Unit Converter & Drill
Convert nautical miles, kilometres, feet, kilograms, litres, gallons and hectopascals, then test yourself with a drill
Rule of thumb
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Practise the questions
Units & Conversions133 questionsRevise with flashcards
Units & Conversions18 cardsWhat to try
- Pick a pair such as NM and km, type a value on either side, and read the answer off the two-scale ruler.
- Try the fuel pair with different densities to see why litres and kilograms are not the same thing.
- Open the Drill tab. Exact mode needs the right answer to within 0.6 per cent. Mental mode accepts a rough answer within 6 per cent.
- Remember the shortcuts: 1 NM is about 1.85 km, 1 kg is about 2.2 lb, 1 US gallon is about 3.8 L.
Exam point
Most fuel errors come from mixing units. Always write the unit with the number, and check whether the fuel figure is in litres, kilograms or pounds before you add or compare.
Study aid only. Figures here are simplified and fictional, so always use current DGCA and ICAO documents and the approved manual for real operations.