Glycemic Load Calculator

Gauge how a food affects blood sugar by combining its glycemic index with the carbs in your serving.

NutritionScience-backed formula
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Enter the glycemic index.
Enter the carb grams.

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What Glycemic Load Measures

Glycemic load shows how much a real serving of food raises your blood sugar. It improves on the glycemic index by adding portion size.

Food and goals turn into simple daily targets you can hit.

A food can rank high on the index yet deliver a low load if the serving holds few carbs. Watermelon is a classic example.

Lower-load meals keep energy steady and curb cravings.

How to Use This Calculator

  1. Enter the food's glycemic index.
  2. Enter the carbohydrate grams in your serving.
  3. Tap Calculate for the glycemic load.

The Formula Used

GL = (GI × carbs in grams) / 100
GI
The glycemic index of the food, from 0 to 110.
carbs
Grams of carbohydrate in your serving.

Understanding Your Results

Low load
10 or below
Gentle on blood sugar.
Medium load
11 to 19
A moderate rise.
High load
20 or above
A sharp blood-sugar spike.

Tips to Improve

  • Pair carbs with protein, fat, or fibre to lower the load.
  • Choose whole foods over refined ones.
  • Watch portion size, since it drives the load.
  • Spread carbs across the day.

Frequently Asked Questions

The index rates a food's quality. The load adds your serving size for a real-world impact.

Public databases such as the University of Sydney glycemic index site list common foods.

It can steady energy and help blood-sugar control, but total diet quality matters most.

Scientific References

  1. Atkinson, F. S., et al. (2021). International tables of glycemic index and glycemic load values. American Journal of Clinical Nutrition, 114(5), 1625–1632.
  2. Salmerón, J., et al. (1997). Dietary fiber, glycemic load, and risk of diabetes. JAMA, 277(6), 472–477.
  3. Jenkins, D. J., et al. (1981). Glycemic index of foods. American Journal of Clinical Nutrition, 34(3), 362–366.

Disclaimer: The calculators and information on this site are provided for general informational use only and do not replace professional medical advice, diagnosis, or treatment. Always speak with a qualified healthcare professional about any questions regarding your health.