Excel formula vs Excel formulae

[uktous]

Hi,

Question:
Should I us formula or formulae?

Sentence:
I am proficient in Excel formula / formulae.

Thanks

[Raymott]

Hi,

Question:
Should I us formula or formulae?

Sentence:
I am proficient in Excel formula / formulae.

Thanks

Surely it would depend on whether you're referring to a singular formula or plural formulae.
If that's too confusing, you could use formulas as the plural. The context suggests that you mean the plural since being proficient in one Excel formula is barely worth writing about.

Formula - Definition and More from the Free Merriam-Webster Dictionary