Welcome Guest. Sign in or Signup

2 Answers

CR3: L – kg conversion

Asked by: 9160 views Student Pilot



Although I can use Jeppesen CR3 calculator to easily convert gallons to pounds & vice-versa, I can see that it is not as simple when attepting to convert litres to kilograms.


Please NOTE; I have consulted the Jeppesen manual with no success and/or similar problem.


Could someone please advise what method(s), if any, can bring about the desired result?




Ben - Recreational Pilot

Ace Any FAA Written Test!
Actual FAA Questions / Free Lifetime Updates
The best explanations in the business
Fast, efficient study.
Pass Your Checkride With Confidence!
FAA Practical Test prep that reflects actual checkrides.
Any checkride: Airplane, Helicopter, Glider, etc.
Written and maintained by actual pilot examiners and master CFIs.
The World's Most Trusted eLogbook
Be Organized, Current, Professional, and Safe.
Highly customizable - for student pilots through pros.
Free Transition Service for users of other eLogs.
Our sincere thanks to pilots such as yourself who support AskACFI while helping themselves by using the awesome PC, Mac, iPhone/iPad, and Android aviation apps of our sponsors.

2 Answers

  1. Best Answer

    Jim Foley on Feb 22, 2012

    Although I cannot comment on the workings of the CR3, it is a simple calculation to do with any calculator, or just basic math.  AVGAS has a standard density of .721 kilograms per liter.  I’m assuming you are tryiing to find the weight of your fuel on board, so simple take .721 times the amount of fuel.  For example, take the standard 172R with about 200.6 liters.  200.6 times .721 equals 144.6 kg.

    +2 Votes Thumb up 2 Votes Thumb down 0 Votes

  2. Ben Jenkins on Feb 28, 2012

    Hi Jim,
    Thanks for the reply. The calculation you mentioned is quite straightforward, however I thought that perhaps a SG factor had been introduced into the CR3 for direct conversion, for such a factor obviously exists when directly converting b/w pounds>gallons & vice-versa.
    Could someone please shed some light on this?


    0 Votes Thumb up 0 Votes Thumb down 0 Votes

The following terms have been auto-detected the question above and any answers or discussion provided. Click on a term to see its definition from the Dauntless Aviation JargonBuster Glossary.

Answer Question

Our sincere thanks to all who contribute constructively to this forum in answering flight training questions. If you are a flight instructor or represent a flight school / FBO offering flight instruction, you are welcome to include links to your site and related contact information as it pertains to offering local flight instruction in a specific geographic area. Additionally, direct links to FAA and related official government sources of information are welcome. However we thank you for your understanding that links to other sites or text that may be construed as explicit or implicit advertising of other business, sites, or goods/services are not permitted even if such links nominally are relevant to the question asked.