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CalcHive

Generators

Generate UUIDs, passwords, random strings, lorem ipsum, QR codes, and more.

10 free tools available

Quickly generate passwords, UUIDs, placeholder text, hashes, and other data you need during development and testing. Our free online generator tools save you time by producing properly formatted output instantly, right in your browser. Whether you need a cryptographically strong password, a batch of UUIDs for database records, or Lorem Ipsum text for a design mockup, you will find the right tool here.

These generators are built for developers, designers, testers, and system administrators who need reliable output without installing additional software. All generation happens locally in your browser using secure, well-tested algorithms. The results are never logged or transmitted, ensuring complete privacy. Choose from a variety of customization options to get exactly the output format you need for your project.

UUID Generator
Popular
Generate random UUID v4 identifiers
Nano ID Generator
Generate compact, URL-friendly unique IDs
Password Generator
Popular
Generate secure random passwords
Lorem Ipsum Generator
Generate placeholder text
Random Number Generator
NewPopular
Generate random numbers in any range
Coin Flip Simulator
New
Flip a virtual coin - heads or tails
Dice Roller
New
Roll virtual dice for games and RPGs
JWT Builder & Signer
New
Build and sign JWT tokens visually
Random String Generator
Generate random strings and tokens
QR Code Generator
Popular
Generate QR codes from text or URLs

Frequently Asked Questions

Are the generated values truly random?▾
Our generators use the Web Crypto API (crypto.getRandomValues) when cryptographic randomness is required, such as for password generation. This provides cryptographically secure random values suitable for security-sensitive applications. For non-security use cases like generating Lorem Ipsum text or sample data, standard pseudo-random algorithms are used.
Can I customize the output of these generators?▾
Yes. Most generators offer customization options such as length, character sets, quantity, and format. For example, the password generator lets you specify length and choose which character types to include (uppercase, lowercase, numbers, symbols). UUID generators let you select between different UUID versions.
Is it safe to generate passwords in a browser-based tool?▾
Yes. Our password generator runs entirely in your browser using client-side JavaScript. No passwords are ever transmitted to a server or stored anywhere. The generated passwords exist only in your browser's memory until you close the page. This makes it just as secure as generating passwords locally on your machine.
What types of data can I generate with these tools?▾
Our generator tools cover a wide range of use cases, including strong passwords, UUIDs (v1, v4, and v7), Lorem Ipsum placeholder text, hash values, color palettes, QR codes, and more. These are useful for development, testing, design mockups, and everyday productivity tasks.
Can I generate data in bulk?▾
Several of our generators support bulk generation. For instance, you can generate multiple UUIDs or passwords at once and copy them all with a single click. This is particularly helpful when you need test data for database seeding, batch configuration, or automated testing workflows.