8.06 quintillion liters, or
2.129 quintillion gallons, of water, is used each year for meat worldwide.
30% of Earth's land mass is used for these animals.
How I got There
20,029 liters (5,291 gallons) of water is used to produce only one kilogram (2.2 pounds) of meat. After doing some research and math I've come up with the conclusion that
402,564,650,860 kg of meat is produced each year worldwide. Times that by 20,028 liters per kg and
8,062,564,800,000,000 (8.06 quintillion) liters, or 2,129,904,290,486,564 (2.129 quintillion) gallons, of water is used each year for meat worldwide.
30% of all of Earth's land mass is used for farm animals (about
80% of all agricultural land), that includes grazing and land used to grow feed crops. Totaling the land used for farm animals upkeep to
95,063,950 kilometers (or for US peoples, 59,070,000 miles).
My math only takes into account common farm animals and an average meat production. This doesn't take into account the chickens up kept for eggs, though they're usually the same chickens that get slaughtered.
World as Vegans:
If you would like to know, meals for a vegan only takes 1136 liters (300 gallons) per day. If there are 7.5 billion people in the world, if everyone was vegan then the total water consumption for food production per year would be
3,109,800,000,000,000 (3.1 quintillion) liters or 821,522,248,423,369 (821.5 quadrillion) gallons per year!
Also, you should keep in mind that animals are responsible for 18% of the world greenhouse gasses; that's more than all of Earth vehicles combined.
List of Total Meat
Pounds of meat per common farm animal total worldwide:
- Chickens: 6,693,208,760 kilograms of meat per year.
- Pigs: 63,815,002,100 kilograms of meat per year.
- Cows: 332,056,440,000 kilograms of meat per year.