Project Editor - Metrics: Character-based languages
The number of “words” is estimated by dividing the number of characters by a factor. These factors are set on the Configuration > Settings > Translation > Metrics.
The number of characters in each segment is divided by the relevant factor. It is then rounded up to the nearest integer to give the number of words in the segment. The number of words in each segment is summed up to give the total word count in the document.
A typical metrics window