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Glycemic Load (GL) & Glycemic Index Calculator

Calculate dietary Glycemic Load (GL) from Glycemic Index (GI) and net carbohydrate portions to predict blood glucose and insulin surges.

Calculated Results

Calculated Glycemic Load (GL)
21.6 (High GL)
High blood sugar spike & insulin response
GL Classification
High (20+)
Low: ≤10 | Med: 11-19 | High: ≥20
GI Classification
High GI (72)
Low: ≤55 | Med: 56-69 | High: ≥70
Available Net Carbs
30.0 Grams
Total carbs minus dietary fiber
Dietary Recommendation
Pair with Protein & Fat
Blunts postprandial glucose spike
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Frequently Asked Questions

What is the difference between Glycemic Index (GI) and Glycemic Load (GL)?

Glycemic Index (GI) measures how rapidly a carbohydrate raises blood glucose compared to pure glucose (rated 100), regardless of portion size. Glycemic Load (GL) accounts for both the quality of carbohydrate AND the actual portion quantity eaten: GL = (GI × Available Carbohydrates in grams) / 100.

Why is watermelon high GI but low Glycemic Load?

Watermelon has a high Glycemic Index (72) because its sugars absorb quickly. However, a typical serving is 92% water with very few total carbs (only 6g carbs per 100g). A standard serving has a low Glycemic Load of just 5, meaning it will not spike blood sugar in normal portions.

What are the official Glycemic Load categories?

Low GL: 10 or less (minimal impact on blood sugar). Medium GL: 11 to 19 (moderate impact). High GL: 20 or greater (causes a substantial glucose and insulin surge).

Why is Glycemic Load crucial for diabetes and PCOS management?

Maintaining a low-GL diet reduces insulin resistance, lowers HbA1c levels, prevents reactive hypoglycemia crashes, reduces cravings, and improves lipid profiles.