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Flight Level & Altitude
Convert FL350 to feet, reverse to flight level, or switch feet ↔ meters for runway and obstacle charts. ISA temperature is shown for the corresponding altitude.
FL ↔ feet FAQs
Common questions about flight level & altitude.
How do I convert FL350 to feet?
Multiply the flight level by 100: FL350 = 35,000 feet (on standard pressure).
When is flight level not equal to altitude?
When local QNH differs from standard, indicated altitude and flight level diverge. Always follow the local transition altitude/level.