What the Numbers Mean

With the defaults (1 meatless day/week for 1 person over 52 weeks), that's 52 meatless days: 0.47 tons of CO₂ avoided (1,040 lbs), along with 57,200 gallons of water, 2,080 lbs of grain, and 1,560 sq ft of forest. Scale the days or people up and the impact compounds quickly.

Where the Numbers Come From

Per meatless day this calculator credits about 1,100 gallons of water, 40 lbs of grain, 30 sq ft of land, and 20 lbs of CO₂e — USDA and EPA averages for replacing an average meat-centric day with plant-based foods. Beef and lamb dominate these figures, so heavier meat diets see larger savings.