Diet & food carbon footprint calculator

This is a **food carbon footprint calculator** (also called a **carbon calculator for food**): it estimates CO₂ from your diet pattern and wasted food using country-specific factors—not ingredient-by-ingredient grams.

Choose your diet type (or use days per week you eat meat for a quick match) and your estimated food waste %. We use country-specific factors and show daily and annual CO2, plus how many trees would absorb that in a year.