Blood Sugar Converter Calculator

- May 09, 2025
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Convert blood glucose values between mg/dL and mmol/L units. This calculator provides instant conversion for diabetes management and international reference.

Blood Glucose Conversion

mg/dL
OR
mmol/L

Display Options

Conversion Result

mg/dL Value
100
mg/dL
mmol/L Value
5.6
mmol/L

Conversion Formula

mg/dL to mmol/L:
mmol/L = mg/dL ÷ 18.0182
mmol/L to mg/dL:
mg/dL = mmol/L × 18.0182

The conversion factor 18.0182 is based on the molecular weight of glucose and is the standard factor used in medical conversions.

Common Values Reference Table

Blood Glucose Level mg/dL mmol/L
Low (Hypoglycaemia) < 70 < 3.9
Normal Fasting (Non-diabetic) 70 - 99 3.9 - 5.5
Prediabetes (Fasting) 100 - 125 5.6 - 6.9
Diabetes (Fasting) ≥ 126 ≥ 7.0
Target Range (Diabetic) 80 - 180 4.4 - 10.0
High (Hyperglycaemia) > 180 > 10.0

Note: Target ranges may vary based on individual factors and medical advice.

About Blood Glucose Units

Blood glucose (blood sugar) concentration is measured in different units worldwide. The United States, Japan, and several other countries use milligrams per deciliter (mg/dL), while the United Kingdom, Canada, Australia, and most of Europe use millimoles per litre (mmol/L).

Why Different Units?

The mg/dL unit measures the weight of glucose in a specific volume of blood, while mmol/L represents the number of glucose molecules in that volume. Healthcare professionals use these measurements to assess diabetes management, diagnose conditions, and adjust treatment plans.

When You Need Conversion
  • Travelling to countries that use different units
  • Reading international medical literature or research
  • Using glucose meters or continuous glucose monitors with different unit settings
  • Communicating with healthcare providers who use different units

Disclaimer: This calculator is provided for educational and reference purposes only. Always consult with your healthcare provider regarding blood glucose readings and diabetes management.

Understanding the Blood Sugar Converter Calculator

The Blood Sugar Converter Calculator is a handy tool for anyone needing to convert blood glucose values. It allows users to switch between two common units: mg/dL, used in countries like the US and Japan, and mmol/L, which is preferred in the UK and Canada. This calculator serves as a quick reference, making Diabetes management easier for people around the world.

How It Works

Using the calculator is straightforward. Users simply enter their blood glucose level in either mg/dL or mmol/L. The tool then instantly provides the equivalent value in the Other unit. This makes it very useful for those who travel or communicate with healthcare providers in different regions.

Why Conversion Matters

  • Understanding blood sugar levels in various countries.
  • Reading medical articles that may use different measurement units.
  • Using glucose meters that may display readings in either unit.
  • Ensuring clear communication with healthcare professionals.

Deciding on Display Options

The calculator offers display options for users who want to customise their experience. You can choose how many decimal places to show for mmol/L values, making it easier to read according to personal preference. Additionally, there's an option to display the conversion formula, which can be informative for those who want to understand the math behind the conversions.

The Conversion Formula Explained

Understanding the conversion formula can enhance your knowledge of blood sugar measurements. The standard equations are:
For converting mg/dL to mmol/L: mmol/L = mg/dL ÷ 18.0182
For converting mmol/L to mg/dL: mg/dL = mmol/L × 18.0182.
This factor is based on the molecular weight of glucose and is widely accepted in medical practice.

Reference for Blood Sugar Levels

The calculator includes a helpful reference table that shows common blood glucose levels. It categorises different ranges, including what is considered low, normal, and high. This can be a useful guide to help users understand where their readings may fall.

Practical Uses of the Calculator

  • People travelling to countries with different measurement systems.
  • Patients wanting to monitor their diabetes across different healthcare settings.
  • Researchers reading studies from various parts of the world.
  • Anyone curious about their blood sugar level in both units.

Important Considerations for Users

This calculator is designed for educational purposes and should not replace professional medical advice. Always consult a healthcare provider for guidance on managing blood glucose levels. The information provided is intended to assist in understanding your blood sugar readings and their implications for your Health.