We have a great tool to help you convert the number to words in US English. You can use this tool to save currency and check spelling writing. You can quickly turn any amount of digits into words and vice versa. You don't need to make extra efforts of downloading software or anything, all you have to do is type on the left side, and the result would be on the right side. You get an instant result for Numbers to words.
There are some rules to be followed when writing like when to use figures and when to use spellings. We mostly use spellings when we want to do academic writing or finance procedures or wherever it is necessary to inform precise figure. Also, the number of words do not have any particular rules to write. Some say you should write names for one to hundred while others say we should use only as own to ten. Whenever you write a number of words, you find a slight variation in spelling with American English and British English. In American English, we use a comma to separate hundreds, millions, thousands that are substantial figures of spellings. We also use a hyphen in American English to separate compound figures. Like if we wish to write 21, 89 we would write it as twenty-one, eighty-nine, and so on. Numerals from 21 to 99 are considered to use a hyphen when written from number to words.
Some languages do not emphasize much on the numeral units. Earlier Piraha People always calculated their amount with either "more" and "few" rather than a particular digit. Even in standard dictionary till the 1400s there was no space for billion or trillion.
Spelling is always a great confusion for many of us. We are very much aware of the numbers we deal with, but we are never sure about its spellings. Let us understand these figures little profoundly.