Knapp Aviation Fuel Calculator
4.5star
62 reviews
5K+
Downloads
Everyone
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About this app
A fuel calculator for aviation. Calculate easily how much you need to refuel in kilograms, pounds, litres or gallons.
It's easy to use. Choose a fuel type and the measure used by the aircraft. Insert how much fuel you have at the moment and how much you want your aircraft to have (full tank, for example) and done. Get the needed values for refueling in all measure units.
It's easy to use. Choose a fuel type and the measure used by the aircraft. Insert how much fuel you have at the moment and how much you want your aircraft to have (full tank, for example) and done. Get the needed values for refueling in all measure units.
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Ratings and reviews
4.5
62 reviews
Jesse Mahan
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March 21, 2022
Great app, Love that I can make adjustments for fuel gravity. Would love to have the ability to divide for each wing or tank, to show how much per side for weight and balance. UPDATE: Yes this saves me time but having to pull up a calculator to figure out how much per wing is time consuming and figuring in my head has led to some miscalculations. Still I love the app just need it to figure amounts per wing or tank.
A Google user
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November 18, 2019
SG now works backwards. Shows 10 USG to be 51kg for example. So currently unusable. Otherwise would be nice. You could also add in possibility to give currwnt fuel and desired fuel in different units. This is needed when dipstick is in USG and calculqtions done in lbs for example.
Jean Knapp
July 7, 2021
I'm really sorry I took this long to resolve this. I didn't notice you updated your answer. There was a multiplication in the GAL code where there should be a division. I don't really use GAL, so I never noticed the mistake. If this still interests you, I'd ask you to test it to see if this solves your issue. Thanks for the feedback.
Brendan H
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August 30, 2021
This is a great app. I've gotten nearly the exact fuel quantity. Any way to add the SG for more accurate calc? Update... Now, works like a charm. Make refueling GA really simple. Kilo, to USG and vice versa. Great app!
Jean Knapp
July 7, 2021
Hi. I added support for specific gravity. I hope this works for you and I'll be glad if you can review this again if this still interests you. Thanks.
What's new
Simplified the layout and fixed a wrong conversion when using GAL (thanks Anttoni korpivaara)