Winds aloft for optimum cruise speed at altitude?

Is there a way know this so I can choose the best altitude for cruise?

/Thank you,
Mike

You can use windy.com to check winds at certain flight levels. Hope this helps!

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windy.com gives you the winds at every altitude.

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Hey Mike!

The optimum cruise altitude is not necessarily related to your speed, but rather your weight. The heavier you are, the lower your (initial) cruising altitude will be. I suggest you use a third-party service like SimBrief or FPLtoIF, as they will calculate the optimum cruise altitude for you.

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