Fahrenhayt or Fahrenheit: How To spell?

The word Fahrenhayt is misspelled against Fahrenheit, a noun meaning "The Fahrenheit termometer or scale."

Word contains consecutive vowels 'EI' in between alphabets fahrenh & t is misspelled as 'AY'
Wrong Spelling:  fahrenh-ay-t 
Correct Spelling:  fahrenh-ei-t 
Explore spell check of Fahrenheit to spell without errors.