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Less then..
Choose your input unit
lightbulb
cups-of-tea
laptop
mobile-charges
fridge
tv
heating
co2
apples
bananas
carrots
tomatoes
milk
beef
salmon
rice
shrimps
bread
beers
flight
flight-distance
train
underground
car
Choose your output unit
lightbulb
cups-of-tea
laptop
mobile-charges
fridge
tv
heating
co2
apples
bananas
carrots
tomatoes
milk
beef
salmon
rice
shrimps
bread
beers
flight
flight-distance
train
underground
car