.blood-sugar-calculator-container {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
max-width: 700px;
margin: 20px auto;
padding: 25px;
border: 1px solid #e0e0e0;
border-radius: 10px;
background-color: #f9f9f9;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
color: #333;
}
.blood-sugar-calculator-container h2 {
text-align: center;
color: #2c3e50;
margin-bottom: 25px;
font-size: 1.8em;
}
.blood-sugar-calculator-container .input-group {
margin-bottom: 18px;
display: flex;
flex-direction: column;
}
.blood-sugar-calculator-container label {
display: block;
margin-bottom: 8px;
font-weight: bold;
color: #555;
font-size: 0.95em;
}
.blood-sugar-calculator-container input[type="number"],
.blood-sugar-calculator-container select {
width: calc(100% – 22px);
padding: 12px;
border: 1px solid #ccc;
border-radius: 6px;
font-size: 1em;
box-sizing: border-box;
transition: border-color 0.3s ease;
}
.blood-sugar-calculator-container input[type="number"]:focus,
.blood-sugar-calculator-container select:focus {
border-color: #007bff;
outline: none;
box-shadow: 0 0 5px rgba(0, 123, 255, 0.2);
}
.blood-sugar-calculator-container button {
display: block;
width: 100%;
padding: 14px;
background-color: #007bff;
color: white;
border: none;
border-radius: 6px;
font-size: 1.1em;
font-weight: bold;
cursor: pointer;
transition: background-color 0.3s ease, transform 0.2s ease;
margin-top: 25px;
}
.blood-sugar-calculator-container button:hover {
background-color: #0056b3;
transform: translateY(-1px);
}
.blood-sugar-calculator-container #bloodSugarResult {
margin-top: 30px;
padding: 20px;
border: 1px solid #d4edda;
background-color: #eaf7ee;
border-radius: 8px;
font-size: 1.1em;
color: #155724;
line-height: 1.6;
text-align: center;
font-weight: 500;
}
.blood-sugar-calculator-container #bloodSugarResult strong {
color: #0a3622;
}
.blood-sugar-calculator-container .article-content {
margin-top: 40px;
padding-top: 30px;
border-top: 1px solid #eee;
color: #444;
line-height: 1.7;
font-size: 1em;
}
.blood-sugar-calculator-container .article-content h3 {
color: #2c3e50;
margin-top: 25px;
margin-bottom: 15px;
font-size: 1.4em;
}
.blood-sugar-calculator-container .article-content p {
margin-bottom: 15px;
}
.blood-sugar-calculator-container .article-content ul {
list-style-type: disc;
margin-left: 20px;
margin-bottom: 15px;
}
.blood-sugar-calculator-container .article-content li {
margin-bottom: 8px;
}
.blood-sugar-calculator-container .disclaimer {
font-size: 0.85em;
color: #777;
margin-top: 30px;
padding: 15px;
background-color: #f0f0f0;
border-left: 4px solid #ffc107;
border-radius: 4px;
}
function calculateBloodSugar() {
var bloodGlucoseValueInput = document.getElementById("bloodGlucoseValue");
var currentUnit = document.getElementById("currentUnit").value;
var readingContext = document.getElementById("readingContext").value;
var resultDiv = document.getElementById("bloodSugarResult");
var value = parseFloat(bloodGlucoseValueInput.value);
if (isNaN(value) || value <= 0) {
resultDiv.innerHTML = "Please enter a valid positive blood glucose value.";
resultDiv.style.backgroundColor = '#f8d7da';
resultDiv.style.borderColor = '#f5c6cb';
resultDiv.style.color = '#721c24';
return;
}
var mgdlValue;
var mmolLValue;
var conversionFactor = 18.018; // Approximate conversion factor
if (currentUnit === "mg/dL") {
mgdlValue = value;
mmolLValue = value / conversionFactor;
} else { // currentUnit === "mmol/L"
mmolLValue = value;
mgdlValue = value * conversionFactor;
}
var interpretation = "";
var status = "";
var statusColor = "";
// General interpretation guidelines (for adults, non-diabetic and diabetic targets)
// These are general guidelines and can vary based on individual health conditions.
if (readingContext === "fasting") {
if (mgdlValue = 70 && mgdlValue = 100 && mgdlValue = 126) {
status = "High (Diabetes Range)";
interpretation = "Your fasting blood sugar is in the diabetic range. Consult a doctor for diagnosis and management.";
statusColor = '#dc3545'; // Danger red
}
} else if (readingContext === "afterMeal") {
if (mgdlValue = 70 && mgdlValue = 140 && mgdlValue = 200) {
status = "High (Diabetes Range)";
interpretation = "Your post-meal blood sugar is in the diabetic range. Consult a doctor for diagnosis and management.";
statusColor = '#dc3545';
}
} else if (readingContext === "beforeMeal" || readingContext === "bedtime" || readingContext === "random") {
// For these contexts, general ranges are broader and often depend on individual targets.
