Search for Similar Formulas My Google search for an Excel formula to convert number to words returned these results: User Defined Functions, such as Number2Words, NumberAsText, NumberToWords, NumsToWords, NumToWords, NUMWORD, spellCurrency, SPELLDOLLAR, SpellNumber, and SpellNumberEDP. Esoteric Built-in Formulas, such as those created by Jamil Mohammad, ndthanh, Peter Menhennet, and The FrankensTeam.