Keyword Density Checker
Inspect repeated words and phrases in a draft.
Formula and assumptions
Tool · Count overlapping one-, two- and three-word sequences. Density (%) = occurrences ÷ total words × 100. Display the ten most frequent eligible sequences of each length.
Density is occurrences divided by all word positions. Optional English stop-word filtering removes phrases containing stop words. Use this diagnostic to investigate repetition, never as a ranking target.
This tool processes inputs in your browser. Calculator values are not stored or sent by this plugin.
Further reading: Unleash the Power of Keywords: A Comprehensive Guide to Mastering Keyword Research with Tools
Related tools: Word and Character Counter · Reading and Speaking Time Calculator
Page editor: Usman Arshad · Last edited: November 3, 2026
How to use this tool
Choose the relevant mode, enter Text to inspect and complete the labelled fields. Use Calculate to review your result.
Worked example
Text to inspect = Blue bird blue bird, Ignore case = 1, Exclude common English stop words = 0.
Total words = 4.00 · Unique words = 2.00 · Frequent words = blue: 2 (50.00%); bird: 2 (50.00%) · Two-word phrases = blue bird: 2 (50.00%); bird blue: 1 (25.00%) · Three-word phrases = blue bird blue: 1 (25.00%); bird blue bird: 1 (25.00%).
These example values are illustrative.
Interpreting the result
Inspect the sentences containing a repeated phrase before editing. Product names and technical terms may repeat legitimately, and synonym substitution can reduce clarity.
Assumptions and limitations
Density is occurrences divided by all word positions. Optional English stop-word filtering removes phrases containing stop words. Use this diagnostic to investigate repetition, never as a ranking target.
Is there an ideal keyword percentage?
No single percentage establishes quality. Inspect repetition in context and prioritize clear, useful writing.