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PPL Buddy
Ground School

Section 18 of 18

Quick reference card

Quantity Conversion
Distance 1 nm = 1.852 km = 1.15 statute miles
Latitude 1 minute of latitude = 1 nm (longitude does not, except at the Equator)
Length 1 m ≈ 3.28 ft; 1000 ft ≈ 305 m
Fuel volume 1 imp gal ≈ 4.55 L; 1 US gal ≈ 3.78 L; imp gal ≈ 1.2 US gal
Fuel volume roughly 4 L per gallon (US or imp); about 1/4 gallon per litre
Fuel mass mass = volume × SG; Avgas SG ≈ 0.72 kg/L (range 0.68 to 0.74)
Weight 1 kg ≈ 2.2 lb
Speed/time groundspeed in kt = nm per hour; 1 nm at 60 kt = 1 minute

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