Literacy Arcade — ORF Fluency Calculator

One-click access to the Literacy Arcade Oral Reading Fluency Calculator: WCPM, accuracy, and Hasbrouck & Tindal norms.

Calculate oral reading fluency in seconds. The Literacy Arcade ORF Fluency Calculator gives teachers, tutors, and reading interventionists a fast, classroom-ready way to measure oral reading fluency. Click the toolbar button and the tool opens in a new tab — no setup, and no login required to use it. What you can do: - Calculate words correct per minute (WCPM) and reading accuracy - Use the built-in timer for live reads, or enter the time manually - Compare scores to Hasbrouck & Tindal Oral Reading Fluency Norms by grade and season - See an at-a-glance benchmark range (below / developing / strong) - Print a clean student report Built on the science of reading by a reading researcher with a Ph.D. in Reading Education, to support real classroom, intervention, and tutoring use. This extension is a quick launcher: it opens the calculator at literacyarcade.com, so you always get the newest version. It requests no permissions and collects no data. Learn more at https://literacyarcade.com