Learn how to write and say 15000 in words as Fifteen Thousand using the place value chart. Find out the properties, facts and problems of 15000 in numbers and words . 15000 in Words - Know how to write 15000 in English. Learn how to write the number 15000 in words at Careers360.com. When you convert a number into USD currency in words for check writing, this calculator rounds amounts to 2 decimal places. This calculator shows you how to write numbers in words on a check for US dollars. Writing a check is still a useful skill, even with the rise in digital touch-free transactions. Learn how to write 15000 in English words and in different currencies. The web page provides the spelling of 15000 in English as "fifteen thousand" and a list of currency names and their spellings.