Free publishing tool
Measure your book before you upload it to KDP
Use this book measurements tool to confirm the interior PDF dimensions, identify a likely paperback trim size, and catch inconsistent pages before opening the file in Amazon KDP.
What the book measurement checker reports
- Measured width and height for each interior page.
- Likely KDP trim-size match, including common bleed dimensions.
- Whether every page uses the same dimensions.
- Page count and a broad paperback-range check.
What it does not measure
- Cover wrap, spine width, margins, fonts, image resolution, or actual artwork bleed.
- Amazon acceptance or compliance with every current print option.
For a fuller checklist, read the KDP interior PDF checker guide. A passing measurement is a useful file check, but you should still review the final interior and cover in KDP Print Previewer.
Book measurements FAQ
- What does the book measurements tool check?
- It measures the first page of an interior PDF, checks whether all pages use a consistent size, compares the dimensions with common KDP paperback trims, and reports the page count.
- Can I measure a book PDF without uploading it?
- Yes. The checker reads your selected PDF in your browser and does not upload the file to KDP Maker's server.
- Does this check the book cover too?
- No. This tool measures interior PDFs. Check the full cover wrap, spine, barcode area, bleed, and final package separately in KDP Print Previewer.