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 |
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.
