WSIP Guide for Estimating Editing Hours
In-depth editing (extensive grammar, spelling, and punctuation correction; organization and style revision; attention to overall clarity and cohesiveness): Approximately 4-8 typed, double-spaced, pages/hour. Estimation is based on 12-point Times New Roman or similar font.
This is an approximation intended only to help you determine how many hours of editing you may be expected to purchase. Editing may require significantly longer periods of time depending on quality, length, purpose, and type of writing.