Utilities Tools

General-purpose generators and converters for developers.

8 tools2 popular

Most Loved

Generate, batch-create, and validate UUIDs (v4) instantly.

Generate strong, random passwords with customizable length and character rules.

Generate strong, random passwords with customizable length and character rules.

Generate, batch-create, and validate UUIDs (v4) instantly.

Build cron expressions visually and see the next scheduled run times.

Roll virtual dice with customizable sides and quantity.

Generate QR codes from text or URLs with custom size and download as PNG.

Generate random numbers within any range with optional set size.

Pick a random item from a list of options fairly.

Generate random strings, tokens, and API keys with configurable format.

Learn what UUIDs are, the different versions (v1, v4, v7), and when to use them in databases, APIs, and distributed systems.

Learn cron expression syntax for scheduling tasks. Understand fields, special characters, and common patterns with examples.

Learn how to create strong passwords, understand entropy, hashing algorithms, and best practices for password security.

Understand cryptographic hash functions. MD5, SHA-256, HMAC, and when to use each for integrity, passwords, and signatures.

Understand random number generation, cryptographic randomness, probability, dice math, and entropy for developers.

Learn how QR codes work, error correction levels, data capacity, and best practices for favicons and visual data encoding.

What are utilities tools?

General-purpose generators and converters for developers.

How many utilities tools do you have?

We've got 8 free utilities tools including Password Generator, UUID Generator, Cron Expression Generator, and more. All free to use!

What are the most popular utilities tools?

The most popular tools in this category are Password Generator, UUID Generator.

Do I need to make an account?

Nope! Everything on BuildUtilities is free and works without signing up.