Find Duplicate Letters
Free online duplicate letter finder. Identify all letters that appear more than once in any text.
About This Free Online Find Duplicate Letters
Our free duplicate letter finder scans your text and lists the letters that appear more than once, showing you which characters repeat and how often. Type or paste your text and the tool identifies the repeated letters instantly, which is useful for word games and puzzles, analyzing letter composition, checking constrained writing, and classroom activities about the alphabet. Seeing only the duplicated letters makes patterns easy to spot, the opposite view to finding letters that appear just once. You can copy the result with a single click. The whole process runs in your browser and updates the instant you type, so it is immediate, free, requires no signup, and nothing you enter is ever sent to a server.
Features of Our Find Duplicate Letters
- Find all duplicate letters in text
- Frequency table with count and percentage
- Inline highlight of duplicate letters
- Case-sensitive toggle
- Exclude single occurrences option
How to Use the Find Duplicate Letters
The Find Duplicate Letters works right in your browser — no signup, no installation. Follow these steps:
- Paste or type text to analyze for duplicate letters.
- Toggle case sensitivity and other options.
- View the frequency table and inline highlights.
- Copy the analysis or results.
Frequently Asked Questions About Find Duplicate Letters
What counts as a duplicate letter?
A letter is considered a duplicate if it appears more than once in the text. Single-occurrence letters can be excluded from results.
Does this include numbers and symbols?
No. Only letters (A-Z, a-z) are analyzed. Use character-frequency-counter for full character analysis.
Why Choose the Find Duplicate Letters?
Good analysis needs to be both fast and private. The Find Duplicate Letters processes your text locally and shows results as you work, so you can iterate on drafts and data freely, knowing the content is never transmitted or stored.