String Calculator

String Operations Guide

The String Calculator provides a comprehensive set of string manipulation operations to help developers and content creators work with text efficiently.

Available Operations

1. String Length

Calculate the number of characters in your string. Useful for validating input lengths, checking character limits, and analyzing text size.

2. Substring Extract

Extract a portion of a string by specifying start and end positions. Perfect for parsing data, extracting specific sections, or implementing text previews.

• Start position: 0-based index where extraction begins
• End position: Where extraction ends (-1 for end of string)

3. Find & Replace

Search for text and replace it with new content. Supports both simple text replacement and powerful regex patterns.

• Simple mode: Replace all occurrences of exact text
• Regex mode: Use regular expressions for advanced pattern matching
• Flags: Control regex behavior (g=global, i=case insensitive, m=multiline)

4. String Compare

Compare two strings to check if they are equal. The tool performs both exact matching and case-insensitive comparison.

5. Character at Position

Get the character at a specific position (0-based index). Displays the character along with its Unicode value and hexadecimal representation.

6. Pad String

Add padding characters to reach a target length. Useful for formatting fixed-width output, aligning text, or creating visual separators.

• Pad Start: Add characters to the beginning (left padding)
• Pad End: Add characters to the end (right padding)

7. Repeat String

Duplicate a string multiple times. Great for creating patterns, generating test data, or building decorative elements (maximum 1000 repetitions).

8. Truncate

Shorten a string to a maximum length. Optionally add an ellipsis (...) to indicate truncation. Perfect for creating previews, summaries, or fitting text into limited space.

9. Reverse String

Reverse the order of characters in a string. Properly handles Unicode characters and emojis.

Use Cases

• Development: Test string methods, validate input, debug text processing
• Data Parsing: Extract specific parts from structured text
• Content Editing: Batch find-replace operations with regex
• Formatting: Align text, create fixed-width output, generate patterns
• Validation: Check string lengths, compare values, inspect characters

Tips

• Use substring with -1 as the end position to extract from a position to the end
• Regex flags: g for global (all matches), i for case-insensitive, m for multiline
• When padding, use space " " for invisible padding or any character for visible padding
• Truncation with ellipsis reserves 3 characters for the "..."
• Character position is 0-based (first character is at position 0)