Nutrition & nutritional science
Calculation method and formula
(GI food 1 × Carbs 1 [g] + GI food 2 × Carbs 2 [g] + GI food 3 × Carbs 3 [g]) ÷ (Carbs 1 [g] + Carbs 2 [g] + Carbs 3 [g])
Understand the inputs
- GI food 1
- Minimum 0. Maximum 100. Use a measured value or your own assumption.
- Carbs 1
- Unit: g. Minimum 0. Use a measured value or your own assumption.
- GI food 2
- Minimum 0. Maximum 100. Use a measured value or your own assumption.
- Carbs 2
- Unit: g. Minimum 0. Use a measured value or your own assumption.
- GI food 3
- Minimum 0. Maximum 100. Use a measured value or your own assumption.
- Carbs 3
- Unit: g. Minimum 0. Use a measured value or your own assumption.
Assumptions and limitations
This is a mathematical estimate from GI and available carbohydrate. It does not reliably predict effects of preparation, mixed meals or personal glucose responses.
The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.