Reference objects
Every number on this site comes from one of these, and each one has a source.
animals
- African elephant 12,000 lb
- blue whale 330,000 lb
buildings
- Empire State Building 1,454 ft
energy
- average US home 10,791 kWh
- Hoover Dam 4.2 billion kWh
- US data centers in 2023 176 TWh
nature
- Mount Everest 8,849 m
places
- American football field 48,000 ft² · 300 ft
water
- bathtub 70 gal
- Olympic swimming pool 1,250 m² · 3,125,000 L