// Providing a more general interpretation for non-fasting/non-post-meal.
if (mgdlValue = 70 && mgdlValue = 180) {
status = "High (Hyperglycemia)";
interpretation = "Your blood sugar is high. This could indicate hyperglycemia. Consult a doctor.";
statusColor = '#dc3545';
}
}
resultDiv.innerHTML =
"Blood Glucose Value:" +
value.toFixed(1) + " " + currentUnit + " converts to " +
mgdlValue.toFixed(1) + " mg/dL and " +
mmolLValue.toFixed(1) + " mmol/L." +
"Context: " + document.getElementById("readingContext").options[document.getElementById("readingContext").selectedIndex].text + "" +
"Interpretation: " + status + "" +
interpretation + "" +
"Note: These are general guidelines. Always consult a healthcare professional for personalized advice.";
resultDiv.style.backgroundColor = '#eaf7ee'; // Default success background
resultDiv.style.borderColor = '#d4edda'; // Default success border
resultDiv.style.color = '#155724'; // Default success text color
// Adjust background/border/text color based on status for better visual feedback
if (statusColor === '#ffc107') { // Warning
resultDiv.style.backgroundColor = '#fff3cd';
resultDiv.style.borderColor = '#ffeeba';
resultDiv.style.color = '#856404';
} else if (statusColor === '#dc3545') { // Danger
resultDiv.style.backgroundColor = '#f8d7da';
resultDiv.style.borderColor = '#f5c6cb';
resultDiv.style.color = '#721c24';
}
}
Blood Sugar Level Calculator & Converter
mg/dL (milligrams per deciliter)
mmol/L (millimoles per liter)
Fasting (no food for 8+ hours)
Before a Meal
1-2 Hours After a Meal
Bedtime
Random (any time)
Enter your blood glucose value and select the units to see the conversion and interpretation.
Understanding Your Blood Sugar Levels
Blood sugar, or blood glucose, is the main sugar found in your blood. It comes from the food you eat and is your body's main source of energy. Your blood carries glucose to all of your body's cells to be used for energy. Monitoring your blood sugar levels is crucial, especially for individuals with diabetes or those at risk, to manage their health effectively and prevent complications.
Units of Measurement: mg/dL vs. mmol/L
Blood glucose levels are measured in two primary units globally:
- Milligrams per deciliter (mg/dL): This unit is commonly used in the United States and some other countries. It measures the concentration of glucose in a deciliter of blood.
- Millimoles per liter (mmol/L): This unit is used in most other parts of the world, including Canada, the UK, Australia, and Europe. It measures the molar concentration of glucose in a liter of blood.
The conversion factor between these two units is approximately 18.018. Our calculator can help you convert between these units instantly.
Interpreting Your Blood Sugar Levels
The interpretation of your blood sugar level depends heavily on the context of when the reading was taken. Here are general guidelines for adults without diabetes, and for those with diabetes (target ranges may vary based on individual health conditions and doctor's recommendations):
For Adults Without Diabetes:
- Fasting (8+ hours without food):
- Normal: Less than 100 mg/dL (5.6 mmol/L)
- Prediabetes: 100 to 125 mg/dL (5.6 to 6.9 mmol/L)
- Diabetes: 126 mg/dL (7.0 mmol/L) or higher
- 1-2 Hours After a Meal:
- Normal: Less than 140 mg/dL (7.8 mmol/L)
- Random (any time of day):
- Normal: Typically below 140 mg/dL (7.8 mmol/L), but can be higher after meals.
For Adults With Diabetes (General Targets – Consult Your Doctor):
- Fasting/Before Meal: 80 to 130 mg/dL (4.4 to 7.2 mmol/L)
- 1-2 Hours After a Meal: Less than 180 mg/dL (10.0 mmol/L)
- Bedtime: 100 to 140 mg/dL (5.6 to 7.8 mmol/L)
These are general guidelines. Your personal target ranges may differ based on your age, duration of diabetes, presence of complications, and other health conditions. Always discuss your specific targets with your healthcare provider.
Why Monitor Blood Sugar?
Regular monitoring helps you and your doctor understand how food, exercise, medication, and stress affect your blood sugar levels. It's a vital tool for:
- Making informed decisions about diet and physical activity.
- Adjusting medication dosages if necessary.
- Preventing immediate complications like hypoglycemia (low blood sugar) or hyperglycemia (high blood sugar).
- Reducing the risk of long-term complications such as heart disease, kidney disease, nerve damage, and vision problems.
Disclaimer: This calculator provides general information and conversions for blood glucose levels. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider for any health concerns or before making any decisions related to your health or treatment.