Example 1
- GI = 72
- 40 g carbohydrates
28.8
What load at GI 72 and 40 g? 28.8. Fibre does not enter this result.
Glycaemic load calculator
Type GI and carbohydrate grams. 72 and 40 g give 28.8. 55 and 30 g give 16.5. 40 and 25 g give 10.0. This is load, not the index alone. Fibre only fills the net row.
Not a clinic verdict and not a diabetes meal plan. The main result is GL from total carbohydrates. Fibre does not change 28.8.
Results
Enter data and click Calculate.
How it works
Glycaemic load in this calculator is GI times carbohydrate grams, over 100. 72 × 40 / 100 = 28.8. The calculator writes 28.8 with one decimal place. 55 × 30 / 100 = 16.5. 40 × 25 / 100 = 10.0. GI alone is not enough.
Fibre subtracts only on the net row: netCarbs = max(0, carbohydrates − fibre), then the same product. Empty fibre or 0 hides that row. 28.8 stays 28.8.
Low / medium / high uses 10 and 19. 10.0 is low (GL ≤ 10). 16.5 is medium. 28.8 is high. Those cuts sit in the script, not in a doctor note.
Net carbohydrates from fibre live on another calculator. Here the load from GI. A weight and TDEE profile is optional and does not move 28.8.
Type GI, type grams, then Calculate. Zero GI leaves a blank. A comma in 55.5 parses. A serving sketch, not a clinic plan.
72 and 40 g give 28.8. 55 and 30 g give 16.5. 40 and 25 g give 10.0. Fibre stays empty in the examples so the result is that load.
Formula
GL = GI × carbohydrates / 100
How to use
- Type the product GI, for example 72.
- Type carbohydrates in grams, for example 40.
- Click Calculate. The result is 28.8.
- 55 and 30 g give 16.5. 40 and 25 g give 10.0.
- Fibre is a net option. Net carbohydrates live on the neighbouring card.
GI 72 and 40 g = 28.8
GL = GI × carbohydrates / 100. 72 and 40 give 28.8. Fibre does not change this result.
- load
- GI times grams over 100. 72 and 40 show 28.8. Not the index alone.
- carbohydrates
- Field b in grams. 55 and 30 give 16.5. Fibre does not subtract them here.
- fibre
- A net option. Empty leaves 28.8. 40 minus 12 g lives on net carbohydrates.
Examples
Example 2
- GI = 55
- 30 g carbohydrates
16.5
What load at GI 55 and 30 g? 16.5.
Example 3
- GI = 40
- 25 g carbohydrates
10.0
What load at GI 40 and 25 g? 10.0.
Related calculators
Common questions
What load at GI 72 and 40 g?
28.8. 72 × 40 / 100, then one decimal place.
What about 55 and 30 g?
16.5. The same GL formula.
What about 40 and 25 g?
10.0. GL ≤ 10 is low in the script.
Does fibre change 28.8?
No. The main result uses total carbohydrates. Fibre lives on the net row.
How is load different from the index?
The index is a product trait. Load multiplies it by serving grams and divides by 100.
Is 28.8 a meal plan?
No. A serving sketch. Not a clinic verdict and not a diabetes plan.
What if GI is 0?
A blank. GI must be positive.
Does a comma in 55.5 work?
Yes. 55.5 × 20 / 100 gives 11.1.
Where are net carbohydrates alone?
On the net carbs card. There fibre is subtracted, with no GI.
Knowledge sources
Load is GI × carbohydrates / 100. This is not a diabetes meal plan.
Page updated in 2026.