Middle grade is the least documented category in this whole topic. One source gives a figure, it covers children's fiction and young adult together, and its publisher explicitly calls it a suggestion.
The detailed by-age tables you will find elsewhere, splitting younger middle grade from upper middle grade with tidy ranges for each, come from no publisher, agency or professional body I could reach.
The One Source
Chicken House asks its competition entrants for:
"A completed full-length novel (approx. 30,000- 80,000 words) for children or young adults."
Their FAQ then removes most of its force:
"Yes, the word count limits are only suggestions based on our experience of novels for children aged 7+ up to (and including) YA. We are happy to consider shorter and longer submissions."
Note the span: aged 7 and up through YA, in a single range. That covers early chapter books, middle grade and young adult at once, which tells you the publisher is not treating length as a category boundary.
Underneath sits the general definition, that a novel is 40,000 words or more, though for middle grade that floor is not a useful guide since plenty of published middle grade sits below it.
Why There Is Nothing Else
SCBWI's guidance is paywalled. The Society of Children's Book Writers and Illustrators is the natural authority, and its Essential Guide to Publishing for Children requires premium membership. The public FAQ has no word counts. I will not relay second-hand versions of paywalled material.
The relevant award refuses to set a length. The Andre Norton Award covers "Middle grade or young adult science fiction or fantasy (or related genre) books of any length."
The publishers are unreachable. Nosy Crow, Andersen, Usborne, Templar, Little Tiger, Guppy and David Fickling all returned errors or publish nothing on length. Barrington Stoke, which specialises in shorter and accessible children's books and would be an excellent source, redirects into a retail site.
What Actually Defines Middle Grade
Since length does not, the category is defined by other things:
Reader age, roughly 8 to 12, and protagonist age typically at the upper end of that.
Content and interiority. Middle grade addresses a reader's widening world rather than the interior and romantic concerns of YA. That difference, rather than word count, is what an editor is judging.
Reading level and sentence complexity, which matter more here than in any adult category and are not measured in words.
Length follows from those. A book for a confident twelve-year-old is longer than one for a seven-year-old because of what it is doing, not because of a target.
The Practical Route
With no published guidance, the shelf is the evidence. Take four or five middle grade novels aimed at your reader's age, check their page counts, and estimate. That is a better basis than any range on any website, including this page.
One measurable consideration: for print, a short book has real production consequences. Below about 80 pages KDP prints no spine text at all, and children's books are heavily dependent on library and school shelving where the spine is what a reader sees. A smaller trim size raises the page count and fixes it.
What Deckle Does
The word count in Compile is the manuscript figure for submissions and competitions.
The estimated page count is the more relevant number for this category, because middle grade is overwhelmingly a print market and page count drives trim size, spine width and shelf presence.
If a project is illustrated, note that images affect page count substantially and that image preparation is a separate consideration from text length.
Common Mistakes
- Citing a by-age word count table. No authority publishes one.
- Applying the 40,000 word novel floor. Plenty of published middle grade sits below it.
- Defining the category by length. Reader age, content and reading level define it.
- Repeating SCBWI figures from elsewhere. Their guide is members-only and second-hand versions are unverifiable.
- Ignoring the spine. A short book in a library market needs a readable spine.
FAQ
Q: How long should a middle grade novel be? A: No authority publishes a figure. The one available range covers children's and YA together and is called a suggestion.
Q: Where do the by-age tables come from? A: No publisher, agency or body I could reach. They appear only on excluded source types.
Q: Does SCBWI publish word counts? A: Only to premium members. Nothing is public.
Q: Is middle grade shorter than YA? A: Generally, but no source quantifies the difference, and the categories are defined by readership rather than length.
Q: How do I estimate a target? A: Check the page counts of four or five books aimed at the same reader and work back.