Find and Replace Text

Find and Replace Text

Local Processing

Find target words or substrings and replace them with new text throughout a document.

How It Works & Processing Standards

Find target words or substrings and replace them with new text throughout a document.

Tool processing runs in your browser. If you create a calculator or conversion share link, its values are included in the URL. See the privacy policy for account, analytics and advertising data.

Current Limits

  • Maximum input length: 2,000,000 characters

Choose plain find & replace, case-insensitive or regex under "Task". Plain replacement also reports how many were replaced.

What You Can Do

Find & replace
Finds the exact string and replaces every occurrence.
Ignore case
Matches Apple, apple and APPLE alike.
Regex
Finds by pattern and flags (g, i, m, s) and replaces using capture groups such as $1.

How to Use Find and Replace Text

  1. 1
    Choose a taskPlain replacement for exact text, regex for patterns.
  2. 2
    Enter find and replaceLeave the replacement empty to delete what is found.
  3. 3
    CopyCopy the updated text.

Examples

Update a year everywhere
Input: 2025 → 2026 in "2025년 계획, 2025년 예산"
Result: 2026년 계획, 2026년 예산 (2 replacements)
Regex capture group
Input: 주문번호 A123, B456 / pattern [A-Z](\d+) → #$1
Result: 주문번호 #123, #456

Common Use Cases

  • Updating names, dates or version numbers throughout a document
  • Reformatting logs or data with a regex
  • Deleting a word (empty replacement)

Frequently Asked Questions (FAQ)

What does the g flag do?

Global — replace every match. Without it only the first match changes. i means ignore case.

How do I find a literal dot or bracket?

Plain replacement treats them literally. In a regex, escape them with a backslash, like \.

Have feedback or ideas for this tool? Suggest & Inquire →