Sentence Capitalizer
Sentence capitalizer supports sentence-case and word-initial capitalization modes for English emails, copy editing, and content proofreading.
Conversion Modes
Capitalizes the first letter of each sentence while keeping other characters unchanged.
Input Text
Converted Result
Statistics
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Input Chars
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Output Chars
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Input Lines
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Output Lines
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Changed Chars
Sentence Capitalizer Guide
Overview
Sentence Capitalizer quickly normalizes English letter case with sentence and word-level modes, helping you keep a consistent writing style before publishing or sending content.
Core Features
- Provides four capitalization modes for email, title, and paragraph formatting needs.
- Converts text in real time with instant output preview.
- Supports paste, copy, and download for workflow integration.
- Runs fully in the browser and does not upload source text.
Use Cases
- Unify sentence capitalization before sending English emails.
- Fix inconsistent case in marketing or publishing copy.
- Batch normalize support scripts and knowledge-base text.
- Standardize English fields before export or import.
How to Use
- Paste the target English text into the input area.
- Choose a conversion mode and review its behavior note.
- Check the converted output and statistics instantly.
- Copy or download the result for next processing steps.
FAQ
Will punctuation or numbers be changed?
No. The tool only changes letter case and keeps punctuation, numbers, and line breaks intact.
Does it support Chinese sentence capitalization?
This tool targets English letter casing. Chinese content remains unchanged.
Is my data uploaded to a server?
No. All conversion logic runs locally in your browser.