Generators & RandomizersGenerators & Randomizers category page for tools

Generate random UUIDs (v4) or create UUIDs based on namespaces (v5). Copy with one click.

Generate placeholder text in various formats - paragraphs, sentences, or words. Perfect for mockups and prototypes.

Generate secure, random passwords with customizable length and character types.

Generate a list of unique or repeated random integers within a specified range.

Generate realistic mock data (names, emails, addresses) for testing and seeding databases.

Generate customizable QR codes for URLs, text, or any data. Download as PNG or SVG with custom colors.

Calculate percentages, increases, decreases, and percentage changes.

Convert between decimal numbers and Roman numerals (1-3999).

Convert numbers between binary, octal, decimal, and hexadecimal bases.

Calculate date differences, add/subtract days, and compute age from dates.