Free Reading Level Calculator
Convert between Lexile, Guided Reading, DRA, and AR levels — and find books that match. For parents, teachers, and homeschoolers.
Reading Level Systems Explained
Lexile
Developed by MetaMetrics. Measures text complexity from 0L (very early) to 2000L (advanced adult). Used by about 70% of US schools. A 1st grader typically reads at 200L–500L; a 5th grader at 700L–1000L.
Guided Reading (Fountas & Pinnell)
Uses letter levels A through Z. A is the simplest (one repeating word, picture support); Z is high school level. Most kindergarteners reach Level C–D by year-end; 2nd graders typically read at Level J–M.
DRA (Developmental Reading Assessment)
A numbered scale from A1 through 80. Used in many districts as the primary benchmark. A 1st grader typically lands at DRA 14–18; a 4th grader at 38–40.
AR (Accelerated Reader / ATOS)
Uses decimal grade equivalents (0.5–13.0). A 2.5 ATOS book is considered appropriate for a student halfway through 2nd grade. Used heavily in Renaissance Learning's reading programs.
Frequently Asked Questions
The conversions are approximations, not exact equivalents. Each system measures slightly different things — Lexile focuses on word frequency and sentence length, while Guided Reading considers content complexity, theme, and visual support. Use these as a guide, not a precise mapping. For an accurate level, your child needs an actual reading assessment from a teacher or testing service.
That's exactly why this tool exists. Enter the level you have, see the equivalents, and use whichever system the library or bookstore organizes by. The book recommendations below the conversion table give you a starting point — try a few of those titles and see which feel comfortable.
Level M (Guided Reading) is roughly equivalent to a Lexile of 500L–650L, DRA 24–28, ATOS 3.0, and is typical for late 2nd grade through mid-3rd grade. Use the converter above to see the full picture.
Many children read above grade level, especially in the early grades. Choose books based on the reading level plus age-appropriate content. A strong 2nd-grade reader might handle 4th-grade books in terms of decoding, but the themes might be too mature. Match both reading skill and content maturity.
Your child's teacher can provide one — most schools assess reading levels 2–3 times per year. Public libraries sometimes offer free Lexile-based assessments. For a paid option, services like Lexile.com, Reading A-Z, and Scholastic offer self-administered tests.