Rule of thumb for calculating required fuel?

I’m looking for a calculation which isn’t a website, something I can write down and do it without internet.

Any rules of thumb for this? Thanks!

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You’d need this information!


Thank you! 😊

And this as well:


Thank you!

This is the one I guess:

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Thank you very much!

This seems to work well:

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Wow, thanks for all the replies!

And this one! :)
Specifically this part: “Am going to start to be a bit more scientific by setting my fuel weight at start to a reserved amount ( 1.5 hrs burn) plus expected length of flight + 10%.”.

This is how I’m going to try it. :)


Lol, I love the IF community for many reasons, but this is one of the top. There’s no shortage of members willing to help out.

I’m not sure how accurate it is but I sometimes use this:

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Thanks for the great answers everyone!

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