There is no single answer to how long it takes to edit a book, and anyone who gives you one without asking about your manuscript is guessing. What you can do is understand what drives the timeline, plan the stages in the right order, and get dates in writing before you commit.
What makes editing take longer
Three things control most of the schedule. Length comes first: a longer manuscript simply takes more reading time. The type of edit comes second: a developmental edit asks the editor to think hard about the whole book, while a proofread is a faster, narrower check. The condition of the text comes third: a draft that needs correction on nearly every line takes longer than a well-revised one.
A fourth factor is easy to forget: the editor's own schedule. Good editors book ahead, so the time before work starts can be as long as the work itself.
The stages and why order matters
Editing is a sequence, and each stage waits for the one before it. A developmental edit comes first, then you revise. A copy edit follows once the structure is settled. A proofread comes last, after the book has been laid out, because typesetting can introduce new errors.
That means the whole journey is longer than any single stage, and a large part of it is the time you spend revising between stages. Plan for it. Rushing the revision to keep to a date usually costs more later.
Your part of the timeline
Delays on the author's side stretch a schedule more than anything else. Answer questions promptly, send the final version of your file before work begins rather than during it, and decide in advance who approves changes. Sending a new draft halfway through an edit means the editor is working on text that no longer exists.
What to ask for in writing
Before you commit, ask for dates, not estimates.
- The start date and the delivery date for each stage.
- What happens to the date if you send a revised file.
- How long the editor takes to answer questions after delivery, and how many rounds are included.
- Whether a short deadline changes the price.
How this works at Marlowe
Each package on a Marlowe service page shows its delivery time, and the order form shows it again before you pay, so you are never guessing. Marlowe assigns a specialist after payment and manages the work to delivery. If you want to see how an editor handles your writing first, a free sample edit of the first 1,000 words comes back within two business days.