Blood Sugar mg/dL to mmol/L: An Easy Conversion Guide and Chart

24 Aug 2025

Blood Sugar mg/dL to mmol/L: An Easy Conversion Guide and Chart Understanding your blood sugar levels is essential for managing conditions like diabet...

Blood Sugar mg/dL to mmol/L: An Easy Conversion Guide and Chart

Understanding your blood sugar levels is essential for managing conditions like diabetes. Blood sugar is typically measured in either milligrams per deciliter (mg/dL) or millimoles per liter (mmol/L), depending on the region or medical standard. This article provides a comprehensive guide and a helpful chart to convert blood sugar readings from mg/dL to mmol/L and vice versa.

Why the Different Units?

The choice between mg/dL and mmol/L often comes down to regional standards. In the United States, mg/dL is the most common unit. However, in many other countries, particularly those following the International System of Units (SI), mmol/L is preferred. Understanding both units is vital, especially if you travel or consult medical resources from different regions. Accurate conversion ensures that you correctly interpret and communicate your blood glucose levels to healthcare professionals.

Related reading: Your Fasting Blood Sugar Level What It Means And When To Worry

The Conversion Formula

The key to converting between mg/dL and mmol/L lies in a simple formula. Here’s how to convert:

  • mg/dL to mmol/L: Divide the mg/dL value by 18.
  • mmol/L to mg/dL: Multiply the mmol/L value by 18.

Example: * If your blood sugar is 100 mg/dL, the equivalent in mmol/L is 100 / 18 = 5.56 mmol/L (approximately). * If your blood sugar is 7 mmol/L, the equivalent in mg/dL is 7 * 18 = 126 mg/dL.

This simple calculation empowers you to seamlessly switch between the two measurement systems.

Quick Conversion Chart

For quick reference, use this convenient chart for converting common blood sugar levels between mg/dL and mmol/L.

mg/dL mmol/L (Approximate)
70 3.9
80 4.4
90 5.0
100 5.6
110 6.1
120 6.7
130 7.2
140 7.8
150 8.3
160 8.9
170 9.4
180 10.0
190 10.6
200 11.1

Note: These conversions are approximate and rounded to one decimal place.

Understanding Healthy Blood Sugar Ranges

Related reading: Managing Blood Sugar 5 Simple Lifestyle Changes For Better Glucose Control

Knowing your blood sugar reading is only half the battle; understanding what constitutes a healthy range is equally important. Acceptable ranges can vary depending on individual factors like age, medical history, and specific health conditions like diabetes. Generally speaking, healthy ranges are:

  • Fasting blood sugar: (mg/dL: 70-100, mmol/L: 3.9-5.6)
  • 2 hours after eating: (mg/dL: Less than 140, mmol/L: Less than 7.8)

Related reading: Prediabetes Vs Diabetes Understanding The Crucial Differences

It is important to consult with a healthcare professional to determine your individual target ranges, especially if you have diabetes or other health concerns. Regular blood glucose monitoring is crucial for managing your health effectively.

Tips for Managing Blood Sugar

Managing blood sugar levels effectively is key to maintaining overall health, especially for those with diabetes. Here are a few practical tips:

  • Balanced Diet: Focus on consuming a balanced diet rich in whole grains, lean proteins, and plenty of fruits and vegetables. Limit processed foods, sugary drinks, and excessive amounts of saturated and unhealthy fats.
  • Regular Exercise: Engage in regular physical activity, such as brisk walking, swimming, or cycling. Exercise helps improve insulin sensitivity and lowers blood glucose.
  • Consistent Monitoring: Regularly monitor your blood sugar levels as advised by your healthcare provider. This helps you understand how your body responds to different foods, activities, and medications.
  • Medication Adherence: If prescribed, take your medications as directed by your doctor. Consistency is crucial for maintaining stable blood sugar.
  • Stress Management: Practice stress-reducing activities like yoga, meditation, or deep breathing exercises. Stress can significantly impact blood sugar levels.
  • Adequate Hydration: Drink plenty of water throughout the day to help regulate blood sugar and support overall health.

Conclusion

Converting between mg/dL and mmol/L for blood sugar readings is a straightforward process with a simple formula. Using the chart provided, along with understanding the healthy blood sugar ranges, empowers you to take control of your health. Regular blood glucose monitoring, coupled with lifestyle adjustments like a balanced diet and exercise, can significantly contribute to maintaining healthy blood sugar levels and overall well-being. Always consult with your healthcare provider for personalized advice and guidance.