How big is 20 gallons?
It's about as big as a Car Gas Tank
The size of a Car Gas Tank is about 20 gallons.
(for 2009 Ford Taurus)
It's about one-and-three-tenths times as big as a Beer Keg
The size of a Beer Keg is about 15.50 gallons.
(Half barrel; maximum capacity)
It's about half as big as a Bathtub
The size of a Bathtub is about 42 gallons.
(a.k.a. bath, a.k.a. tub) (for Bootz Industries Aloha 5 ft. Left Hand Drain Soaking Tub)
It's about seven times as big as a Basketball (packed)
The size of a Basketball (packed) is about 2.93239924010 gallons.
(64% packing density) (NBA official ball standards, Size 7)
It's about nine times as big as a Bowling Ball (packed)
The size of a Bowling Ball (packed) is about 2.17502095550 gallons.
(64% packing density) (USBC specifications; tenpin)
It's about one-tenth as big as a Hot Tub
The size of a Hot Tub is about 190 gallons.
(for Lifesmart Rock Solid Simplicity Plug and Play 4 Person Spa With 12 Jets) (a.k.a. Spa, a.k.a. Jacuzzi, a.k.a. Whirlpool) (Advertised Capacity)
It's about ten-and-a-half times as big as a Basketball
The size of a Basketball is about 1.87673551360 gallons.
(NBA official ball standards, Size 7)
It's about fourteen-and-a-half times as big as a Bowling Ball
The size of a Bowling Ball is about 1.39201341150 gallons.
(USBC specifications; tenpin)
It's about twenty times as big as The Blood in a Human Body
The size of The Blood in a Human Body is about 1 gallons.
(for 70 kg body; average altitude; average)
It's about 40 times as big as a Human Stomach
The size of a Human Stomach is about 0.50 gallons.
It's about 45 times as big as an Ostrich Egg
The size of an Ostrich Egg is about 0.43110 gallons.
(Struthio camelus) (for common ostrich; average)
It's about 150 times as big as a STARBUCKS Venti Coffee
The size of a STARBUCKS Venti Coffee is about 0.160 gallons.
It's about one-one-hundred-fiftieth as big as a Concrete Mixer Truck
The size of a Concrete Mixer Truck is about 2,900 gallons.
(a.k.a. cement mixer, a.k.a. cement mixer truck, a.k.a. cement transport truck, a.k.a. concrete mixer, a.k.a. concrete transport truck, a.k.a. in-transit mixer)(standard size; drum capacity)
It's about 200 times as big as a Blood Donation
The size of a Blood Donation is about 0.10 gallons.
(American Red Cross donation volume)
It's about 250 times as big as a Baseball (packed)
The size of a Baseball (packed) is about 0.086836056 gallons.
(64% packing density) (MLB rules)