Online Readability Test Calculator

Find readability score of your text. Enter text or upload text file and click on check button to get readability score of your text

Flesch Kincaid Grade Level	-
Flesch Kincaid Reading Ease	-
Lexile Measure	-
New Dale-Chall Score	-
Spache Readability Score	-
SMOG Index	-
Coleman-Liau Index	-
Gunning-Fog Score	-
Automated Readability Index	-
Linsear Write	-
Powers Sumner Kearl	-
Lix	-
Rix	-
FORCAST Grade	-
CEFR Level	-
IELTS Level	-
Standard	-
Median Score	-

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Readability Formulas Test Calculator

Check Readability Score for text document using the calculator to know what grade level is your writing/reading.

Check Reading/Writing Levels & Grades

After calculating score in above tool, you can convert the result in grade using the tables below.

Automated Readability Index

Score	School Level	Age
1	Kindergarten	5-6
2	1st & 2nd Grade	6-7
3	3rd Grade	7-9
4	4th Grade	9-10
5	5th Grade	10-11
6	6th Grade	11-12
7	7th Grade	12-13
8	8th Grade	13-14
9	9th Grade	14-15
10	10th Grade	15-16
11	11th Grade	16-17
12	12th Grade	17-18
13	College Student	18-24
14	Professor	24+

Coleman-Liau Index

Index Score	School Level	Comprehension
5 & below	5th Grade and below	Very easy to read
6	6th Grade	Easy to read
7	7th Grade	Fairly easy to read
7-10	8th, 9th & 10th Grade	Conversational English
11-12	11th & 12th Grade	Fairly difficult to read
13-16	College	Difficult to read
17+	Professional	Extremely difficult to read

Flesch-Kincaid Grade Level

Score	School Level	Comprehension
5.0-5.9	5th Grade	Very easy to read
6.0-6.9	6th Grade	Easy to read
7.0-7.9	7th Grade	Fairly easy to read
8.0-9.9	8th & 9th Grade	Conversational English
10.0-12.9	10th , 11th & 12th Grade	Fairly difficult to read
13.0-15.9	College	Difficult to read
16.0-17.9	College Graduate	Very difficult to read
18.0+	Professional	Extremely difficult to read

Flesch-Kincaid Reading Ease

Score	School Level	Comprehension
100.0-90.0	5th Grade	Very easy to read
90.0-80.0	6th Grade	Easy to read
80.0-70.0	7th Grade	Fairly easy to read
70.0-60.0	8th & 9th Grade	Conversational English
60.0-50.0	10th , 11th & 12th Grade	Fairly difficult to read
50.0-30.0	College	Difficult to read
30.0-10.0	College Graduate	Very difficult to read
10.0-0.0	Professional	Extremely difficult to read

Lexile Measure

Lexile Range	Grade Level	Reader Level
BR - 0L to -400L	Below Grade 1	Beginning Reader
200L - 400L	Grades 1-2	Early reader
400L - 600L	Grades 3-4	Developing reader
600L - 800L	Grades 5-6	Intermediate reader
800L - 1000L	Grades 7-8	Proficient reader
1000L - 1200L	Grades 9-10	Advanced reader
1200L - 1400L	Grades 11-12	College-ready
1400L+	College/Career	Professional

Note: Our Lexile calculator provides an approximation. The Lexile Framework is a registered trademark of MetaMetrics, Inc.

Gunning-Fog Score

FOG Score	School Level	Comprehension
0-5	5th Grade and below	Very easy to read
6	6th Grade	Easy to read
7	7th Grade	Fairly easy to read
8	8th Grade	Conversational English
9-12	9th & 12th Grade	Fairly difficult to read
13-16	College	Difficult to read
17	College Graduate	Very difficult to read
18-20	Professional	Extremely difficult to read

New Dale-Chall Score

New Dale-Chall Score	School Level	Comprehension
4.9 or lower	4th Grade and below	Very easy to read
5.0-5.9	5th & 6th Grade	Easy to read
6.0-6.9	7th & 8th Grade	Conversational English
7.0-7.9	9th & 10th Grade	Conversational English
8.0-8.9	11th & 12th Grade	Fairly difficult to read
9.0-9.9	College	Difficult to read
10.0+	College Graduate	Very difficult to read

Raygor-Estimate & Fry Graph

Plotted Dot shows the estimate grade level.

