Free tools for self-publishing authors
No sign-up, calculated in your browser, based on KDP's official standards.
KDP spine and cover calculator
Spine width and flat cover size, by trim size, paper and page count.
KDP margins
The minimum margins by page count, and the ones we recommend.
Word counter and translation quote
Paste your text or upload a file: words, pages, reading time and price.
Words to pages
How many pages your paperback will run, by trim size and font.