For other uses, see Flea (disambiguation). Fleas are small flightless insects that form the order Siphonaptera. As external parasites of mammals and birds, they live by consuming the blood of their hosts. Adults are up to about 3 mm (0.12 in) long and usually brown.
Numbeo allows you to calculate gas prices and gas consumption using information about: 1  fuel efficiency (car consumption for 100km or miles per gallon). 2  distance you are planning to travel (or cities which you intend to visit on your journey).y using car consumption and travel distance, our tool shows you approximately how much gasoline (petrol) your car will consume, an approximate price and also estimates how much will your car depreciate during that trip.
You can calculate your cost in your own unit system and currency, just type the numbers and the values will be calculated automatically. 1  Distance (km-mi) 2  Speed (km-mi/h) 3  Driving time. 4  Fuel (l-gal/100km-mi) 5  Overall fuel consumed (l-gal) 6  Fuel price. 7  Overall trip price.