Spache Readability Calculator
Calculate the Spache Readability score for grades 1-4 reading materials.
Spache Analysis
words, sentences, unfamiliar words
Spache Formula
Spache = 0.121(ASL) + 0.082(PDW) + 0.659
ASL = Average Sentence Length
PDW = Percentage of Difficult/Unfamiliar Words
When to Use Spache
The Spache formula is designed for primary grade materials (grades 1-4). For higher grade levels, use Dale-Chall or other readability formulas.
Spache Score
0
N/A
📚Grade Level
N/A
📊Unfamiliar Words
0%
📝Avg Sentence Length
✓Readability
Enter text to analyze
Target Audience
N/A
About Spache Readability
Developed by George Spache in 1953, this formula uses a list of 1,000+ familiar words that primary grade students typically know. Words outside this list are considered unfamiliar and contribute to higher difficulty scores.