SMOG Index

Total Number of Polysyllabic Words	School Level	Comprehension
0-2	4th Grade	Very easy to read
3-6	5th Grade	Very easy to read
7-12	6th Grade	Easy to read
13-20	7th Grade	Fairly easy to read
21-42	8th & 9th Grade	Conversational English
43-56	10th Grade	Fairly difficult to read
57-72	11th Grade	Fairly difficult to read
73-90	12th Grade	Fairly difficult to read
91-110	College Freshman	Difficult to read
111-132	College Sophomore	Difficult to read
133-156	College Junior	Difficult to read
157-182	College Senior	Difficult to read
183-210	College Graduate	Very difficult to read
211+	Professional	Extremely difficult to read

Spache Readability Score

Spache Readability Index Level outputs the US Grade Level. So you want to aim for a score of 3 or below.

Linsear Write

Lower the score, easier to read. Score is based on polysyllable words and sentence length. Use shorter sentences and words with less syllables to lower the score or longer sentences with complex words to raise the score.

Rix Score

Lower the score, more readable by lower grade levels.

Powers Sumner Kearl

Powers Sumner Kearl is a recalibration of the Flesch Reading Ease formula, designed specifically for children aged 7-10 (grades 2-4). Lower scores indicate easier readability. The score directly represents a U.S. grade level.

Score Range	Grade Level	Reading Level
Below 2	Pre-K to 1st Grade	Very easy
2.0-3.0	2nd-3rd Grade	Easy
3.0-4.0	3rd-4th Grade	Moderate
4.0-5.0	4th-5th Grade	Fairly difficult
5.0+	5th Grade and above	Difficult for target age

LIX (Läsbarhetsindex)

LIX is a Swedish readability measure that works well across languages because it doesn't rely on syllable counting. It's calculated based on average sentence length and percentage of long words (more than 6 letters).

LIX Score	Reading Level	Typical Content
Below 25	Very easy	Children's books
25-34	Easy	Fiction, popular magazines
35-44	Medium	Normal text, newspapers
45-54	Difficult	Official texts, professional literature
55+	Very difficult	Academic texts, research papers

FORCAST Grade

FORCAST is designed specifically for technical documents, training manuals, and forms—not narrative text. It only counts single-syllable words and ignores sentence length, making it ideal for technical writing. The score represents a U.S. grade level and cannot assess below grade 5.

FORCAST Score	Grade Level	Reading Level
5-6	Elementary School	Very easy technical content
7-8	Middle School	Easy technical content
9-10	High School	Moderate technical content (Recommended)
11-12	Late High School	Fairly difficult technical content
13-14	College Freshman/Sophomore	Difficult technical content
15-16	College Junior/Senior	Very difficult technical content

Note: For most technical writing, a FORCAST grade of 9-10 is recommended.

CEFR Level

The Common European Framework of Reference for Languages (CEFR) is an international standard for describing language proficiency. Our mapping converts grade levels to approximate CEFR levels.

CEFR Level	Description	Approximate Grade Level
Pre-A1	Pre-beginner	Below Grade 1
A1	Beginner	Grades 1-2
A2	Elementary	Grades 3-4
B1	Intermediate	Grades 5-6
B2	Upper Intermediate	Grades 7-9
C1	Advanced	Grades 10-12
C2	Proficient	College/University

Note: CEFR is designed for language learners, while readability measures text complexity. This mapping is approximate.

IELTS Level

The International English Language Testing System (IELTS) measures English language proficiency. Our mapping converts grade levels to approximate IELTS band scores.

IELTS Band	Description	Approximate Grade Level
3-4	Limited user	Below Grade 4
4-5	Limited to Modest user	Grades 4-5
5-6	Modest to Competent user	Grades 5-6
6-7	Competent to Good user	Grades 6-8
7-8	Good to Very good user	Grades 8-10
8-9	Very good to Expert user	Grades 10-12
9	Expert user	College/University

Note: IELTS tests overall language proficiency, not just reading comprehension. This mapping is approximate.