A normal page (NP) is made up of 1800 keystrokes e.g. a page on which there are 30 lines of 60 characters. Of course the text is commonly formatted otherwise (thicker text, thinner text), so in order to determine the actual amount of text - thus the number of normal pages – a sample calculation is made (in the text editor (Word) under Tools is Word Count - which gives us statistics including the number of Characters (with spaces), this figure is divided by 1800 – whereby giving the number of normal pages.
We use a macro to make this calculation which is used in all premier Czech agencies.
The definition of a normal page is given in Regulation No. 77/1993 Coll. § 24 paragraph 2
Definition = 1 NP = 1800 keystrokes
Number of keystrokes: Number of characters + number of words + number of paragraphs
calculation = 1 NP = number of keystrokes : 1800
Several agencies use a different calculation which gives a very similar result: 1 NP = 1 500 Characters (no spaces)
Note: Number of normal pages in the resulting text (translation) is usually approximately 20 % higher.
1 NP represents on average 60-120 minutes of work.