
background-color: #ffffff;
border-radius: 8px;
border: 1px solid #e9ecef;
}
.form-group {
display: flex;
flex-direction: column;
}
.form-group label {
margin-bottom: 6px;
color: #34495e;
font-weight: bold;
font-size: 0.95em;
}
.form-group input[type="number"] {
padding: 10px 12px;
border: 1px solid #ccc;
border-radius: 5px;
font-size: 1em;
color: #333;
transition: border-color 0.3s ease;
}
.form-group input[type="number"]:focus {
border-color: #007bff;
outline: none;
box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}
.calculator-form button {
grid-column: 1 / -1;
padding: 12px 25px;
background-color: #28a745;
color: white;
border: none;
border-radius: 5px;
font-size: 1.1em;
cursor: pointer;
transition: background-color 0.3s ease, transform 0.2s ease;
margin-top: 10px;
}
.calculator-form button:hover {
background-color: #218838;
transform: translateY(-1px);
}
.calculator-form button:active {
transform: translateY(0);
}
.calculator-results {
background-color: #eaf7ed;
padding: 20px;
border-radius: 8px;
border: 1px solid #d4edda;
margin-top: 25px;
}
.calculator-results h3 {
color: #155724;
text-align: center;
margin-bottom: 15px;
font-size: 1.5em;
}
.calculator-results #result {
background-color: #ffffff;
padding: 15px;
border-radius: 5px;
border: 1px solid #c3e6cb;
}
.calculator-results table {
width: 100%;
border-collapse: collapse;
font-size: 1em;
}
.calculator-results table td {
padding: 8px 0;
border-bottom: 1px solid #eee;
}
.calculator-results table tr:last-child td {
border-bottom: none;
}
.calculator-results table td:first-child {
font-weight: normal;
color: #333;
padding-left: 5px;
}
.calculator-results table td:nth-child(2) {
text-align: right;
font-weight: bold;
color: #2c3e50;
}
.calculator-results table td:nth-child(3) {
text-align: right;
font-weight: bold;
color: #007bff;
width: 25%;
}
.calculator-results table hr {
border: none;
border-top: 2px solid #333;
margin: 5px 0;
}
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display: block;
margin-top: 15px;
color: #6c757d;
text-align: center;
font-size: 0.85em;
}
@media (max-width: 600px) {
.calculator-form {
grid-template-columns: 1fr;
}
}
Understanding the Nutrition Label Calculator
Creating accurate nutrition labels for your homemade recipes or small-batch food products is crucial for informing consumers and adhering to dietary guidelines. Our Nutrition Label Calculator simplifies this process by allowing you to input the total nutritional content of your entire recipe or batch and then automatically calculating the "per serving" values, along with their corresponding Percent Daily Values (% DV).
Why is a Nutrition Label Important?
- Informed Choices: Consumers rely on nutrition labels to make informed decisions about what they eat, especially those managing health conditions like diabetes, heart disease, or allergies.
- Dietary Planning: Labels help individuals track their intake of calories, fats, sugars, and other nutrients to meet their dietary goals.
- Regulatory Compliance: In many regions, food products sold commercially are legally required to display nutrition information. Even for home cooks, understanding these values can be beneficial.
- Recipe Optimization: By seeing the nutritional breakdown, you can identify areas to adjust ingredients for healthier outcomes, such as reducing saturated fat or added sugars.
How to Use This Calculator
To get the most accurate results, you'll need to know the total nutritional content of all ingredients in your recipe. This can be obtained from:
- Ingredient Databases: Many online resources (e.g., USDA FoodData Central, manufacturer websites) provide detailed nutritional information for raw ingredients.
- Food Labels: For packaged ingredients, refer to their existing nutrition labels.
- Recipe Analysis Software: More advanced tools can analyze recipes ingredient by ingredient.
Once you have the total values for calories, fat, carbohydrates, protein, etc., for your entire batch, simply enter them into the respective fields. Then, specify how many servings your recipe yields. The calculator will do the rest!
Understanding Daily Values (% DV)
The Percent Daily Value (% DV) on a nutrition label helps you understand if a serving of food contributes a little or a lot to your daily diet for each nutrient. It's based on a 2,000-calorie daily diet for adults. Generally:
- 5% DV or less is considered a low source of that nutrient.
- 20% DV or more is considered a high source of that nutrient.
For example, if a serving has 25% DV for Total Fat, it means that one serving provides 25% of the total fat recommended for a 2,000-calorie diet. This calculator uses the most recent FDA Daily Value reference amounts (2020 guidelines).
Example Calculation: A Batch of Homemade Granola Bars
Let's say you've made a batch of granola bars and want to know the nutrition per bar. After adding up all your ingredients, you find the following totals for the entire batch:
- Total Calories: 1800 kcal
- Total Fat: 80 g
- Total Saturated Fat: 25 g
- Total Trans Fat: 0 g
- Total Cholesterol: 200 mg
- Total Sodium: 1500 mg
- Total Carbohydrates: 220 g
- Total Dietary Fiber: 30 g
- Total Sugars: 80 g
- Total Added Sugars: 40 g
- Total Protein: 100 g
- Number of Servings (bars): 6
Using the calculator, you would input these values. The calculator would then divide each total by 6 to give you the per-serving values:
- Calories per serving: 1800 / 6 = 300 kcal
- Total Fat per serving: 80 / 6 = 13.3 g (approx.)
- Saturated Fat per serving: 25 / 6 = 4.2 g (approx.)
- Sodium per serving: 1500 / 6 = 250 mg
- And so on for all other nutrients.
It would also calculate the % DV for each, helping you understand the nutritional impact of one granola bar.
This tool is an excellent resource for anyone looking to gain a deeper understanding of their food's nutritional profile, whether for personal health, recipe development, or small-scale food production.