The cost of a translation is calculated in line with the number of words in the document. It is the most accurate and, therefore, widely used method to undertake a calculation. In general, the number of words is counted in the document to be translated (source document).
What is a word?
It is a string of characters between 2 spaces or apostrophes. A word may include 20 letters (e.g. internationalisation) or just one letter (e.g.: a). The words within a hyphened word count as a single word (e.g.: ready-to-wear).